Merge pull request #1778 from bryanthaboi/dev

some fixes
chris (and all gen2) fix
2026-08-25 23:11:15 +02:00 · 2026-08-24 12:38:35 -04:00 · 2026-08-24 12:35:35 -04:00 · 2026-08-24 12:10:15 -04:00 · 2026-08-24 11:46:51 -04:00 · 2026-08-24 11:36:23 -04:00
1854 changed files with 398106 additions and 152607 deletions
@@ -0,0 +1 @@
+* @bryanthaboi
@@ -5,6 +5,10 @@ body:
  - type: markdown
    attributes:
      value: |
+        **Turn off all mods before filing.** Disable everything in the launcher's MODS
+        tab, confirm the bug still happens, then open this. Bugs that only show up with
+        mods on belong with the mod author, not here.
+
        A screenshot is worth more than any description. If you can grab one, grab one.
        If you genuinely can't, that's fine, but then the details below need to be thorough
        enough that someone can find the bug without ever seeing your screen.
@@ -51,22 +55,24 @@ body:
    validations:
      required: true

-  - type: dropdown
-    id: mods_enabled
+  - type: checkboxes
+    id: mods_off
    attributes:
-      label: Were any mods on
-      description: Check the MODS tab in the launcher if you're not sure.
+      label: Mods off
+      description: >
+        Turn off every mod in the launcher's MODS tab and reproduce the bug
+        before submitting. Do not file vanilla bugs with mods still enabled.
      options:
-        - "No"
-        - "Yes"
-    validations:
-      required: true
+        - label: I turned off all mods and can still reproduce this
+          required: true

  - type: input
    id: mods_which
    attributes:
-      label: Which mods (if any were on)
-      description: List the enabled mods. Leave blank if none were on.
+      label: Which mods (if you first noticed this with any on)
+      description: >
+        Optional. If you originally hit this with mods enabled, list them —
+        but only after you've confirmed it still happens with all of them off.
      placeholder: nuzlocke 1.0.0, running-shoes 0.3
    validations:
      required: false
@@ -1,118 +0,0 @@
-name: Feature request
-description: Ask for something new in the engine, launcher, or platform — not a content/gameplay mod.
-labels: ["enhancement"]
-body:
-  - type: markdown
-    attributes:
-      value: |
-        Use this for **engine / launcher / platform** work (ports, video options, save
-        tooling, networking, mod API seams, docs).
-
-        If what you want is a gameplay, cosmetic, audio, or QoL change that a Lua mod
-        could ship — running shoes, alternate sprites, day/night, shiny indicators,
-        Gen 2-like battle toggles, soundtrack packs — open a
-        **[Mod request](https://github.com/bryanthaboi/gen1recomp/issues/new?template=mod_request.yml)**
-        instead.
-
-        "Can we add X" on its own is hard to act on. Say what you want, why you want it,
-        and how you picture it working.
-
-  - type: input
-    id: summary
-    attributes:
-      label: One line summary
-      description: What you want, in a sentence.
-      placeholder: Add Linux AppImage releases next to the macOS and Windows builds
-    validations:
-      required: true
-
-  - type: dropdown
-    id: game
-    attributes:
-      label: Which game is this about
-      description: Pick every version it applies to. Use N/A if it isn't game-specific.
-      multiple: true
-      options:
-        - Red
-        - Blue
-        - Yellow
-        - Gold
-        - N/A
-    validations:
-      required: true
-
-  - type: input
-    id: discord
-    attributes:
-      label: Discord username (optional)
-      description: >
-        So maintainers can ping you on Discord if they need a quick follow-up.
-        Leave blank if you'd rather keep everything on GitHub.
-      placeholder: yourname
-    validations:
-      required: false
-
-  - type: textarea
-    id: what
-    attributes:
-      label: What do you want
-      description: >
-        Describe it properly. What is it, where does it live (launcher, options,
-        engine), what does the player see or do. If it changes something that already
-        exists, say what it does today and what it should do instead.
-      placeholder: |
-        Ship a Linux AppImage on each release, same version as the macOS/Windows builds,
-        with the same save folder layout and mod discovery path.
-    validations:
-      required: true
-
-  - type: textarea
-    id: why
-    attributes:
-      label: Why is this worth doing
-      description: >
-        What's annoying or missing right now. What does this fix. If it's just because you
-        think it would be fun, say that, it's a real answer.
-      placeholder: |
-        LÖVE already runs on Linux; without a packaged build, players have to assemble
-        it themselves and miss release notes / update checks.
-    validations:
-      required: true
-
-  - type: textarea
-    id: how
-    attributes:
-      label: How should it work
-      description: >
-        The specifics. Which menu, what happens in the edge cases. If you don't
-        know, say what you'd expect as a player and leave the rest open.
-      placeholder: |
-        - GitHub Releases asset next to the .dmg / .exe
-        - Same options.lua / mods/ layout as desktop
-        - Documented in the README install section
-    validations:
-      required: true
-
-  - type: dropdown
-    id: scope
-    attributes:
-      label: Does this change how the original game plays
-      description: >
-        Some requests are quality of life, some change the actual game. Both are fine,
-        it just helps to know which one you're asking for.
-      options:
-        - Quality of life, original game is untouched
-        - Changes how the game plays
-        - Not sure
-    validations:
-      required: true
-
-  - type: textarea
-    id: extra
-    attributes:
-      label: Anything else
-      description: >
-        Reference screenshots, how another game does it, related issues. Leave blank
-        if nothing comes to mind.
-    validations:
-      required: false
@@ -1,130 +0,0 @@
-name: Mod request
-description: Ask for a gameplay, cosmetic, audio, or QoL change that belongs as a Lua mod.
-labels: ["mod request"]
-body:
-  - type: markdown
-    attributes:
-      value: |
-        This tracker is for ideas that should ship as **mods**, not as core engine
-        features — alternate sprites, running shoes, day/night, shiny indicators,
-        soundtrack packs, Gen 2-like battle toggles, map cosmetics, bag QoL, etc.
-
-        The engine already exposes a lot of this through registries and hooks
-        ([modding wiki](https://github.com/bryanthaboi/gen1recomp/wiki)).
-        Use a **Feature request** instead for launcher / ports / video options /
-        networking / save tooling / new API seams.
-
-  - type: input
-    id: summary
-    attributes:
-      label: One line summary
-      description: What the mod should do, in a sentence.
-      placeholder: Hold B to run at bike speed on the overworld
-    validations:
-      required: true
-
-  - type: dropdown
-    id: game
-    attributes:
-      label: Which game is this for
-      description: Pick every version the mod should cover. Use N/A if it isn't game-specific.
-      multiple: true
-      options:
-        - Red
-        - Blue
-        - Yellow
-        - Gold
-        - N/A
-    validations:
-      required: true
-
-  - type: input
-    id: discord
-    attributes:
-      label: Discord username (optional)
-      description: >
-        So maintainers or mod authors can ping you on Discord if they pick this up.
-        Leave blank if you'd rather keep everything on GitHub.
-      placeholder: yourname
-    validations:
-      required: false
-
-  - type: textarea
-    id: what
-    attributes:
-      label: What should the mod do
-      description: >
-        Describe the player-facing behavior. What changes, where, what does the
-        player see or press. If it toggles from Options or a START-menu entry, say so.
-      placeholder: |
-        Hold B while walking outdoors to move at bike speed. Release to walk again.
-        Same places the bike is allowed; no effect in battles or menus.
-    validations:
-      required: true
-
-  - type: textarea
-    id: why
-    attributes:
-      label: Why is this worth doing as a mod
-      description: >
-        Why optional/modded rather than a core option. Who wants it on, who wants
-        vanilla left alone.
-      placeholder: |
-        Great for replaying and backtracking, but some people want a strict Gen 1
-        pace. A mod (or an opt-in mod option) keeps both camps happy.
-    validations:
-      required: true
-
-  - type: textarea
-    id: how
-    attributes:
-      label: How should it work
-      description: >
-        Buttons, menus, edge cases, whether it needs new art/audio. If you know a
-        hook or registry that fits (movement.speed, pokemon.sprite, rulesets, …),
-        mention it — otherwise leave it open.
-      placeholder: |
-        - Hold B on the overworld
-        - Same step timing as the bike
-        - Disabled where the bike is disabled
-        - Prefer hooks:wrap("movement.speed") if that still fits
-    validations:
-      required: true
-
-  - type: dropdown
-    id: vanilla
-    attributes:
-      label: With the mod off, is vanilla unchanged
-      options:
-        - Yes — parity when disabled
-        - No — it would replace something always-on
-        - Not sure
-    validations:
-      required: true
-
-  - type: dropdown
-    id: category
-    attributes:
-      label: Best-fit mod category
-      description: Same taxonomy as example mods (BALANCE, GRAPHICS, AUDIO, …).
-      options:
-        - GAMEPLAY / QoL
-        - GRAPHICS
-        - AUDIO
-        - BALANCE / ruleset
-        - CONTENT (maps, encounters, trainers)
-        - UI / TOOL
-        - TOTAL_CONVERSION-ish
-        - Not sure
-    validations:
-      required: true
-
-  - type: textarea
-    id: extra
-    attributes:
-      label: Anything else
-      description: >
-        Reference screenshots, other games/hacks that do it, related issues, or
-        "I'd like to try writing this myself." Leave blank if nothing comes to mind.
-    validations:
-      required: false
@@ -12,10 +12,11 @@ name: ci
 #
 on:
  push:
-    # Integration branch + release branch. PRs already run via pull_request
-    # (any base); this list is only for post-merge push runs.
    branches: [dev, main]
+  # PRs into dev only: a dev -> main ship PR reuses the required checks the
+  # dev push already put on the same head SHA, so it needs no second run.
  pull_request:
+    branches: [dev]

 # a force-push while CI is mid-run should cancel the stale run, not queue
 concurrency:
@@ -318,52 +319,10 @@ jobs:
        run: |
          set -euo pipefail
          scripts/build_linux_arm64.sh --version 0.0.0
+      # Shared with the release workflow so shipped images get the same
+      # self-contained / glibc-floor checks as PR builds.
      - name: Verify the AppImage is self-contained and bullseye-compatible
-        run: |
-          set -euo pipefail
-          image="dist/linux-arm64/gen1recomp-0.0.0-linux-arm64.AppImage"
-
-          # --appimage-extract needs no FUSE, so this works on a runner
-          # without /dev/fuse and still exercises the real payload.
-          "$image" --appimage-extract >/dev/null
-          for required in AppRun bin/love game.love lib/liblove-11.5.so; do
-            [ -e "squashfs-root/$required" ] \
-              || { echo "::error::AppImage is missing $required"; exit 1; }
-          done
-
-          # Every bundled object must resolve once AppRun's LD_LIBRARY_PATH is
-          # applied; an unresolved soname here is a user-visible launch crash.
-          #
-          # This runs on a HEADLESS runner on purpose, and that is the point.
-          # The first version of this build bundled Debian's SDL2, which
-          # hard-links libpulse/libasound/libX11/libwayland, so it only ever
-          # started on a full desktop -- a bare runner is what exposed it.
-          missing="$(LD_LIBRARY_PATH="$PWD/squashfs-root/lib" \
-            ldd squashfs-root/bin/love squashfs-root/lib/*.so* 2>/dev/null \
-            | grep 'not found' || true)"
-          [ -z "$missing" ] || { echo "::error::unresolved deps:"; echo "$missing"; exit 1; }
-
-          # Nothing may hard-link a driver, session or audio-stack library:
-          # those must be reached through dlopen so the AppImage runs on a box
-          # with only ALSA, only Wayland, or only KMSDRM.
-          linked="$(for f in squashfs-root/bin/love squashfs-root/lib/*.so*; do
-            objdump -p "$f" 2>/dev/null | awk '/NEEDED/{print $2}'
-          done | sort -u | grep -E '^lib(pulse|asound|X11|wayland|GL|EGL|drm|gbm|xcb|cairo|sndio|dbus)' || true)"
-          [ -z "$linked" ] \
-            || { echo "::error::these must be dlopened, not linked:"; echo "$linked"; exit 1; }
-
-          # The whole point of compiling on bullseye. If a future change moves
-          # the builder to a newer base, the glibc floor silently rises and
-          # every user on an older distro gets "GLIBC_2.xx not found" -- catch
-          # it here instead of in a release.
-          floor="$(objdump -T squashfs-root/bin/love squashfs-root/lib/*.so* 2>/dev/null \
-            | grep -o 'GLIBC_[0-9.]*' | sort -V | tail -1)"
-          echo "highest required glibc symbol version: $floor"
-          [ -n "$floor" ] \
-            || { echo "::error::found no versioned glibc symbols -- objdump read nothing"; exit 1; }
-          highest="$(printf '%s\n' "$floor" "GLIBC_2.31" | sort -V | tail -1)"
-          [ "$highest" = "GLIBC_2.31" ] \
-            || { echo "::error::AppImage requires $floor, above the bullseye 2.31 floor"; exit 1; }
+        run: bash scripts/linux-arm64/verify_appimage.sh dist/linux-arm64/gen1recomp-0.0.0-linux-arm64.AppImage
      - name: Upload the AppImage
        uses: actions/upload-artifact@v7
        with:
@@ -400,7 +359,6 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7
-      - run: sudo apt-get update && sudo apt-get install -y luajit
      - run: python3 -m pip install --upgrade pillow

      # the fixture PNGs are committed (they are 8x8 placeholders, not
@@ -421,13 +379,8 @@ jobs:
          print(f"\n{len(paths)} fixture assets valid")
          PY

-      # the fingerprint golden is the parity tripwire; prove it still
-      # matches the dataset on a clean checkout
-      - name: fingerprint gate
-        run: luajit tests/engine/gate_fingerprint.lua
-
-      - name: parity-guarantee meta-test
-        run: luajit tests/engine/gate_meta_coverage.lua
+      # the fingerprint parity gates (gate_fingerprint / gate_meta_coverage)
+      # run in the headless job via run_engine; this job only guards the PNGs

  # Only the differ is under test here, and the job is named for that.  The
  # capture half of the golden pipeline does not exist: a POKEPORT_DRIVER
@@ -515,3 +468,24 @@ jobs:
          if [ "$found" = "0" ]; then
            echo "no committed mods to lint"
          fi
+
+  luacheck:
+    name: engine lint (luacheck)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+
+      - name: install luacheck
+        run: |
+          set -e
+          sudo apt-get update
+          sudo apt-get install -y lua5.4 liblua5.4-dev luarocks
+          sudo luarocks install luacheck || sudo apt-get install -y lua-check
+          luacheck --version
+
+      - name: luacheck gate (undefined globals, unreachable code)
+        run: ./scripts/lint.sh --gate
+
+      - name: luacheck full report (advisory)
+        continue-on-error: true
+        run: ./scripts/lint.sh
@@ -161,6 +161,8 @@ jobs:
          scripts/build_linux_arm64.sh \
            --version "${{ needs.version.outputs.version }}" \
            --game-love .bazinga/work/game.love
+      - name: Verify the AppImage is self-contained and bullseye-compatible
+        run: bash scripts/linux-arm64/verify_appimage.sh "dist/linux-arm64/gen1recomp-${{ needs.version.outputs.version }}-linux-arm64.AppImage"
      - name: Upload Linux arm64 release
        uses: actions/upload-artifact@v7
        with:
@@ -285,7 +287,7 @@ jobs:
          retention-days: 1

  release:
-    needs: [version, xbox-uwp, linux-arm64, native-tls-win]
+    needs: [version, love-payload, xbox-uwp, linux-arm64, native-tls-win]
    runs-on: ${{ fromJSON(github.repository == 'bryanthaboi/gen1recomp' && '["self-hosted", "macOS"]' || '"macos-latest"') }}

    steps:
@@ -307,6 +309,15 @@ jobs:
          name: gen1tls-win-x64
          path: dist/native/win-x64

+      # The same game.love the arm64 AppImage and Xbox UWP builds fused, so
+      # every release asset ships one identical payload (build.sh's own pack
+      # would omit PATCH_NOTES.md and mobile/ios/app-repo.json).
+      - name: Download shared payload
+        uses: actions/download-artifact@v8
+        with:
+          name: gen1recomp-release-love
+          path: dist/payload
+
      - name: Import signing certificate into a temporary keychain
        if: github.repository == 'bryanthaboi/gen1recomp'
        run: |
@@ -357,14 +368,36 @@ jobs:
            echo "::error::gen1tls.dll missing at $GEN1TLS_DLL (native-tls-win job)"
            exit 1
          fi
-          scripts/build.sh all --version "${{ needs.version.outputs.version }}" --no-notarize
+          scripts/build.sh all --version "${{ needs.version.outputs.version }}" --no-notarize \
+            --game-love dist/payload/game.love
          unzip -l dist/win/gen1recomp-win64.zip | grep -F gen1tls.dll \
            || { echo "::error::Windows zip is missing gen1tls.dll"; exit 1; }

-      - name: Build Android
+      - name: Materialize Android release signing key
+        env:
+          KEYSTORE_B64: ${{ secrets.ANDROID_RELEASE_KEYSTORE_B64 }}
        run: |
          set -euo pipefail
-          scripts/build_android.sh --version "${{ needs.version.outputs.version }}"
+          [ -n "$KEYSTORE_B64" ] || {
+            echo "::error::ANDROID_RELEASE_KEYSTORE_B64 is required for a publishable Android update"
+            exit 1
+          }
+          python3 - <<'PY'
+          import base64, os, pathlib
+          encoded = os.environ["KEYSTORE_B64"]
+          path = pathlib.Path(os.environ["RUNNER_TEMP"]) / "gen1recomp-android-release.keystore"
+          path.write_bytes(base64.b64decode(encoded, validate=True))
+          PY
+
+      - name: Build Android
+        env:
+          GEN1RECOMP_ANDROID_KEYSTORE: ${{ runner.temp }}/gen1recomp-android-release.keystore
+          GEN1RECOMP_ANDROID_KEYSTORE_PASSWORD: ${{ secrets.ANDROID_RELEASE_KEYSTORE_PASSWORD }}
+          GEN1RECOMP_ANDROID_KEY_ALIAS: ${{ secrets.ANDROID_RELEASE_KEY_ALIAS }}
+          GEN1RECOMP_ANDROID_KEY_PASSWORD: ${{ secrets.ANDROID_RELEASE_KEY_PASSWORD }}
+        run: |
+          set -euo pipefail
+          scripts/build_android.sh --release --version "${{ needs.version.outputs.version }}"

      - name: Install xcbeautify
        run: |
@@ -486,8 +519,8 @@ jobs:
          [ -f "$arm64_appimage" ] || { echo "::error::$arm64_appimage not found (expected from the linux-arm64 job)"; exit 1; }
          cp "$arm64_appimage" "$outdir/gen1recomp-${v}-linux-arm64.AppImage"
          chmod +x "$outdir/gen1recomp-${v}-linux-arm64.AppImage"
-          apk="$(find dist/android/debug -name '*.apk' | head -1)"
-          [ -n "$apk" ] || { echo "::error::no Android APK found under dist/android/debug"; exit 1; }
+          apk="$(find dist/android/release -name '*.apk' | head -1)"
+          [ -n "$apk" ] || { echo "::error::no Android APK found under dist/android/release"; exit 1; }
          cp "$apk" "$outdir/gen1recomp-${v}-android.apk"

          ipa="dist/ios/gen1recomp++.ipa"
@@ -23,6 +23,10 @@ read_globals = {
  -- LuaJIT 2.1 ships table.unpack even though the bare 5.1 `table` std lacks
  -- it; without this, every `table.unpack` reads as an undefined field.
  table = { fields = { "unpack" } },
+  "POKEPORT_DISPLAY_COMPANION",
+  "POKEPORT_EDITOR_MODE",
+  "rawlen",
+  package = { fields = { "searchers" } },
 }

 -- Vendored/native trees and the test suites have their own conventions.
@@ -30,6 +34,7 @@ exclude_files = {
  "mobile/",
  "tests/",
  "tools/save-editor/",
+  "tools/save_convert/vendor/",
 }

 ignore = {
@@ -140,29 +140,30 @@ ship text.

 ### 4. `games` (and the legacy `gen2compat`)

-Pokemon Gold is Gen 2, and it runs its own battle engine, overworld, script
-VM and save format. The mod API is shared across both generations (same hook
-names, same event names, same registry names) but Gold cannot serve all of it
-yet, so Gen 2 is opt-in. Say which games the mod is for:
+Pokemon Gold, Silver and Crystal are Gen 2, and they run their own battle
+engine, overworld, script VM and save format. The mod API is shared across both
+generations (same hook names, same event names, same registry names) but Gen 2
+cannot serve all of it yet, so it is opt-in. Say which games the mod is for:

 ```json
 "games": ["gen1", "gen2"]
 ```

-Each entry is a version id (`"red"`, `"blue"`, `"yellow"`, `"gold"`), a
-generation (`"gen1"`, `"gen2"`) or `"all"`;
+Each entry is a version id (`"red"`, `"blue"`, `"yellow"`, `"gold"`,
+`"silver"`, `"crystal"`), a generation (`"gen1"`, `"gen2"`) or `"all"`;
 `src/mods/ModTargets.lua` resolves them off `GameVersion.ORDER` so nothing
-restates the game list. `python3 tools/modkit.py scaffold my_mod --games
-gen1,gen2` writes the key for you. The mod still installs to one directory,
-`mods/<id>/`, shared by every game -- targeting is declared, never filed.
+restates the game list, which is why `"gen2"` covers Crystal as well as Gold
+and Silver. `python3 tools/modkit.py scaffold my_mod --games gen1,gen2` writes
+the key for you. The mod still installs to one directory, `mods/<id>/`, shared
+by every game -- targeting is declared, never filed.

 Absent means Gen 1 only, which is what every mod written before the key existed
 was tested as. `"gen2compat": true` is the legacy spelling, still accepted and
 purely additive (it *adds* the Gen 2 games), so no manifest can lose a game it
-already ran on. On a Gold boot a mod claiming no Gen 2 game is not loaded at
+already ran on. On a Gen 2 boot a mod claiming no Gen 2 game is not loaded at
 all: the manager lists it as `ENABLED (NOT THIS GAME)` and says why, because a
 mod that half-applies reads as a broken mod. Claim Gen 2 once you have actually
-run your mod on Gold.
+run your mod on Gold, Silver or Crystal.

 Every token is enforced, per game: the loader gates on the same
 `ModTargets.supports` answer both mod surfaces draw, so `"games": ["blue"]`
@@ -172,10 +173,11 @@ manifest with neither key still covers every Gen 1 game, so nothing written
 before the key existed changes behavior; list both generations or say `"all"`
 when you mean everywhere.

-`docs/mod-api-gen2-compat.md` is the compatibility matrix: what works on Gold
-today (40 of the 46 registries, 40 event and 43 hook names shared with Gen 1,
-and 24 Gen 2-only ones), which registries have no Gen 2 home and drop their
-writes with a report, and which hooks and events are still to come.
+`docs/mod-api-gen2-compat.md` is the compatibility matrix: what works on Gold,
+Silver and Crystal today (40 of the 46 registries, 40 event and 44 hook names
+shared with Gen 1, and 24 Gen 2-only ones), which registries have no Gen 2 home
+and drop their writes with a report, and which hooks and events are still to
+come.
 `docs/preparing-your-mod-for-gen2.md` is the step-by-step migration guide for a
 Gen 1 mod, and it is the one to start from.

@@ -53,18 +53,19 @@ And before you say, "that's not a recomp", you're wrong. Recomp is an acronym. *

 ### Watch the latest update video

-[![Watch the latest update video](https://img.youtube.com/vi/8IOgqbe4YvA/maxresdefault.jpg)](https://www.youtube.com/watch?v=8IOgqbe4YvA)
-
+[![Watch the latest update video](https://img.youtube.com/vi/yi7LkWQPKKM/maxresdefault.jpg)](https://youtu.be/yi7LkWQPKKM)

 This project does not include a ROM, emulate the Game Boy, transpile assembly,
-or download a disassembly. A canonical US Poke Red, Blue, Yellow, or Gold ROM
-is the only game content input.
+or download a disassembly. A canonical US Poke Red, Blue, Yellow, Gold,
+Silver, or Crystal ROM is the only game content input.

 The ROM is verified, used during import, and then released from memory. It is
 not copied into the cache. Later launches load the private generated cache and
-do not ask for the ROM again. Red, Blue, Yellow, and Gold can all be imported
-side by side. Gold is Gen 2 Phase 1 (import + launcher; see
-`docs/gold-phase1.md`): the Gen 2 engine is still under construction.
+do not ask for the ROM again. Red, Blue, Yellow, Gold, Silver, and Crystal can
+all be imported side by side. Gold, Silver, and Crystal are Gen 2 Phase 1
+(import + launcher; see `docs/gold-phase1.md`): the Gen 2 engine is still under
+construction, and Crystal is the newest of the three, so the launcher lists it
+as Crystal (Beta).

 ## Quick Start

@@ -72,13 +73,17 @@ Open the desktop app. On first boot, choose your legally obtained `.gb` /
 `.gbc` file or drop it onto the window. Import takes a few seconds and the
 game starts automatically.

-Only the canonical US Red, Blue, Yellow (1 MiB), and Gold (2 MiB) ROMs are
-accepted. The importer verifies SHA-1 before creating any game data:
+Only the canonical US Red, Blue, Yellow (1 MiB), Gold, Silver, and Crystal
+(2 MiB) ROMs are accepted. The importer verifies SHA-1 before creating any
+game data:

 - Red: `ea9bcae617fdf159b045185467ae58b2e4a48b9a`
 - Blue: `d7037c83e1ae5b39bde3c30787637ba1d4c48ce2`
 - Yellow: `cc7d03262ebfaf2f06772c1a480c7d9d5f4a38e1`
 - Gold: `d8b8a3600a465308c9953dfa04f0081c05bdcb94`
+- Silver: `49b163f7e57702bc939d642a18f591de55d92dae`
+- Crystal (1.0): `f4cd194bdee0d04ca4eac29e09b8e4e9d818c133`
+- Crystal (1.1): `f2f52230b536214ef7c9924f483392993e226cfb`

 The packaged app contains neither a ROM nor pre-extracted game data. Music,
 sound effects, and cries are synthesized while the game runs from compact
@@ -122,24 +127,23 @@ supported out of the box.
 | `2`       | Cycle COLORS                                         |
 | `3`       | Cycle TILT (free-roam overworld)                     |
 | `4`       | Cycle ZOOM through every level (free-roam overworld) |
-| `5`       | Cycle GBC FX                                         |
 | `F1`      | Save                                                 |
 | `F2`      | Load                                                 |
 | `F10`     | Open / close the mod manager                         |


-COLORS, TILT, ZOOM, GBC FX, GAME SPEED, and VOID FILL are also in the
+COLORS, TILT, ZOOM, SHADER FX, GAME SPEED, and VOID FILL are also in the
 Options menu and persist in `options.lua`.

 ### Low-end devices

 **OPTIONS → PERFORMANCE** scales the port's optional extras for weaker
-hardware: **HIGH** (everything on), **BALANCED** (no 3D tilt or GBC FX),
+hardware: **HIGH** (everything on), **BALANCED** (no 3D tilt),
 **LOW** (also no survey zoom, FPS capped), or **AUTO** — the default, which
 picks a tier from your device (ARM handhelds → LOW, phones → BALANCED,
 normal desktops → HIGH, unchanged). It only scales presentation; the
 fixed-step game logic is identical on every tier, and a lower tier hides
-your tilt/zoom/GBC-FX preferences without forgetting them. Details in
+your tilt/zoom preferences without forgetting them. Details in
 [docs/new-features.md](docs/new-features.md#performance-tier-low-end-devices).

 ### Rulesets
@@ -219,7 +223,7 @@ entry: a desktop shortcut per game, a Steam entry, or a handheld frontend.

 | Option | Effect |
 | --- | --- |
-| `--game=red` | boot Red, skipping the launcher (`blue` and `yellow` too, or just `r` / `b` / `y`) |
+| `--game=red` | boot Red, skipping the launcher (`blue`, `yellow`, `gold`, `silver` and `crystal` too, or just `r` / `b` / `y` / `g` / `s` / `c`) |
 | `--slot=2` | load that save slot; takes a slot number or a slot id |
 | `--launcher` | open the launcher anyway, so you can edit a shortcut you already made |

@@ -332,7 +336,7 @@ Maps can be edited in our own build of [Tiled](https://www.mapeditor.org),
 and exported back out as a mod; see
 [docs/tiled-map-editing.md](docs/tiled-map-editing.md).

-## Bugs and Ideas
+## Bugs

 Found a bug? A warp dropping you somewhere it shouldn't, a battle doing math
 that looks wrong, text in the wrong box, anything that does not match the
@@ -341,12 +345,6 @@ original game.
 Attach a screenshot if you can. It saves a lot of back and forth, and if you
 can't get one, the form asks you to describe what you saw instead.

-Thought of a feature that could be good, or a way to improve one that already
-exists?
-[Open a feature request](https://github.com/bryanthaboi/gen1recomp/issues/new?template=feature_request.yml).
-Say what you want, why it is worth doing, and how you picture it working. A
-request with real detail is one that can actually get built.
-
 ## More

 - [Link play](https://github.com/bryanthaboi/gen1recomp/wiki/Guide-Link-Play)
@@ -133,6 +133,8 @@ mkdir -p "$GAME_SRC"
 (cd "$SOURCE_DIR" && zip -q -9 -r "$WORK/game-payload.zip" \
  main.lua conf.lua src libs data assets tools/save-editor \
  tools/rom_manifest.json tools/rom_manifest_blue.json \
+  tools/rom_manifest_yellow.json tools/rom_manifest_gold.json \
+  tools/rom_manifest_silver.json tools/rom_manifest_crystal.json \
  -x '*.DS_Store' 'data/generated/*' 'assets/generated/*')
 if unzip -Z1 "$WORK/game-payload.zip" \
    | grep -Eq '^(data|assets)/generated/[^/]+|^(data|assets)/generated/.+/'; then
@@ -92,6 +92,7 @@ mkdir -p "$GAME_SRC"
  main.lua conf.lua src libs data assets tools/save-editor \
  tools/rom_manifest.json tools/rom_manifest_blue.json \
  tools/rom_manifest_yellow.json tools/rom_manifest_gold.json \
+  tools/rom_manifest_silver.json tools/rom_manifest_crystal.json \
  -x '*.DS_Store' 'data/generated/*' 'assets/generated/*')
 payload_list="$(unzip -Z1 "$WORK/game-payload.zip")"
 printf '%s\n' "$payload_list" \
@@ -99,6 +100,10 @@ printf '%s\n' "$payload_list" \
  && fail "payload unexpectedly contains generated ROM data"
 printf '%s\n' "$payload_list" | grep -qxF "tools/rom_manifest_gold.json" \
  || fail "payload is missing tools/rom_manifest_gold.json"
+printf '%s\n' "$payload_list" | grep -qxF "tools/rom_manifest_silver.json" \
+  || fail "payload is missing tools/rom_manifest_silver.json"
+printf '%s\n' "$payload_list" | grep -qxF "tools/rom_manifest_crystal.json" \
+  || fail "payload is missing tools/rom_manifest_crystal.json"
 unzip -q "$WORK/game-payload.zip" -d "$GAME_SRC"
 rm -f "$WORK/game-payload.zip"

@@ -193,6 +198,26 @@ get_controls
 [ -f "${controlfolder}/mod_${CFW_NAME}.txt" ] && source "${controlfolder}/mod_${CFW_NAME}.txt"

 GAMEDIR="$SHDIR/gen1recomp"
+# Anbernic stock keeps the launcher and the game folder side by side, so the
+# SHDIR-relative path above is correct there and is tried first.
+#
+# Other firmwares (muOS, and PortMaster's layout on several devices) keep
+# launcher scripts and port data in SEPARATE trees -- scripts under roms/ports,
+# data under ports -- so the sibling folder holds no game.
+#
+# Probe for the BINARY, not the directory: on a split layout this script has
+# usually already created "$SHDIR/gen1recomp/conf" and log.txt on an earlier
+# failed run (see mkdir/tee below), so an existence test matches a decoy of our
+# own making. Stock is unaffected -- its sibling holds the real binary and wins
+# on the first test.
+if [ ! -f "$GAMEDIR/bin/love.aarch64" ]; then
+  for candidate in "/$directory/ports/gen1recomp" \
+                   "/mnt/sdcard/ports/gen1recomp" \
+                   "/mnt/mmc/ports/gen1recomp" \
+                   "/roms/ports/gen1recomp"; do
+    if [ -f "$candidate/bin/love.aarch64" ]; then GAMEDIR="$candidate"; break; fi
+  done
+fi
 CONFDIR="$GAMEDIR/conf"
 mkdir -p "$CONFDIR"

@@ -205,11 +230,6 @@ export LD_LIBRARY_PATH="$GAMEDIR/libs.aarch64:${LD_LIBRARY_PATH:-}"
 export SDL_GAMECONTROLLERCONFIG="${sdl_controllerconfig:-}"
 # Mali / H700: prefer GLES where available
 export LOVE_GRAPHICS_USE_OPENGLES="${LOVE_GRAPHICS_USE_OPENGLES:-1}"
-# Same GPU class as a phone, but getOS() here says "Linux", so the Android
-# gate (issue #136) would not fire on its own: refuse GBC FX explicitly.
-# Hides the OPTIONS row, pins the level to OFF, and heals a level already
-# persisted in options.lua.
-export POKEPORT_GBCFX="${POKEPORT_GBCFX:-0}"

 $ESUDO chmod a+x ./bin/love.aarch64 2>/dev/null || chmod a+x ./bin/love.aarch64
 $ESUDO chmod 666 /dev/uinput 2>/dev/null || true
@@ -300,13 +320,6 @@ Native LÖVE 11.5 port of gen1recomp for Anbernic RG34XXSP on

 In-game controls use the normal PortMaster / SDL pad map (rebind under OPTIONS → CONTROLS).

-### Display options
-
-GBC FX is disabled on this device (the H700's Mali GPU compiles that present
-pass and then shows a black frame), so the OPTIONS row is hidden. COLORS,
-TILT, ZOOM, VOID FILL and MAX FPS all work. To try it anyway, launch with
-`POKEPORT_GBCFX=1`.
-
 ### First run

 Stock OS has no zenity file picker. Put the `.gb` in `lovegame/`, then press
@@ -66,6 +66,12 @@ function love.conf(t)
  t.modules.audio = not companion
  t.modules.joystick = not companion
  t.modules.physics = false
+  -- love.sensor exposes raw accelerometer/gyroscope data (love.sensor.getData),
+  -- independent of t.accelerometerjoystick below (which instead maps the
+  -- accelerometer onto joystick axes and stays off -- see that flag's
+  -- comment for why). Explicit here so a future effect (e.g. a tilt-driven
+  -- reflective-screen look) has sensor data available without reviving #468.
+  t.modules.sensor = true

  -- love.system is not loaded during love.conf; love._os is set by the
  -- engine before conf runs (LÖVE 11.x / 11.5).
@@ -25,8 +25,10 @@
 local Menu = require("src.ui.Menu")
 local TextBox = require("src.render.TextBox")

-- TMNotebookText (data/text/text_2.asm) has no leading underscore, so the
-- extractor never collects it and the pamphlet's text is inlined.
+-- TMNotebookText (data/text/text_2.asm) has no leading underscore, but the
+-- extractor now collects any top-level label in a dedicated text file
+-- regardless (tools/extract/text.py), so this is the real ROM label --
+-- the literal below is only the fallback for a catalog without it.
 local TM_NOTEBOOK_TEXT = "It's a pamphlet\non TMs.\f...\f"
  .. "There are 50 TMs\nin all.\f"
  .. "There are also 5\nHMs that can be\vused repeatedly.\f"
@@ -70,7 +72,8 @@ return {
      return true
    end
    if fx == 3 and fy == 4 then
-      game.stack:push(TextBox.new(game, TM_NOTEBOOK_TEXT))
+      local text = game.data.text or {}
+      game.stack:push(TextBox.new(game, text.TMNotebookText or TM_NOTEBOOK_TEXT))
      return true
    end
    return false
@@ -5,8 +5,27 @@
 -- voucher exchange and the BICYCLE/CANCEL price window need more than
 -- command rows (#568).

+local TextBox = require("src.render.TextBox")
+
+-- data/events/hidden_events.asm:542
+local BIKE_DISPLAYS = {
+  { 1, 0 }, { 2, 1 }, { 1, 2 }, { 3, 2 }, { 0, 4 }, { 1, 5 },
+}
+
 return {
  BIKE_SHOP = {
+    -- engine/events/hidden_events/new_bike.asm:1
+    onInteract = function(game, ow, fx, fy)
+      for _, c in ipairs(BIKE_DISPLAYS) do
+        if c[1] == fx and c[2] == fy then
+          game.stack:push(TextBox.new(game,
+            (game.data.text or {})._NewBicycleText or "A shiny new\nBICYCLE!"))
+          return true
+        end
+      end
+      return false
+    end,
+
    talk = {
      -- BikeShopMiddleAgedWomanText (pokered/scripts/BikeShop.asm):
      -- always shows the same flavor line, no branching.
@@ -36,19 +36,29 @@ M.POKEMON_FAN_CLUB = {
      { "clear_flag", "EVENT_SEEL_FAN_BOAST" },                       -- 8
    },

-    -- PokemonFanClubPikachuText (scripts/PokemonFanClub.asm): the
-    -- PIKACHU itself, just a flavor line (its cry isn't playable in the
-    -- port's talk pipeline, so it's dropped like other cry-only lines).
+    -- PokemonFanClubPikachuText (scripts/PokemonFanClub.asm:71): PrintText,
+    -- then ld a, PIKACHU / call PlayCry (:76) / call WaitForSoundToFinish.
    TEXT_POKEMONFANCLUB_PIKACHU = {
-      { "show_text", "_PokemonFanClubPikachuText" },
+      { "play_cry", "PIKACHU", true },                                -- 1 PlayCry (#1649)
+      { "show_text", "_PokemonFanClubPikachuText" },                  -- 2 PrintText
    },

-    -- PokemonFanClubSeelText (scripts/PokemonFanClub.asm): the SEEL
-    -- itself, flavor line only.
+    -- PokemonFanClubSeelText (scripts/PokemonFanClub.asm:84): the same
+    -- shape with SEEL, PlayCry at :89.
    TEXT_POKEMONFANCLUB_SEEL = {
-      { "show_text", "_PokemonFanClubSeelText" },
+      { "play_cry", "SEEL", true },                                   -- 1 PlayCry (#1649)
+      { "show_text", "_PokemonFanClubSeelText" },                     -- 2 PrintText
    },
  },
 }

+-- pokeyellow/scripts/PokemonFanClub.asm:149 PokemonFanClubClefairyText: Yellow's
+-- pet is a CLEFAIRY on its own TEXT_POKEMONFANCLUB_CLEFAIRY, PlayCry at :154.
+if require("src.core.GameVersion").isYellow() then
+  M.POKEMON_FAN_CLUB.talk.TEXT_POKEMONFANCLUB_CLEFAIRY = {
+    { "play_cry", "CLEFAIRY", true },                                 -- 1 PlayCry
+    { "show_text", "_PokemonFanClubClefairyText" },                   -- 2 PrintText
+  }
+end
+
 return M
@@ -1,10 +1,11 @@
-- pokered/scripts/SSAnne1FRooms.asm: SSAnne1FRoomsWigglytuffText
-- text_far _SSAnne1FRoomsWigglytuffText; then ld a, WIGGLYTUFF / call PlayCry (cosmetic cry sound, not ported)
+-- pokered/scripts/SSAnne1FRooms.asm:66 SSAnne1FRoomsWigglytuffText
+-- text_far _SSAnne1FRoomsWigglytuffText, then ld a, WIGGLYTUFF / call PlayCry (:70)
 return {
  SS_ANNE_1F_ROOMS = {
    talk = {
      TEXT_SSANNE1FROOMS_WIGGLYTUFF = {
        {"face_player"},
+        {"play_cry", "WIGGLYTUFF", true},               -- 1 PlayCry (#1687)
        {"show_text", "_SSAnne1FRoomsWigglytuffText"},
      },
    },
@@ -1,12 +1,11 @@
-- pokered/scripts/SSAnneB1FRooms.asm: SSAnneB1FRoomsMachokeText
-- text_far _SSAnneB1FRoomsMachokeText, then `ld a, MACHOKE / call PlayCry`
-- (cry playback has no equivalent Commands.lua verb in this port, so only
-- the flavor text is ported).
+-- pokered/scripts/SSAnneB1FRooms.asm:82 SSAnneB1FRoomsMachokeText
+-- text_far _SSAnneB1FRoomsMachokeText, then ld a, MACHOKE / call PlayCry (:86)
 return {
    SS_ANNE_B1F_ROOMS = {
        talk = {
            TEXT_SSANNEB1FROOMS_MACHOKE = {
                { "face_player" },
+                { "play_cry", "MACHOKE", true },          -- 1 PlayCry (#1687)
                { "show_text", "_SSAnneB1FRoomsMachokeText" },
            },
        },
@@ -15,10 +15,10 @@ return {
      -- pick the dish: bit 7 set (~50%) -> Salmon du Salad, else bit 4
      -- set (~25%) -> Eels au Barbecue, else (~25%) -> Prime Beef Steak.
      -- The three dish texts (SSAnneKitchenCook7SalmonDuSaladText /
-      -- ...EelsAuBarbecueText / ...PrimeBeefSteakText) aren't extracted
-      -- into data/generated/text.lua (no leading underscore in
-      -- pokered/text/SSAnneKitchen.asm), so their literal strings are
-      -- ported here verbatim.
+      -- ...EelsAuBarbecueText / ...PrimeBeefSteakText) have no leading
+      -- underscore in pokered/text/SSAnneKitchen.asm, but the extractor
+      -- collects them regardless (tools/extract/text.py); the literals
+      -- below are only the fallback for a catalog without them.
      TEXT_SSANNEKITCHEN_COOK7 = function(game, ow, npc, done)
        local t = game.data.text
        push(game, t._SSAnneKitchenCook7MainCourseIsText
@@ -27,13 +27,16 @@ return {
          local dish
          if roll <= 2 then
            -- bit 7 of hRandomAdd set (~50%)
-            dish = "Salmon du Salad!\fLes guests may\ngripe it's fish\vagain, however!"
+            dish = t.SSAnneKitchenCook7SalmonDuSaladText
+              or "Salmon du Salad!\fLes guests may\ngripe it's fish\vagain, however!"
          elseif roll == 3 then
            -- bit 4 set, bit 7 clear (~25%)
-            dish = "Eels au Barbecue!\fLes guests will\nmutiny, I fear."
+            dish = t.SSAnneKitchenCook7EelsAuBarbecueText
+              or "Eels au Barbecue!\fLes guests will\nmutiny, I fear."
          else
            -- neither bit set (~25%)
-            dish = "Prime Beef Steak!\fBut, have I enough\nfillets du beef?"
+            dish = t.SSAnneKitchenCook7PrimeBeefSteakText
+              or "Prime Beef Steak!\fBut, have I enough\nfillets du beef?"
          end
          push(game, dish, done)
        end)
@@ -18,10 +18,11 @@ return {

      -- VermilionCityMachopText: cries out, then follows up with a
      -- second line about stomping the land flat.
-      -- (pokered/scripts/VermilionCity.asm)
+      -- (pokered/scripts/VermilionCity.asm:224, PlayCry at :228)
      TEXT_VERMILIONCITY_MACHOP = {
-        { "show_text", "_VermilionCityMachopText" },                     -- 1
-        { "show_text", "_VermilionCityMachopStompingTheLandFlatText" },  -- 2
+        { "play_cry", "MACHOP", true },                                  -- 1 PlayCry (#1649)
+        { "show_text", "_VermilionCityMachopText" },                     -- 2
+        { "show_text", "_VermilionCityMachopStompingTheLandFlatText" },  -- 3
      },
    },
  },
@@ -1,14 +1,12 @@
-- pokered/scripts/VermilionPidgeyHouse.asm: VermilionPidgeyHousePidgeyText
-- text_far _VermilionPidgeyHousePidgeyText, then text_asm plays the PIDGEY
-- cry (ld a, PIDGEY / call PlayCry / call WaitForSoundToFinish) before
-- TextScriptEnd. This port has no cry-playback command, so only the
-- flavor line is ported.
+-- pokered/scripts/VermilionPidgeyHouse.asm:15 VermilionPidgeyHousePidgeyText
+-- text_far, then ld a, PIDGEY / call PlayCry (:19) / call WaitForSoundToFinish

 return {
  VERMILION_PIDGEY_HOUSE = {
    talk = {
      TEXT_VERMILIONPIDGEYHOUSE_PIDGEY = {
        {"face_player"},
+        {"play_cry", "PIDGEY", true},                    -- 1 PlayCry (#1649)
        {"show_text", "_VermilionPidgeyHousePidgeyText"},
      },
    },
@@ -60,22 +60,23 @@ M.VIRIDIAN_CITY = {
    -- you want to know about the two kinds of caterpillar Pokemon;
    -- YES -> CATERPIE/WEEDLE description, NO -> "Oh, OK then!".
    -- ViridianCityYoungster2OkThenText and
-    -- ViridianCityYoungster2CaterpieAndWeedleDescriptionText are
-    -- defined without a leading underscore in pokered/text/ViridianCity.asm
-    -- and aren't present in data/generated/text.lua, so we fall back to
-    -- the literal strings from pokered.  Those fallbacks have to carry the
-    -- extractor's markers, not plain newlines: line -> \n, cont -> \v,
-    -- para -> \f.  Spelling cont/para as \n and \n\n put all six lines on
-    -- one page with nothing to wait on, so the whole speech scrolled past
-    -- without a button press (#250).
+    -- ViridianCityYoungster2CaterpieAndWeedleDescriptionText are defined
+    -- without a leading underscore in pokered/text/ViridianCity.asm, but
+    -- tools/extract/text.py now collects them regardless -- the literal
+    -- strings below are only the fallback for a catalog without them.
+    -- Those fallbacks have to carry the extractor's markers, not plain
+    -- newlines: line -> \n, cont -> \v, para -> \f.  Spelling cont/para as
+    -- \n and \n\n put all six lines on one page with nothing to wait on,
+    -- so the whole speech scrolled past without a button press (#250).
    TEXT_VIRIDIANCITY_YOUNGSTER2 = function(game, ow, npc, done)
      local t = text(game)
      ask(game, t._ViridianCityYoungster2YouWantToKnowAboutText
        or "You want to know\nabout the 2 kinds\vof caterpillar\vPOKéMON?", function(yes)
        if yes then
-          push(game, "CATERPIE has no\npoison, but\vWEEDLE does.\fWatch out for its\nPOISON STING!", done)
+          push(game, t.ViridianCityYoungster2CaterpieAndWeedleDescriptionText
+            or "CATERPIE has no\npoison, but\vWEEDLE does.\fWatch out for its\nPOISON STING!", done)
        else
-          push(game, "Oh, OK then!", done)
+          push(game, t.ViridianCityYoungster2OkThenText or "Oh, OK then!", done)
        end
      end)
    end,
@@ -38,6 +38,22 @@ local function retryTmGive(game, ow, victoryKey, done)
  return true
 end

+-- The badge line + its jingle, armed for the battle screen the way
+-- SaveEndBattleTextPointers does (PewterGym.asm:117-119) (#1606)
+local function badgeEndBattleText(game, victoryKey)
+  local reward = victoryKey and require("data.scripts.victories")[victoryKey]
+  if not (reward and reward.dialogue) then return nil end
+  local text = game.data.text or {}
+  local pages = {}
+  for _, label in ipairs(reward.dialogue) do
+    if text[label] and text[label] ~= "" then
+      pages[#pages + 1] = text[label]
+    end
+  end
+  if #pages == 0 then return nil end
+  return table.concat(pages, "\f"), reward.badgeSound
+end
+
 -- scripts/PewterGym.asm PewterGymBrockText (text_asm): CheckEvent
 -- EVENT_BEAT_BROCK branches his dialogue.  Before the badge he prints
 -- _PewterGymBrockPreBattleText and engages the leader battle
@@ -58,7 +74,8 @@ M.PEWTER_GYM.talk = {
        game.data.text._PewterGymBrockPostBattleAdviceText
        or "Go to the GYM in\nCERULEAN and test\nyour abilities!", done))
    else
-      ow:engageTrainer(npc, done)
+      local text, sound = badgeEndBattleText(game, "OPP_BROCK#1")
+      ow:engageTrainer(npc, done, text, nil, sound)
    end
  end,
 }
@@ -91,7 +108,8 @@ local function leaderTalk(beatFlag, adviceLabel, fallback, afterAdvice, victoryK
      game.stack:push(TextBox.new(game,
        game.data.text[adviceLabel] or fallback, finish))
    else
-      ow:engageTrainer(npc, done)
+      local text, sound = badgeEndBattleText(game, victoryKey)
+      ow:engageTrainer(npc, done, text, nil, sound)
    end
  end
 end
@@ -168,6 +168,7 @@ return {
      { "jump_if_true", "come_see" },
      { "set_flag", "EVENT_GOT_POKEBALLS_FROM_OAK" },
      { "give_item", "POKE_BALL", 5, false },
+      { "text_sound", "Get_Key_Item" },  -- OaksLab.asm:1060
      { "show_text", "_OaksLabOak1ReceivedPokeballsText" },
      { "show_text", "_OaksLabGivePokeballsExplanationText" },
      { "jump", "end" },
@@ -111,7 +111,7 @@ local function joinPrompt(game, ow, done)
  local t = game.data.text
  local back = function(text)
    game.stack:push(TextBox.new(game, text, function()
-      ow:scriptMove(ow.player, "down", 1, done)
+      ow:scriptMove(ow.player, "down", 1, done, { collide = true })
    end))
  end
  game.stack:push(TextBox.new(game,
@@ -127,7 +127,7 @@ M.VIRIDIAN_CITY = {
    game.stack:push(TextBox.new(game,
      game.data.text._ViridianCityOldManSleepyPrivatePropertyText
      or "You can't go\nthrough here!\fThis is private\nproperty!",
-      function() ow:scriptMove(ow.player, "down", 1) end))
+      function() ow:scriptMove(ow.player, "down", 1, nil, { collide = true }) end))
    return true
  end,
 }
@@ -356,7 +356,7 @@ M.VERMILION_CITY = {
    if shipLeft then
      game.stack:push(TextBox.new(game,
        t._VermilionCitySailor1ShipSetSailText or "The ship set sail.",
-        function() ow:scriptMove(ow.player, "up", 1) end))
+        function() ow:scriptMove(ow.player, "up", 1, nil, { collide = true }) end))
      return true
    end
    -- Walk-past is never facing-right / inFrontOfOrBehindGuardCoords, so
@@ -377,26 +377,39 @@ M.VERMILION_CITY = {
      ask .. "\f"
      .. (t._VermilionCitySailor1YouNeedATicketText
          or "You need a ticket\nto get aboard."),
-      function() ow:scriptMove(ow.player, "up", 1) end))
+      function() ow:scriptMove(ow.player, "up", 1, nil, { collide = true }) end))
    return true
  end,
  talk = {
-    -- the sailor guarding the dock gangway (VermilionCitySailor1Text):
-    -- flashing the ticket just lets you through -- he never hides, and
-    -- once the ship has sailed he only reports it gone
-    TEXT_VERMILIONCITY_SAILOR1 = {
-      { "face_player" },                                             -- 1
-      { "check_flag", "EVENT_SS_ANNE_LEFT" },                        -- 2
-      { "jump_if_true", 11 },                                        -- 3
-      { "show_text", "_VermilionCitySailor1DoYouHaveATicketText" },  -- 4
-      { "check_item", "S_S_TICKET" },                                -- 5
-      { "jump_if_false", 9 },                                        -- 6
-      { "show_text", "_VermilionCitySailor1FlashedTicketText" },     -- 7
-      { "jump", 12 },                                                -- 8
-      { "show_text", "_VermilionCitySailor1YouNeedATicketText" },    -- 9
-      { "jump", 12 },                                                -- 10
-      { "show_text", "_VermilionCitySailor1ShipSetSailText" },       -- 11
-    },
+    -- scripts/VermilionCity.asm:158 (#1651)
+    TEXT_VERMILIONCITY_SAILOR1 = function(game, ow, npc, done)
+      local Flags = require("src.script.Flags")
+      local TextBox = require("src.render.TextBox")
+      local t = game.data.text
+      if Flags.get(game.save, "EVENT_SS_ANNE_LEFT") then
+        game.stack:push(TextBox.new(game,
+          t._VermilionCitySailor1ShipSetSailText or "The ship set sail.",
+          done))
+        return
+      end
+      -- scripts/VermilionCity.asm:195
+      local p = ow and ow.player
+      if not p or p.facing == "right"
+         or (p.cellX == 19 and (p.cellY == 29 or p.cellY == 31)) then
+        game.stack:push(TextBox.new(game,
+          t._VermilionCitySailor1WelcomeToSSAnneText
+            or "Welcome to S.S.\nANNE!", done))
+        return
+      end
+      local ask = t._VermilionCitySailor1DoYouHaveATicketText
+        or "Welcome to S.S.\nANNE!\fExcuse me, do you\nhave a ticket?"
+      local tail = ((game.save.inventory.S_S_TICKET or 0) > 0)
+        and (t._VermilionCitySailor1FlashedTicketText
+             or "{PLAYER} flashed\nthe S.S.TICKET!")
+        or (t._VermilionCitySailor1YouNeedATicketText
+            or "You need a ticket\nto get aboard.")
+      game.stack:push(TextBox.new(game, ask .. "\f" .. tail, done))
+    end,
  },
 }

@@ -405,13 +418,14 @@ M.SS_ANNE_2F = {
    TEXT_SSANNE2F_RIVAL = {
      { "face_player" },                                  -- 1
      { "check_flag", "EVENT_BEAT_SS_ANNE_RIVAL" },       -- 2
-      { "jump_if_true", 9 },                              -- 3
+      { "jump_if_true", 9 },                              -- 3 (beaten: silent)
      { "show_text", "_SSAnne2FRivalText" },              -- 4
-      { "rival_battle", "OPP_RIVAL2", 1 },                -- 5
-      { "jump_if_false", 10 },                            -- 6
-      { "set_flag", "EVENT_BEAT_SS_ANNE_RIVAL" },         -- 7
-      { "show_text", "_SSAnne2FRivalDefeatedText" },      -- 8
-      { "jump", 10 },                                     -- 9 (already beaten: silent)
+      -- SSAnne2FRivalText's text_asm arms SaveEndBattleTextPointers
+      -- (scripts/SSAnne2F.asm:199), so the line prints in battle (#1688)
+      { "save_end_battle_text", "_SSAnne2FRivalDefeatedText" }, -- 5
+      { "rival_battle", "OPP_RIVAL2", 1 },                -- 6
+      { "jump_if_false", 9 },                             -- 7
+      { "set_flag", "EVENT_BEAT_SS_ANNE_RIVAL" },         -- 8
    },
  },
 }
@@ -837,13 +851,14 @@ M.SILPH_CO_11F = {
            -- every Silph rocket leaves off-screen (the street rockets are
            -- handled by M.SAFFRON_CITY.onEnter in story4.lua).  Queued, not
            -- run here: the battle's own callbacks are still unwinding, so
-            -- queueScript starts it on the first idle overworld frame --
-            -- after the end-battle "Arrgh!!" box victories.lua OPP_GIOVANNI#2
-            -- pushes (#722).
+            -- queueScript starts it on the first idle overworld frame (#722).
            if game.save.flags.EVENT_BEAT_SILPH_CO_GIOVANNI then
              ow:queueScript(silphAftermathRows())
            end
-          end, nil, true)
+          end,
+          -- "Arrgh!!" is armed for the battle screen, not the map
+          -- (scripts/SilphCo11F.asm:264-266 SaveEndBattleTextPointers) #1606
+          game.data.text._SilphCo10FGiovanniILostAgainText, true)
        end)
      end))
    return true
@@ -414,7 +414,7 @@ local function saffronGate(guardText, triggers, horizontal)
      game.stack:push(TextBox.new(game,
        t._SaffronGateGuardGeeImThirstyText or "Gee, I'm thirsty\nthough!\nThe road's closed.",
        function()
-          ow:scriptMove(ow.player, back, 1)
+          ow:scriptMove(ow.player, back, 1, nil, { collide = true })
        end))
      return true
    end,
@@ -731,12 +731,35 @@ M.MT_MOON_B2F = {
 local function museumClerk(game, ow, done, onDecline)
  local TextBox = require("src.render.TextBox")
  local t = game.data.text or {}
+  local p = ow and ow.player
+  -- scripts/Museum1F.asm:45 (#1690)
+  if p and ((p.cellY == 4 and p.cellX == 13)
+            or (p.cellY == 3 and p.cellX == 12)) then
+    game.stack:push(TextBox.new(game,
+      t._Museum1FScientist1DoYouKnowWhatAmberIsText
+        or "You can't sneak\nin the back way!\fOh, whatever!\nDo you know what\vAMBER is?",
+      nil, { choice = function(yes)
+        game.stack:push(TextBox.new(game, yes
+          and (t._Museum1FScientist1TheresALabSomewhereText
+               or "There's a lab\nsomewhere trying\vto resurrect\vancient POKéMON\vfrom AMBER.")
+          or (t._Museum1FScientist1AmberIsFossilizedTreeSapText
+              or "AMBER is fossil-\nized tree sap."), done))
+      end }))
+    return
+  end
  if game.save.flags.EVENT_BOUGHT_MUSEUM_TICKET then
    game.stack:push(TextBox.new(game,
      t._Museum1FScientist1TakePlentyOfTimeText
        or "Take your time,\nand enjoy it all!", done))
    return
  end
+  -- scripts/Museum1F.asm:58
+  if p and p.cellY ~= 4 then
+    game.stack:push(TextBox.new(game,
+      t._Museum1FScientist1GoToOtherSideText
+        or "Please go to the\nother side!", done))
+    return
+  end
  -- scripts/Museum1F.asm:72
  local money = function() return game.save.money end
  game.stack:push(TextBox.new(game,
@@ -769,7 +792,7 @@ M.MUSEUM_1F = {
    if y == 4 and (x == 9 or x == 10)
       and not game.save.flags.EVENT_BOUGHT_MUSEUM_TICKET then
      museumClerk(game, ow, nil, function()
-        ow:scriptMove(ow.player, "down", 1)
+        ow:scriptMove(ow.player, "down", 1, nil, { collide = true })
      end)
      return true
    end
@@ -2,6 +2,8 @@
 -- ghost, elevators, the Game Corner coins/prizes, the SS Anne departure
 -- and the Hall of Fame record.  Each cites its pokered source.

+local Runtime = require("src.mods.Runtime")
+
 local M = {}

 -- -------------------------------------------------------------------
@@ -9,20 +11,30 @@ local M = {}
 -- FuchsiaGoodRodHouse.asm, Route12SuperRodHouse.asm)
 -- -------------------------------------------------------------------

-local function rodGiver(askText, receivedText, afterText, rodItem, flag)
-  return {
-    { "face_player" },                -- 1
-    { "check_flag", flag },           -- 2
-    { "jump_if_true", 9 },            -- 3
-    { "ask", askText },               -- 4
-    { "jump_if_false", 10 },          -- 5
+-- refusedText is the .ThatsSoDisappointingText tail on NO; followText is
+-- the second half of the received chain (scripts/VermilionOldRodHouse.asm:45)
+local function rodGiver(askText, receivedText, afterText, rodItem, flag,
+                        refusedText, followText)
+  local rows = {
+    { "face_player" },
+    { "check_flag", flag },
+    { "jump_if_true", "already_got" },
+    { "ask", askText },
+    { "jump_if_false", "refused" },
    -- give-then-print like the three rod-house scripts (GiveItem fills
    -- wStringBuffer; the received texts read OLD/GOOD/SUPER ROD from it)
-    { "give_item", rodItem, 1, false },  -- 6
-    { "show_text", receivedText },       -- 7
-    { "set_flag", flag },             -- 8
-    { "jump", 10 },                   -- 9 is below
+    { "give_item", rodItem, 1, false },
+    { "set_flag", flag },
+    { "show_text", receivedText },
  }
+  if followText then rows[#rows + 1] = { "show_text", followText } end
+  rows[#rows + 1] = { "jump", "end" }
+  rows[#rows + 1] = { "label", "refused" }
+  rows[#rows + 1] = { "show_text", refusedText }
+  rows[#rows + 1] = { "jump", "end" }
+  rows[#rows + 1] = { "label", "already_got" }
+  rows[#rows + 1] = { "show_text", afterText }
+  return rows
 end

 M.VERMILION_OLD_ROD_HOUSE = {
@@ -31,11 +43,11 @@ M.VERMILION_OLD_ROD_HOUSE = {
      "_VermilionOldRodHouseFishingGuruDoYouLikeToFishText",
      "_VermilionOldRodHouseFishingGuruTakeThisText",
      "_VermilionOldRodHouseFishingGuruHowAreTheFishBitingText",
-      "OLD_ROD", "EVENT_GOT_OLD_ROD"),
+      "OLD_ROD", "EVENT_GOT_OLD_ROD",
+      "_VermilionOldRodHouseFishingGuruThatsSoDisappointingText",
+      "_VermilionOldRodHouseFishingGuruFishingIsAWayOfLifeText"),
  },
 }
-M.VERMILION_OLD_ROD_HOUSE.talk.TEXT_VERMILIONOLDRODHOUSE_FISHING_GURU[9] =
-  { "show_text", "_VermilionOldRodHouseFishingGuruHowAreTheFishBitingText" }

 M.FUCHSIA_GOOD_ROD_HOUSE = {
  talk = {
@@ -43,11 +55,10 @@ M.FUCHSIA_GOOD_ROD_HOUSE = {
      "_FuchsiaGoodRodHouseFishingGuruText",
      "_FuchsiaGoodRodHouseFishingGuruReceivedGoodRodText",
      "_FuchsiaGoodRodHouseFishingGuruHowAreTheFishText",
-      "GOOD_ROD", "EVENT_GOT_GOOD_ROD"),
+      "GOOD_ROD", "EVENT_GOT_GOOD_ROD",
+      "_FuchsiaGoodRodHouseFishingGuruThatsSoDisappointingText"),
  },
 }
-M.FUCHSIA_GOOD_ROD_HOUSE.talk.TEXT_FUCHSIAGOODRODHOUSE_FISHING_GURU[9] =
-  { "show_text", "_FuchsiaGoodRodHouseFishingGuruHowAreTheFishText" }

 M.ROUTE_12_SUPER_ROD_HOUSE = {
  talk = {
@@ -55,11 +66,11 @@ M.ROUTE_12_SUPER_ROD_HOUSE = {
      "_Route12SuperRodHouseFishingGuruDoYouLikeToFishText",
      "_Route12SuperRodHouseFishingGuruReceivedSuperRodText",
      "_Route12SuperRodHouseFishingGuruTryFishingText",
-      "SUPER_ROD", "EVENT_GOT_SUPER_ROD"),
+      "SUPER_ROD", "EVENT_GOT_SUPER_ROD",
+      "_Route12SuperRodHouseFishingGuruThatsDisappointingText",
+      "_Route12SuperRodHouseFishingGuruFishingWayOfLifeText"),
  },
 }
-M.ROUTE_12_SUPER_ROD_HOUSE.talk.TEXT_ROUTE12SUPERRODHOUSE_FISHING_GURU[9] =
-  { "show_text", "_Route12SuperRodHouseFishingGuruTryFishingText" }

 -- -------------------------------------------------------------------
 -- Pokemon Tower 5F purified zone (scripts/PokemonTower5F.asm
@@ -176,7 +187,7 @@ M.POKEMON_TOWER_6F = {
          -- .did_not_defeat: one simulated step right, off the trigger,
          -- so fleeing does not leave you standing on a cell that
          -- immediately re-fires.
-          ow:scriptMove(ow.player, "right", 1)
+          ow:scriptMove(ow.player, "right", 1, nil, { collide = true })
        end
        ow:afterBattle(result, battle)
      end
@@ -893,81 +904,65 @@ local DOCK_SHIP_BLOCKS = {
  { bx = 7, by = 2, water = 13 }, { bx = 8, by = 2, water = 13 },
 }

-- her four hull columns bow-to-stern (upper-half / lower-half block ids)
-- and the open-water ids of the rows she sits in
-local DOCK_SHIP_COLUMNS = {
-  { bx = 5, top = 4, bottom = 8 },
-  { bx = 6, top = 5, bottom = 9 },
-  { bx = 7, top = 6, bottom = 10 },
-  { bx = 8, top = 7, bottom = 11 },
-}
-local DOCK_WATER_TOP, DOCK_WATER_BOTTOM = 1, 13
-
 M.VERMILION_DOCK = {
  onEnter = function(game, ow)
    local Flags = require("src.script.Flags")
    local f = game.save.flags
    if Flags.get(game.save, "EVENT_SS_ANNE_LEFT") then
      -- the ship is long gone: erase her right away, and anyone who
-      -- still lands here is sent back out past the guard
+      -- still lands here is sent back out past the guard unless a mod
+      -- explicitly permits this occupied map state.  This hook surrounds
+      -- only the ejection decision; map-script registration and dispatch
+      -- stay unchanged, and the departed ship remains erased.
      for _, b in ipairs(DOCK_SHIP_BLOCKS) do
        ow.map:setBlock(b.bx, b.by, b.water)
      end
      ow.map.renderer:rebuild()
-      local TextBox = require("src.render.TextBox")
-      game.stack:push(TextBox.new(game,
-        game.data.text._VermilionCitySailor1ShipSetSailText
-        or "The ship set sail.", function()
-        ow:startWarpTo("VERMILION_CITY", 18, 29, "up")
-      end))
+      local occupancyAllowed = false
+      if Runtime.wantsHook("map.occupancy_allowed") then
+        local player = ow.player or {}
+        occupancyAllowed = Runtime.call("map.occupancy_allowed",
+          function() return false end, game, {
+            mapId = "VERMILION_DOCK",
+            reason = "ss_anne_departed",
+            gameVersion = game.save and game.save.version,
+            x = player.cellX,
+            y = player.cellY,
+          }) == true
+      end
+      if not occupancyAllowed then
+        local TextBox = require("src.render.TextBox")
+        game.stack:push(TextBox.new(game,
+          game.data.text._VermilionCitySailor1ShipSetSailText
+          or "The ship set sail.", function()
+          ow:startWarpTo("VERMILION_CITY", 18, 29, "up")
+        end))
+      end
    elseif f.EVENT_GOT_HM01 and ow.player.cellY == 2 then
      -- VermilionDockSSAnneLeavesScript: only stepping OFF the ship
-      -- triggers the departure (wDestinationWarpID == 1 in pokered) --
-      -- Music_Surfing plays for the sail-away cutscene, smoke puffs
-      -- drift off the funnel, the horn blows, the ship is erased to
-      -- open water, and the player is walked off the dock into the
-      -- city past the guard (VermilionCity's
-      -- SCRIPT_VERMILIONCITY_PLAYER_EXIT_SHIP walk)
+      -- triggers the departure (wDestinationWarpID == 1 in pokered)
      Flags.set(game.save, "EVENT_SS_ANNE_LEFT")
      local Music = require("src.core.Music")
      Music.stop()
      Music.play(game.data, "Music_Surfing")
-      local function puff(n, cx)
-        if n <= 0 then return end
-        ow:startDustAnim(cx, 1, function() puff(n - 1, cx + 2) end)
-      end
-      puff(3, 15)
-      -- scripts/VermilionDock.asm:182-203
-      local rows = {}
-      local function setBlock(bx, by, block)
-        if bx < 1 or bx > 8 then return end
-        rows[#rows + 1] = { "replace_block", bx, by, block }
-      end
-      rows[#rows + 1] = { "wait", 120 }
-      rows[#rows + 1] = { "play_sound", "SS_Anne_Horn" }
-      -- .shift_columns_up slides her tile columns west behind a mid-frame
-      -- rSCX split; with no split scroll here she sails one block per beat
-      -- and the water closes in astern (#360)
-      for step = 1, 8 do
-        for _, col in ipairs(DOCK_SHIP_COLUMNS) do
-          setBlock(col.bx - step, 1, col.top)
-          setBlock(col.bx - step, 2, col.bottom)
-        end
-        setBlock(9 - step, 1, DOCK_WATER_TOP)
-        setBlock(9 - step, 2, DOCK_WATER_BOTTOM)
-        rows[#rows + 1] = { "wait", 20 }
-      end
-      -- the second horn as she clears the dock, then EraseSSAnne's 120
-      -- frames before the walk out
-      rows[#rows + 1] = { "play_sound", "SS_Anne_Horn" }
-      rows[#rows + 1] = { "wait", 120 }
-      rows[#rows + 1] = { "move_player", "up", 2 }
-      -- no keepMusic on this warp: Music_Surfing belongs to the dock's
-      -- cutscene, and VERMILION_CITY's own theme has to take over as the
-      -- player crosses in (EnterMap's PlayDefaultMusic)
-      rows[#rows + 1] = { "warp", "VERMILION_CITY", 18, 31, "up" }
-      rows[#rows + 1] = { "move_player", "up", 2 }
-      ow:queueScript(rows)
+      ow:queueScript({
+        -- scripts/VermilionDock.asm:50 zeroes the player image index and
+        -- :77 freezes sprite updates, so he faces DOWN throughout (#1689)
+        { "face_player_dir", "down" },
+        { "wait", 120 },
+        { "play_sound", "SS_Anne_Horn" },
+        -- scripts/VermilionDock.asm:80 .shift_columns_up
+        { "ss_anne_departs" },
+        -- scripts/VermilionDock.asm:205 VermilionDock_EraseSSAnne
+        { "play_sound", "SS_Anne_Horn" },
+        { "wait", 120 },
+        { "move_player", "up", 2 },
+        -- no keepMusic on this warp: Music_Surfing belongs to the dock's
+        -- cutscene, and VERMILION_CITY's own theme has to take over as the
+        -- player crosses in (EnterMap's PlayDefaultMusic)
+        { "warp", "VERMILION_CITY", 18, 31, "up" },
+        { "move_player", "up", 2 },
+      })
    end
  end,
 }
@@ -216,7 +216,10 @@ local function dojoMasterGate(game, ow, x, y)
  if not master or ow:trainerDefeated(master) then return false end
  ow.player.facing = "right"
  master:facePlayer(ow.player)
-  ow:engageTrainer(master)
+  -- scripts/FightingDojo.asm:117-119 SaveEndBattleTextPointers (#1606)
+  ow:engageTrainer(master, nil,
+    ((game.data or {}).text or {})._FightingDojoKarateMasterDefeatedText,
+    nil, nil, false)
  return true
 end

@@ -516,7 +519,17 @@ M.ROUTE_24 = {
          push(game, text(game)._Route24CooltrainerM1YouCouldBecomeATopLeaderText,
            done)
        else
-          ow:engageTrainer(npc, done)
+          -- scripts/Route24.asm:125
+          ow:engageTrainer(npc, function()
+            if ow:trainerDefeated(npc) then
+              -- scripts/Route24.asm:62
+              push(game,
+                text(game)._Route24CooltrainerM1YouCouldBecomeATopLeaderText,
+                done)
+            else
+              done()
+            end
+          end, text(game)._Route24CooltrainerM1DefeatedText, true)
        end
      end
      if not flags.EVENT_GOT_NUGGET then
@@ -721,7 +734,7 @@ local function e4ExitSeal(flag, closedBlock, openBlock, dontRunText, autoFlag)
      local TextBox = require("src.render.TextBox")
      game.stack:push(TextBox.new(game,
        game.data.text[dontRunText] or "Don't run away!", function()
-        ow:scriptMove(ow.player, "up", 1)
+        ow:scriptMove(ow.player, "up", 1, nil, { collide = true })
      end))
      return true
    end,
@@ -122,9 +122,8 @@ M.CINNABAR_LAB_METRONOME_ROOM = {
 -- TM42 Dream Eater (scripts/ViridianCity.asm, the fisher).  The fisher's
 -- YouCanHaveThisText prints before GiveItem, so this gift needs a pre
 -- text (#775).  Like the SilphCo2F worker (#393) that label carries no
-- leading underscore, and on Red it sits outside the extractor's symbol
-- set, so the literal from text/ViridianCity.asm rides along as the
-- fallback; Yellow resolves the ROM string instead.
+-- leading underscore; tools/extract/text.py now collects it regardless,
+-- so preFallback below is just the safety net for a catalog without it.
 M.VIRIDIAN_CITY = {
  talk = {
    TEXT_VIRIDIANCITY_FISHER = gift({
@@ -146,9 +145,11 @@ M.SILPH_CO_2F = {
  talk = {
    TEXT_SILPHCO2F_SILPH_WORKER_F = gift({
      flag = "EVENT_GOT_TM36", item = "TM_SELFDESTRUCT",
-      -- the label carries no leading underscore: pokered keeps this one in
-      -- the script bank, not the far-text bank (#393)
+      -- the label carries no leading underscore (#393); collected like any
+      -- other text/*.asm label now, preFallback is just the safety net
      pre = "SilphCo2FSilphWorkerFPleaseTakeThisText",
+      preFallback = "Eeek!\nNo! Stop! Help!\fOh, you're not\nwith TEAM ROCKET."
+        .. "\vI thought...\vI'm sorry. Here,\vplease take this!",
      received = "_SilphCo2FSilphWorkerFReceivedTM36Text",
      explain = "_SilphCo2FSilphWorkerFTM36ExplanationText",
      noRoom = "_SilphCo2FSilphWorkerFTM36NoRoomText",
@@ -239,7 +240,7 @@ local function stepGate(opts)
    push(game, text(game)[opts.text] or opts.fallback, function()
      ow.player.facing = opts.push
      if not ow:checkLedgeHop(opts.push) then
-        ow:scriptMove(ow.player, opts.push, 1)
+        ow:scriptMove(ow.player, opts.push, 1, nil, { collide = true })
      end
    end)
    return true
@@ -646,27 +647,29 @@ end
 local rocketRows = {
  { "face_player" },                                           -- 1
  { "check_flag", "EVENT_GOT_TM28" },                          -- 2
-  { "jump_if_true", 15 },                                      -- 3 → CeruleanHideRocket
+  { "jump_if_true", 16 },                                      -- 3 → CeruleanHideRocket
  { "check_flag", "EVENT_BEAT_CERULEAN_ROCKET_THIEF" },        -- 4
-  { "jump_if_true", 9 },                                       -- 5
+  { "jump_if_true", 10 },                                      -- 5
  { "show_text", "_CeruleanCityRocketText" },                  -- 6
-  { "start_battle", "trainer", "OPP_ROCKET", 5 },              -- 7
-  { "jump_if_false", "end" },                                  -- 8
-  { "show_text", "_CeruleanCityRocketIllReturnTheTMText" },    -- 9
-  { "set_flag", "EVENT_BEAT_CERULEAN_ROCKET_THIEF" },          -- 10
-  { "give_item", "TM_DIG", 1, false },                         -- 11 (row 13 prints)
-  { "set_flag", "EVENT_GOT_TM28" },                            -- 12
-  { "show_text", "_CeruleanCityRocketReceivedTM28Text" },      -- 13
-  { "show_text", "_CeruleanCityRocketIBetterGetMovingText" },  -- 14
-  { "fade", "out" },                                           -- 15 GBFadeOutToBlack
+  -- scripts/CeruleanCity.asm:297 SaveEndBattleTextPointers
+  { "save_end_battle_text", "_CeruleanCityRocketIGiveUpText" }, -- 7
+  { "start_battle", "trainer", "OPP_ROCKET", 5 },              -- 8
+  { "jump_if_false", "end" },                                  -- 9
+  { "show_text", "_CeruleanCityRocketIllReturnTheTMText" },    -- 10
+  { "set_flag", "EVENT_BEAT_CERULEAN_ROCKET_THIEF" },          -- 11
+  { "give_item", "TM_DIG", 1, false },                         -- 12 (row 14 prints)
+  { "set_flag", "EVENT_GOT_TM28" },                            -- 13
+  { "show_text", "_CeruleanCityRocketReceivedTM28Text" },      -- 14
+  { "show_text", "_CeruleanCityRocketIBetterGetMovingText" },  -- 15
+  { "fade", "out" },                                           -- 16 GBFadeOutToBlack
  -- CeruleanHideRocket while black: GUARD1 (28,12) appears, GUARD2
  -- (27,12) and the ROCKET go.  GUARD2 blocks the trashed-house south
  -- door neighbour -- the swap reconnects the city (Bill's ticket does
  -- the same in story.lua; either route is enough).
-  { "show_object", "CERULEAN_CITY", "CERULEANCITY_GUARD1" },   -- 16
-  { "hide_object", "CERULEAN_CITY", "CERULEANCITY_GUARD2" },   -- 17
-  { "hide_object", "CERULEAN_CITY", "CERULEANCITY_ROCKET" },   -- 18
-  { "fade", "in" },                                            -- 19 GBFadeInFromBlack
+  { "show_object", "CERULEAN_CITY", "CERULEANCITY_GUARD1" },   -- 17
+  { "hide_object", "CERULEAN_CITY", "CERULEANCITY_GUARD2" },   -- 18
+  { "hide_object", "CERULEAN_CITY", "CERULEANCITY_ROCKET" },   -- 19
+  { "fade", "in" },                                            -- 20 GBFadeInFromBlack
 }

 M.CERULEAN_CITY = {
@@ -817,7 +820,8 @@ M.PEWTER_POKECENTER = {
 -- on the west-side cells and walks you back
 local function bikeGateGuard(coords, stopText, explainText)
  return function(game, ow, x, y)
-    if game.save.inventory.BICYCLE then return false end
+    local bike = game.save.inventory.BICYCLE
+    if bike and bike ~= 0 then return false end
    if not inCoords(coords, x, y) then return false end
    -- walk the player up to the tile beside the counter, no further:
    -- (matchedY - closestY) tiles, 0 when already next to it
@@ -839,10 +843,10 @@ local function bikeGateGuard(coords, stopText, explainText)
        -- (PlayerMovingRightScript). Without it the player was left
        -- parked beside the guard's counter with no way past. #518
        local function shoveRight()
-          ow:scriptMove(ow.player, "right", 1)
+          ow:scriptMove(ow.player, "right", 1, nil, { collide = true })
        end
        if dist > 0 then
-          ow:scriptMove(ow.player, "up", dist, shoveRight)
+          ow:scriptMove(ow.player, "up", dist, shoveRight, { collide = true })
        else
          shoveRight()
        end
@@ -918,10 +922,12 @@ M.SS_ANNE_2F = {
      { "move_npc_to", 2, 36, onLeft and 7 or 8 },             -- 2
      { "face_object", 2, onLeft and "down" or "right" },      -- 3
      { "show_text", "_SSAnne2FRivalText" },                   -- 4
-      { "rival_battle", "OPP_RIVAL2", 1 },                     -- 5
-      { "jump_if_false", 13 },                                 -- 6
-      { "set_flag", "EVENT_BEAT_SS_ANNE_RIVAL" },              -- 7
-      { "show_text", "_SSAnne2FRivalDefeatedText" },           -- 8
+      -- SSAnne2FRivalText's text_asm arms SaveEndBattleTextPointers
+      -- (scripts/SSAnne2F.asm:199), so the line prints in battle (#1688)
+      { "save_end_battle_text", "_SSAnne2FRivalDefeatedText" }, -- 5
+      { "rival_battle", "OPP_RIVAL2", 1 },                     -- 6
+      { "jump_if_false", 13 },                                 -- 7
+      { "set_flag", "EVENT_BEAT_SS_ANNE_RIVAL" },              -- 8
      { "show_text", "_SSAnne2FRivalCutMasterText" },          -- 9
      { "play_music", "Music_MeetRival", { start = "rival" } }, -- 10
      { "walk_npc", 2, ssAnne2FRivalExitDirs(onLeft) },        -- 11
@@ -7,9 +7,9 @@ local M = {}

 local function text(game) return game.data.text end

-local function push(game, s, done)
+local function push(game, s, done, opts)
  local TextBox = require("src.render.TextBox")
-  game.stack:push(TextBox.new(game, s, done))
+  game.stack:push(TextBox.new(game, s, done, opts))
 end

 -- PrintText on a text_end string returns with the box still drawn and
@@ -236,7 +236,6 @@ M.CINNABAR_GYM = {
          if yes == machine.yes then
            -- CinnabarGymQuizCorrectText: item jingle, then the gate
            -- slides open (SFX_GO_INSIDE) if it was still locked
-            Sound.play(game.data, "Get_Item1")
            push(game, t._CinnabarGymQuizCorrectText
              or "You're absolutely\ncorrect!\fGo on through!", function()
              if not game.save.flags[gymGateFlag(index)] then
@@ -244,7 +243,9 @@ M.CINNABAR_GYM = {
                Sound.play(game.data, "Go_Inside")
              end
              applyGymGates(game, ow)
-            end)
+            end, { preSound = function()
+              return Sound.play(game.data, "Get_Item1")
+            end })
            return
          end
          Sound.play(game.data, "Denied")
@@ -17,9 +17,9 @@ local function surfingPikachu(game)
  return nil
 end

-local function push(game, text, done)
+local function push(game, text, done, opts)
  local TextBox = require("src.render.TextBox")
-  game.stack:push(TextBox.new(game, text, done))
+  game.stack:push(TextBox.new(game, text, done, opts))
 end

 -- the two-variant posters: the surf-capable line once a surfing
@@ -69,11 +69,11 @@ return {

      TEXT_SUMMERBEACHHOUSE_PIKACHU = function(game, ow, npc, done)
        local t = game.data.text
+        -- scripts/SummerBeachHouse.asm:68
        push(game, t._SummerBeachHousePikachuText or "PIKACHU: Pikaa!",
-          function()
-            require("src.core.Sound").playCry(game.data, "PIKACHU")
-            done()
-          end)
+          done, { auto = { wait = true, delay = 0, sound = function()
+            return require("src.core.Sound").playCry(game.data, "PIKACHU")
+          end } })
      end,

      TEXT_SUMMERBEACHHOUSE_POSTER1 = poster(1),
@@ -55,16 +55,6 @@ In-game controls use the normal PortMaster / SDL pad map, rebindable under

 ## Notes

-**GBC FX is off on this device.** The launcher exports `POKEPORT_GBCFX=0`,
-which hides the GBC FX row from OPTIONS, pins the level to OFF, and clears a
-level carried over in an `options.lua` from another machine. The H700's Mali
-GPU is in the same class as the phone GPUs that compile that present pass and
-then show a black frame (issue #136), and `love.system.getOS()` reports
-`"Linux"` here, so the Android gate would not have caught it. Every other
-display option — COLORS, TILT, ZOOM, VOID FILL, MAX FPS — works normally. If
-your device turns out to handle the pass, launch with `POKEPORT_GBCFX=1` to
-put the row back.
-
 **PERFORMANCE defaults to LOW here.** The OPTIONS → PERFORMANCE tier defaults
 to AUTO, which reads this device as an ARM Linux handheld and resolves to
 **LOW**: the 3D tilt and survey zoom stay off and the frame rate is capped,
@@ -105,8 +105,9 @@ trixie.
 This is a statement about the *compile environment*, not about where the
 artifact runs — building on your own newer distro would silently raise that
 floor and strand every user on an older one, with no symptom until they
-download it. CI enforces the floor: `linux-arm64-build` fails if the highest
-required glibc symbol version climbs above 2.31.
+download it. `scripts/linux-arm64/verify_appimage.sh` enforces the floor in
+both CI (`linux-arm64-build`) and the release workflow: the build fails if
+the highest required glibc symbol version climbs above 2.31.

 ### Why five libraries are built from source

@@ -172,13 +173,15 @@ Three jobs, path-gated on `scripts/build_linux_arm64.sh`,
  exclude list still classifies known sonames correctly, that AppRun still
  launches `game.love` with `--fused`, and that the host-arch guard actually
  fires. Needs no container and no arm64 machine.
- **`linux-arm64-build`** (`ubuntu-24.04-arm`) — the real build, then extracts
-  the artifact and asserts the layout, that every bundled object resolves
-  under AppRun's `LD_LIBRARY_PATH`, and that the glibc floor is still ≤ 2.31.
-  Uploads the AppImage for 7 days.
+- **`linux-arm64-build`** (`ubuntu-24.04-arm`) — the real build, then
+  `scripts/linux-arm64/verify_appimage.sh` extracts the artifact and asserts
+  the layout, that every bundled object resolves under AppRun's
+  `LD_LIBRARY_PATH`, and that the glibc floor is still ≤ 2.31. Uploads the
+  AppImage for 7 days.
 - **release** — `linux-arm64` runs on `ubuntu-24.04-arm`, reuses the shared
-  `game.love` from the `love-payload` job, and the AppImage is staged and
-  published like every other release asset.
+  `game.love` from the `love-payload` job, runs the same
+  `verify_appimage.sh` checks on the shipped image, and the AppImage is
+  staged and published like every other release asset.

 Unlike the Switch job, none of this needs secrets or self-hosted hardware, so
 it runs on fork PRs too.
@@ -24,7 +24,7 @@ The short version, for an author deciding what to write:
  merged.** The write is taken, dropped, and named once per mod in the same
  error feed the mod manager shows -- in both directions, so a Red boot writing
  to `decorations` is told exactly as a Gold boot writing to `map_scripts` is.
- **40 event names and 43 hook names have a call site in both generations**, so
+- **40 event names and 44 hook names have a call site in both generations**, so
  one subscription serves both games. `tests/engine/gate_gen2_mod_api.lua`
  reads those names back out of the source and fails if a site is renamed or
  deleted on either side, and fails again if a new shared site appears without
@@ -55,9 +55,10 @@ The short version, for an author deciding what to write:
 ```

 `games` is an optional array of version ids (`"red"`, `"blue"`, `"yellow"`,
-`"gold"`), generations (`"gen1"`, `"gen2"`, case-insensitive) or `"all"`.
-`src/mods/ModTargets.lua` resolves the tokens off `GameVersion.ORDER` and
-`GameVersion.generation`, so nothing anywhere restates the game list.
+`"gold"`, `"silver"`, `"crystal"`), generations (`"gen1"`, `"gen2"`,
+case-insensitive) or `"all"`. `src/mods/ModTargets.lua` resolves the tokens off
+`GameVersion.ORDER` and `GameVersion.generation`, so nothing anywhere restates
+the game list. `"gen2"` now expands to Gold, Silver and Crystal.
 `Manifest.validate` stores the resolved, ORDER-sorted ids on `manifest.games`
 and **derives** `manifest.gen2compat` from them, which is the one field the
 loader's gate reads.
@@ -468,8 +469,11 @@ is warned once per name and the rest of the list still runs. The engine's own
 Gen 1 verbs are **not** seeded on Gold: a row-list verb handed Gold's ctx would
 find no runner on it, so `data.commands` under Gen 2 is the mod verbs alone.

-**`mod.save`, `mod.options`, `mod.log`, `mod.assets`, `mod.find`, exports.**
-Generation-agnostic; nothing to adapt.
+**`mod.save`, `mod.options`, `mod.log`, `mod.assets`, `mod.find`,
+`mod.developer`, exports.** Generation-agnostic; nothing to adapt.
+`mod.developer` is the same fixed boot-time boolean on both generations and is
+available while the entry chunk runs. Gold does not gain Gen 1's developer
+console or F5 hot-reload hotkey; the field reports the loader's mode only.

 **`mod.world`.** Same method set, resolved against Gold's world
 (`src/world/gen2/WorldAPI.lua`). Two differences show through and are
@@ -512,8 +516,9 @@ gains a field instead of the name gaining a prefix.
  id under Gen 1's `name` key, which is the one payload difference the
  numeric flag space forces.
 - *Menus (`src/ui/gen2/`):* `ui.start_menu.items`, `ui.title_menu.items`,
-  `ui.options.rows`, `ui.party.submenu`, `ui.naming.grid`, `ui.pc.items`,
-  `ui.list_menu`, `transition.style`. `ui.list_menu` covers Gold's script
+  `ui.options.rows`, `ui.party.submenu`, `ui.party.grid_navigation`,
+  `ui.naming.grid`, `ui.pc.items`, `ui.list_menu`, `transition.style`.
+  `ui.list_menu` covers Gold's script
  menus (`ScriptMenu.lua`); the `Chrome.List` widget the START and title
  menus draw with does not raise it yet, so those two are composed through
  their own hooks only.
@@ -537,7 +542,8 @@ gains a field instead of the name gaining a prefix.
  `battle.damage_dealt`, `battle.fainted`, `battle.status_inflicted`,
  `battle.battler_switched`, `battle.ball_thrown`, `battle.exp_gained`,
  `pokemon.level_up`, `pokemon.move_learned`; hooks `battle.damage`,
-  `battle.crit`, `battle.accuracy`, `battle.turn_order`,
+  `battle.crit`, `battle.accuracy`, `battle.charge_required`,
+  `battle.turn_order`,
  `battle.enemy_action`, `battle.run`, `battle.exp_award`, `exp.gain`,
  `catch.rate`, `trainer.party`, `battle.overlay`, `battle.low_health_alarm`,
  `battle.catch_exp`, `battle.bottom_ui_visible`,
@@ -547,6 +553,17 @@ gains a field instead of the name gaining a prefix.
  screen has no `.data` field, so the Gen 2 site **adds** `ctx.data` beside the
  Gen 1 keys. A mod that calls `nextFn` is unaffected; one that reaches through
  `ctx.battle.data` instead gets nil on Gold.
+  `battle.exp_award`'s `ctx.applyShare(mon, split, announce)` reads its third
+  argument on both generations: truthy prints the mon's GainedText, falsy pays
+  it silently, so one mod source can print a single summary line for a
+  party-wide award instead of a box per recipient. Gold honours it **only when
+  it is passed**, by argument count -- `applyShare(mon, split)` was written
+  against a seam that always announced on Gold and keeps announcing there,
+  while `applyShare(mon, split, nil)` is silent on both. Pass the argument
+  explicitly and the two generations agree; omit it and Gen 1 stays silent
+  where Gold speaks. Only the line is affected: the exp, the stat exp,
+  `battle.exp_gained`, the level-up line, learned moves and the forget prompt
+  happen either way.
 - *The catch and the evolution:* `pokemon.caught`, `pokemon.evolved`; hook
  `evolution.check`. `src/ui/gen2/BattleState.lua:pushCaught` emits
  `pokemon.caught` once the mon is in the party or the box, and
@@ -559,7 +576,7 @@ gains a field instead of the name gaining a prefix.
  at the same moment `src/core/Game.lua` and `src/render/Renderer.lua` raise it
  -- the logic tick before the pad is read, a pointer the touch overlay gets
  first refusal on, the palette zone list handed to the present pass, the
-  composed frame before GBCFX, the letterbox, and the finished playfield rect
+  composed frame before ShaderFX, the letterbox, and the finished playfield rect
  -- and carries the same payload.
  `render.hud`'s `gameX` / `gameY` really is where Gold's dialogue boxes and
  menus land, because `Chrome.fitScale` / `fitOrigin` and `World:fitScale`
@@ -769,6 +786,9 @@ name and the existing payload, plus fields where Gen 2 genuinely carries more

 The list is much shorter than it was. What is outstanding, in descending value:

+- `battle.field_residual`: the first guarded call site is in Gen 1 end-of-round
+  processing. Gold already has a native weather/between-turn pipeline but does
+  not yet expose the shared data-only descriptor hook.
 - `trainer.before_battle`: Gold constructs and pushes its trainer battle in
  `src/world/gen2/World.lua:startBattle`, which does not yet expose a deferred
  preparation boundary or a battle-local player-party view. Gen 1 mods can use
@@ -81,7 +81,7 @@ Every mod contains a root `manifest.json` defining its metadata, supported games
 | `entry` | `string` | Entry Lua file path relative to mod root (usually `"main.lua"`). |
 | `profile` | `string` | Mod profile: `"content"`, `"overhaul"`, or `"total_conversion"`. |
 | `category` | `string` | Categorization chip (e.g. `"GAMEPLAY"`, `"CONTENT"`, `"UI"`, `"AUDIO"`). |
-| `games` | `array` | Supported game versions: `["gen1"]`, `["gen2"]`, `["red"]`, `["blue"]`, `["yellow"]`, `["gold"]`, or `["all"]`. |
+| `games` | `array` | Supported game versions: `["gen1"]`, `["gen2"]`, `["red"]`, `["blue"]`, `["yellow"]`, `["gold"]`, `["silver"]`, or `["all"]`. |
 | `game_version`| `string` | Semver range of required engine version (e.g. `">=0.0.0-dev <2.0.0"`). |
 | `priority` | `integer` | Load priority order (lower numbers load earlier; dependencies always precede dependents regardless of priority). |
 | `dependencies` | `array` | Hard required dependencies. A mod will not load if a required dependency is missing or disabled for the active game. |
@@ -122,21 +122,40 @@ Each object requires a stable `id`, a display `name`, a destination `file`
 digests. `format` is either `"raw"` (the default) or `"n64"`. An optional
 `description` gives players dump or region guidance in the import panel.
 `size` declares the exact canonical byte length; `max_size` declares a smaller
-per-import ceiling when an exact size is not appropriate. Every import also
-has an engine-enforced 128 MiB ceiling and is rejected before hashing when its
-filesystem reports an invalid size.
+per-import ceiling when an exact size is not appropriate. The engine hard limit
+is 2 GiB. Imports above 128 MiB receive an explicit free-space confirmation and
+use the launcher's streaming large-file path rather than being materialized as
+one Lua string.

 For `"n64"`, the launcher recognizes `.z64`, `.v64`, and `.n64` byte orders,
 strips a recognized 512-byte copier header, converts the bytes to canonical
 big-endian `.z64` order, and then checks MD5. The canonical bytes are written
 to `mods/<mod-id>/baseroms/<file>`. Each selection is a private grant to that
 mod: the launcher never scans or copies another mod's imported files merely
-because its manifest names the same digest. Mods read the result with their existing scoped `mod:read` API, for
-example `mod:read("baseroms/stadium2.z64")`; no host path or new filesystem
+because its manifest names the same digest. Small sources can still be read
+with the existing scoped `mod:read` API, for example
+`mod:read("baseroms/stadium2.z64")`. For large sources, prefer the bounded
+`mod.imports` facade described below; no host path or new general filesystem
 permission is exposed. Missing `required_imports` block the mod before its
 entry chunk runs; missing `optional_imports` remain visible in the same
 launcher panel but do not block loading.

+#### Bounded access to validated imports
+
+A loaded mod can address only ids declared by its own `required_imports` or
+`optional_imports` arrays:
+
+```lua
+local info, err = mod.imports:info("stadium2")
+local header, err = mod.imports:read("stadium2", 0, 4096)
+```
+
+`read` uses zero-based offsets and is capped at 8 MiB per call. The engine
+rechecks the stored import before exposing it, seeks into the engine-owned
+copy, and never gives the mod a host path or file handle. This is intended for
+large source formats whose table/index can be parsed with small reads before
+selectively reading the payloads a transform actually needs.
+
 MD5 here identifies a known dump because ROM databases commonly publish it;
 it is not a security or authenticity guarantee. Do not paste the SHA-1 used by
 Gen1Recomp's own game-ROM importer into an import's `md5` field. Mod archives
@@ -209,6 +228,66 @@ optional visual `tileRows` at 2x resolution, and optional `tileDetailRows` at
 read-only snapshots; mods choose which layers to render. Red and Gold expose
 the same contract while applying their own object and event visibility rules.

+### Active Gen 1 block checks
+
+Red, Blue, and Yellow expose
+`mod.world:activeBlockAt(mapId, blockX, blockY)`. It returns the numeric block
+ID at one zero-based block coordinate only when `mapId` is the active map.
+The value is a scalar snapshot: changing it cannot change the map. This lets a
+mod compare a small runtime map signature before it applies a lawful authored
+replacement, without reading the mutable map or ROM cache through engine
+internals.
+
+The method fails closed. Before an overworld exists it returns
+`nil, "no overworld"`; for a different active map it returns
+`nil, "map is not active"`; non-numeric, non-finite, or fractional coordinates
+return `nil, "invalid block coordinates"`; and negative or out-of-range
+coordinates return `nil, "block coordinates out of bounds"`. An unavailable
+or malformed active block returns `nil, "block unavailable"`. The caller must
+require every expected cell to match before changing presentation. This method
+is Gen 1-only; Gold callers receive no parity promise for it.
+
+The same unavailable result covers missing or sparse active block storage and
+an accessor result that does not match its validated active block slot.
+
+### Conditional map occupancy
+
+`map.occupancy_allowed` is a narrow Gen 1 hook around a map script's vanilla
+decision to eject the player from an otherwise valid loaded map. Its first
+call site is the post-departure `VERMILION_DOCK` branch. The ship has already
+been erased when the hook runs, and the hook does not replace or suppress any
+base or peer map handler.
+
+The wrapper receives `(next, game, context)`. The dock context is a copied
+`{ mapId = "VERMILION_DOCK", reason = "ss_anne_departed", gameVersion, x, y }`
+record. Vanilla returns `false`. Return exactly `true` to allow the player to
+remain; every other value denies occupancy and preserves the normal message
+and warp. A composable wrapper calls downstream first and only adds its own
+permission:
+
+```lua
+mod.hooks:wrap("map.occupancy_allowed", function(next, game, ctx)
+  local allowed = next(game, ctx)
+  local mine = ctx.mapId == "VERMILION_DOCK"
+    and ctx.reason == "ss_anne_departed"
+    and myPublicEligibilityCheck(game)
+  return allowed == true or mine == true
+end)
+```
+
+With no wrapper, the hook allocates no context and vanilla behavior is
+unchanged. A throwing wrapper is isolated by the normal hook bus. A nil,
+string, number, table, or other malformed final answer fails closed. Disabling
+or uninstalling the permitting mod therefore restores vanilla ejection without
+changing the S.S. Anne story flag or restoring the ship.
+
+Normal hook-chain ownership applies: a wrapper that does not call `next`
+intentionally owns the final answer and does not run lower-priority wrappers.
+Permission wrappers must call `next` as shown above to compose. A noncompliant
+wrapper that returns false without calling `next` safely denies occupancy and
+can suppress downstream permission by this standard rule. A malformed answer
+also fails closed and cannot force occupancy.
+
 ## Party ordering

 Companion UIs and alternate party screens can call
@@ -246,6 +325,80 @@ Red exposes FLY separately because it requires a destination picker:
 and `mod.world:flyTo(mapId)` accepts only a visited destination from the native
 Fly town list. Gold does not expose these two methods yet.

+## Self-driven world actors
+
+`mod.world:spawnNpc()` returns a handle whose `scriptMove` queues onto the
+overworld's scripted-movement list. A non-empty list is how the overworld
+knows a cutscene is running, so it gates player input for as long as the
+actor walks -- right for Oak marching to his lab, wrong for an actor that
+moves on its own schedule (a networked player's ghost, an ambient walker).
+Five handle methods drive one without that lockout:
+
+```lua
+local ghost = mod.world:spawnNpc({ map = "ROUTE_1", x = 5, y = 7,
+                                   sprite = "SPRITE_RED" })
+if ghost:canStep("up") then ghost:stepNow("up") end   -- one tile, now
+if not ghost:isMoving() then ghost:placeAt(9, 3, "down") end  -- snap, no walk
+ghost:setPassable(true)                               -- walk-through
+```
+
+`stepNow(dir)` sets the same per-tile state `scriptMove` does, minus the
+queue. It deliberately does **not** check collision: a caller replaying a
+move that was already decided elsewhere (validated on a peer's machine, or
+authored) would let the two copies disagree about where the actor is if this
+re-judged it. Ask `canStep(dir)` first when you do want the map's opinion.
+`placeAt(x, y, facing)` snaps with no animation and clears any step in
+flight, for a warp arrival or a resync too far gone to walk off.
+`isMoving()` lets a driver pace itself instead of stomping a move already
+running. `setPassable(flag)` is the flag `Collision.occupied` skips (the
+engine's own user is Yellow's companion Pikachu); a passable object still
+draws and can still be talked to.
+
+An object spawned this way carries no `TEXT_*` id, so the vanilla talk path
+has nothing to say for it. The **`world.talk`** hook is the A press on an
+object, raised before the map's text tables get it:
+
+```lua
+mod.hooks:wrap("world.talk", function(next, ow, target)
+  if mine(target) then
+    say(target)        -- the mod answers for an object it owns
+    return             -- ...by not calling next()
+  end
+  return next(ow, target)   -- everything else falls through unchanged
+end)
+```
+
+With no subscriber the A press reaches `talkTo` exactly as before. An object
+mid-step raises no hook, matching the vanilla gate.
+
+## Adopting an already-paired link session
+
+`LinkState.newFromSession(game, transport, mode, isHost, opts)` starts a link
+session on a transport that is *already* paired, skipping the address/code
+entry UI while keeping the hello and fingerprint compatibility exchange
+intact. `transport` is anything `Session` accepts, which is what lets a mode
+tunnel a battle through its own connection rather than opening a second one.
+
+When the battle finishes, **`link.battle_ended`** reports the outcome:
+
+```lua
+mod.events:on("link.battle_ended", function(ev)
+  -- ev = { result, myParty, theirParty, peerName, role }
+end)
+```
+
+The party copies are the point. Cable rules leave the real party untouched,
+so a mode built on link battles -- a tournament ladder, a battle royale --
+has no other way to learn what the fight cost, and by the time the state
+unwinds the battle object is gone. `role` is `"host"` or `"guest"`.
+
+Two smaller pieces support the same shape of mode. `Game:startNewGame(opts)`
+is the title screen's NEW GAME closure made callable, with `opts.intro =
+false` to land straight in the world -- a mode that hands out its own starting
+state has no use for Oak's speech. `CodeEntry.new` takes an optional
+`{ length = , charset = }`, so the slot-scrub widget that enters a link code
+can also carry a room code or an address.
+
 ## Read-only battle snapshots

 `mod.battle:snapshot()` returns `nil` outside a battle and a copied battle
@@ -441,6 +594,28 @@ default** (1x front, 2x back).
  ball-to-pic grow multiplies your scale through each stage, so a rescaled
  mon still grows into place from the ball, grounded the whole way.

+## Installation-scoped generated cache
+
+Generated data derived from a validated user source often belongs to the mod
+installation rather than to one Pokémon save. `mod.cache` is that namespace:
+
+```lua
+local ok, err = mod.cache:write("extract/v1/arena.bin", encodedArena)
+local bytes, err = mod.cache:read("extract/v1/arena.bin")
+local info = mod.cache:info("extract/v1/arena.bin")
+mod.cache:delete("extract/v1/arena.bin")
+```
+
+The physical root is engine-owned (`mod_cache/<mod-id>/`) and never exposed to
+the mod. Keys are safe relative paths and a single write is capped at 64 MiB.
+The cache does not rewind with checkpoints and is not scoped to game version,
+slot, or playthrough. The mod owns its generated format, fingerprints, rebuild
+policy, and completion marker; the engine treats the bytes as opaque data.
+
+Use `mod.storage` instead when the data belongs to one playthrough. Use
+`mod.cache` when it is a reproducible installation artifact that can be rebuilt
+from a declared user source.
+
 ## Durable tool storage and runtime checkpoints

 `mod.save` remains the right place for state that should travel with the next
@@ -633,17 +808,51 @@ the selected indices. Mods remain responsible for selection policy and should
 use only public `mod.ui`, hook, and save APIs. See RFC 0010 for the exact
 contract and compatibility guarantees.

+Both battle engines expose the guarded `battle.charge_required` hook when a
+charge-capable move is selected for its initial turn and the active ruleset
+would otherwise charge it. The wrapper receives `(next, ctx)`, where `ctx` is
+`{ battle, user, target, move, charge = true, isCalled }`. Return `false` to
+skip only that initial charge and continue through the ordinary move pipeline;
+call `next(ctx)` to keep it. The hook does not run for the release turn or when
+the active ruleset already skips charging (for example, Gold Solarbeam in
+sun). PP use, accuracy, damage, animation, and secondary effects remain owned
+by the engine. With no subscriber, the vanilla decision runs without building
+the hook context.
+
 ## Developer console

-Boot with developer mode on to unlock the in-game console and hot-reload
-hotkeys. Either set `POKEPORT_DEV=1` in the environment or pass
-`--developer` on the command line:
+On a Gen 1 boot, developer mode unlocks the in-game console and hot-reload
+hotkeys. Either set `POKEPORT_DEV=1` in the environment or pass `--developer`
+on the command line:

 ```sh
 love . --developer
 ```

-While developer mode is active:
+The mod loader independently derives a matching boolean for every sandboxed
+entry chunk as `mod.developer`. It is available while the entry file is
+loading, so a mod can keep diagnostic commands, screens, and verbose tracing
+out of player builds:
+
+```lua
+if mod.developer then
+  mod.commands:register("my_mod:diagnostics", function(ctx)
+    -- open or print this mod's diagnostic view
+  end)
+end
+```
+
+`mod.developer` is a plain boolean snapshot for this boot. It grants no
+permission and exposes neither the process environment nor the loader. In a
+normal player boot it is `false`; `POKEPORT_DEV=1` and `--developer` make it
+`true`. On Gen 1 those inputs separately enable the console and hot-reload
+hotkeys. The headless loader's `opts.dev` test seam changes only the loader
+signal and diagnostics; it does not enable the game's console or hot reload.
+Gold exposes the same `mod.developer` boolean but does not implement the Gen 1
+console or hotkeys. Use a mod option for player-facing feature toggles rather
+than treating developer mode as configuration.
+
+While developer mode is active on Gen 1:

 - `` ` `` (backtick) opens the console overlay — a Lua REPL with `game`,
  `data` and `mods` in scope. Press `` ` `` again to close it.
@@ -754,7 +963,7 @@ contract, so a mod does not need a desktop-specific rendering path.

 `render.output_enabled` and `render.output` are the later, whole-window seam
 for mods that need the engine's normal composite rather than its separate
-layers. It runs after registered present pipelines and before GBCFX,
+layers. It runs after registered present pipelines and before ShaderFX,
 `render.hud`, and touch controls. A mod wraps both hooks: the first returns
 `true` only while output ownership is needed, and the second receives
 `(next, ctx)` with `canvas`, `width`, `height`, `gameX`, `gameY`, `gameWidth`,
@@ -805,6 +1014,47 @@ which stay unconditional and are never visible to a subscriber.
 Developer mode also arms the mod loader's dev tripwire, which flags mods
 that reach outside their permission set.

+## Battle field residual hook
+
+`battle.field_residual` lets a Gen 1 battle-rule mod request end-of-round
+damage without mutating live battlers. It is guarded and runs after vanilla
+status residuals, before field-token expiry and `battle.turn_ended`. The
+wrapper receives `(next, context)`, calls `next(context)` for the existing
+descriptor list, and appends data-only rows:
+
+```lua
+mod.hooks:wrap("battle.field_residual", function(next, context)
+  local rows = next(context)
+  rows[#rows + 1] = {
+    side = "enemy", amount = 7,
+    message = context.battlers.enemy.name .. " is buffeted!",
+  }
+  return rows
+end)
+```
+
+`context.field` is a detached, data-only view with the same
+`{ weather, tokens }` shape that battle checkpoints capture; it does not expose
+`field.sides` or any live battler aliases. The projection recursively retains
+raw tables and finite numbers, strings, and booleans under scalar keys. It
+strips metatables and omits functions, userdata, threads, unsupported keys, and
+cyclic edges. Consequently a wrapper cannot obtain or invoke an engine callback
+even if a live field token uses one internally, and changing any nested view
+value cannot change live field state. `context.battlers.player` and `.enemy` are
+detached `{ side, name, hp, maxHp, types, vanished }` views, and `context.turn`
+is the current turn number. A descriptor accepts `side`
+(`player` or `enemy`), a positive, finite integer number `amount`, and an
+optional string `message`.
+Numeric strings and invalid rows are ignored; damage is clamped to current HP.
+The engine retains HP-bar, faint, experience, and replacement authority. If
+both active battlers take terminal residual damage together and the player has
+no healthy reserve, this hook batch queues only the player faint authority and
+resolves as a blackout loss without an enemy-faint EXP award or replacement.
+That precedence is local to accepted rows from this hook; native faint paths
+are unchanged when no hook is active. Hook callbacks remain process-local;
+checkpoints serialize only field data. Gold does not yet raise this hook; its
+native weather pipeline is documented in `docs/mod-api-gen2-compat.md`.
+
 ## Process-lifecycle hooks

 These exist so a platform-specific launcher integration (a native shell
@@ -11,11 +11,17 @@ Features intentionally added beyond the original Pokémon Red, Blue, and Yellow
 * **Persistent custom options** stored separately from game saves
 * **Optional widescreen battle layout**
 * **Mobile touch controls** with editable layouts, vibration, and orientation settings
-* **Touch skins** in RetroArch overlay format, with bezel art, per-button press states, and Super Game Boy borders
+* **Screen position setting** (center, upper, top) shared across all games, for clamp-on controllers that cover the lower screen
+* **Touch skins** in RetroArch overlay format and Delta `.deltaskin` (including PDF-wrapped bezel art), with per-button press states and Super Game Boy borders
 * **Pokédex diploma and printer image exports**
-* **Mod download counts** from the index feed, with Most-downloaded and Trending sorts
+* **Shareable mod lists** over save sync, optionally carrying the options set for those mods, which the receiving device is asked about before anything is changed
+* **Custom carts**, a named mod set saved from the mods tab and picked from a game's page, with its own shell colour, label art, save slots and export file
+* **Install required mods**, one press on a cart that will not start, fetching every pinned mod at the pinned version and refusing any archive whose hash is not the one the cart recorded
+* **Browse carts in Find mods**, a Mods / Carts switch on the same community index, searched and filtered by base game, installing the cart file straight into that game's cart list

 ## Gen 2 Specifics

+* **Pokémon Silver** as an importable, launcher-selectable version alongside Gold
+* **Pokémon Crystal** as an importable, launcher-selectable version alongside Gold and Silver
 * **Mod manager** with Gen 1 mod adapters, per-game targeting, and `modkit gen2check`
 * **Followers** for mods, plus Gen 2-only registries and hooks
@@ -176,7 +176,7 @@ something the filesystem encodes.

 | token | means |
 | --- | --- |
-| `"red"`, `"blue"`, `"yellow"`, `"gold"` | that one game (a version id from `GameVersion.ORDER`) |
+| `"red"`, `"blue"`, `"yellow"`, `"gold"`, `"silver"`, `"crystal"` | that one game (a version id from `GameVersion.ORDER`) |
 | `"gen1"`, `"gen2"` | every game of that generation (case-insensitive; `"gen 2"` also parses) |
 | `"all"` | every game this engine has |

@@ -768,7 +768,8 @@ the same:
 So: read the log for coverage problems, and the manager for load problems.

 `POKEPORT_IDENTITY=<name>` sandboxes the save directory if you want a clean
-profile to test in, and `POKEPORT_DEV=1` adds the console and `F5` hot reload.
+profile to test in. `POKEPORT_DEV=1` makes `mod.developer` true for loader-gated
+diagnostics; Gold does not add Gen 1's console or `F5` hot reload.

 ## What this guide does not promise

@@ -1,7 +1,8 @@
 # What This Port Requires

 The packaged desktop app requires one user-supplied input on first boot: a
-canonical 1 MiB US Pokemon Red, Blue, or Yellow ROM.
+canonical 1 MiB US Pokemon Red, Blue, or Yellow ROM, or a canonical 2 MiB US
+Pokemon Gold or Silver ROM.

 The importer verifies the SHA-1 for the game (see `src/core/GameVersion.lua`
 for specific hashes). Other revisions and Virtual Console releases are rejected
@@ -15,7 +16,8 @@ Python and Pillow are not required by the packaged app.

 Assembly removes high-level names and some relationships that the Lua port
 needs. The version-specific files `tools/rom_manifest.json`,
-`tools/rom_manifest_blue.json`, and `tools/rom_manifest_yellow.json` therefore
+`tools/rom_manifest_blue.json`, `tools/rom_manifest_yellow.json`,
+`tools/rom_manifest_gold.json`, and `tools/rom_manifest_silver.json` therefore
 contain:

 - the ROM symbol addresses actually read by the extractor
@@ -0,0 +1,141 @@
+# RFC 0008 — Streamed mod imports and installation-scoped generated cache
+
+## Motivation
+
+`required_imports`/`optional_imports` can now describe files up to 2 GiB, but
+the existing launcher and public mod API still assume imported bytes are small:
+
+* the Windows desktop picker stages a selected required import through a fixed
+  `%TEMP%/pokeport_required_import.bin` path before validation;
+* the fallback import path materializes the selected file as one Lua string;
+* after validation a mod can only use `mod:read("baseroms/...")`, which also
+  materializes the whole file;
+* `mod.storage` is intentionally scoped to one Pokémon playthrough, so it is
+  not an appropriate home for a one-time generated asset cache shared by every
+  save using the same installed mod.
+
+This makes optical-disc-sized user sources impractical even though the manifest
+schema already accepts them. A failed temporary staging copy can also turn a
+valid large source into a smaller temporary file and produce a misleading
+"wrong file size" rejection.
+
+A mod should be able to consume its own already-validated source incrementally
+and compile derived runtime data once, without receiving a host path or general
+filesystem access.
+
+## Decision being extended
+
+This extends the same legal/sandbox direction as **D11 asset transforms**
+(`src/mods/AssetTransform.lua`): mods distribute recipes and derive bytes from
+user-owned sources rather than shipping ROM-derived data. It also follows the
+**D14 parity-gate** contract referenced by `tests/harness.lua` and
+`tests/engine/gate_meta_coverage.lua` (the `21-testing-and-ci` plan): additive
+extension points ship public-API coverage, no-mod parity coverage, and docs in
+the same change.
+
+The historical D11 plan document is referenced by source comments but is not
+present in the current repository tree; this RFC is the checked-in design
+record for the new surface.
+
+## Exact API delta
+
+No manifest field changes. Existing `required_imports` and `optional_imports`
+remain the declaration/validation authority.
+
+Two additive facades are added to the `mod` object.
+
+### `mod.imports`
+
+```lua
+local info, err = mod.imports:info("source_id")
+local bytes, err = mod.imports:read("source_id", offset, length)
+```
+
+* `source_id` must name an import declared by the calling mod.
+* the import is rechecked through `RequiredImports.validateStored` before it is
+  exposed, so missing, replaced, or invalid optional imports are not readable;
+* `offset` and `length` are zero-based byte coordinates;
+* one read is capped at 8 MiB;
+* no host path or file handle is returned;
+* production reads seek into the engine-owned stored copy instead of reading
+  the whole source.
+
+`info()` returns declaration metadata plus stored size. It does not expose a
+host path.
+
+### `mod.cache`
+
+```lua
+mod.cache:write("extract/v1/model.bin", bytes)
+local bytes = mod.cache:read("extract/v1/model.bin")
+local info = mod.cache:info("extract/v1/model.bin")
+mod.cache:delete("extract/v1/model.bin")
+```
+
+The cache is rooted at `mod_cache/<mod-id>/`, follows the engine persistence
+backend, and is independent of game version, launcher slot, and playthrough.
+Paths are checked with `SafePath`; `..`, absolute paths, drive paths, and other
+escapes remain unavailable. A single cache write is capped at 64 MiB so large
+generated datasets are naturally split into independently replaceable files.
+
+The engine does not interpret cache bytes. Mods own generated-format versioning,
+fingerprints, transactional completion markers, and rebuild policy.
+
+## Launcher/import transport delta
+
+For large raw required imports:
+
+1. desktop pickers return the original selected path instead of staging it
+   through a fixed temporary file;
+2. the engine opens that source itself;
+3. bytes are copied directly to the existing engine-owned
+   `mods/<id>/baseroms/<file>` destination in 4 MiB chunks;
+4. MD5 is updated incrementally during the copy;
+5. the normal size/MD5 validation receipt is written only after the complete
+   destination passes validation;
+6. partial destinations are removed on short reads, write failure, size
+   mismatch, or digest mismatch.
+
+N64 imports stay on the existing canonicalization path because byte-order and
+copier-header normalization require transformation rather than a raw copy.
+
+If a validation receipt for an already-stored large raw import is missing, the
+engine rebuilds it with streaming MD5 rather than a whole-file read.
+
+## Backward compatibility / migration
+
+**Existing mods do nothing.** This is additive.
+
+* manifest v1/v2 fields are unchanged;
+* `mod:read`, `mod.storage`, registries, events, hooks, and legacy compatibility
+  retain their existing behavior;
+* small required imports retain the existing in-memory validation path;
+* N64 imports retain canonicalization and existing accepted byte orders;
+* a mod that never touches `mod.imports` or `mod.cache` creates no new cache
+  files and observes no new behavior.
+
+The mod API integer is not bumped because no existing member changes meaning or
+shape.
+
+## Security and legal posture
+
+The launcher remains the authority that validates user-supplied bytes. The new
+facade narrows access rather than widening it: a mod can read only ids declared
+in its own manifest, only after validation, and only in bounded ranges. It does
+not receive host paths, `io`, or a raw filesystem handle.
+
+`mod.cache` is writable only beneath the calling mod's generated-cache root.
+Nothing in this RFC permits packaged ROM-derived bytes; `modkit lint/pack`
+continue to enforce the existing legal posture.
+
+## Parity guarantee
+
+The change ships with:
+
+* a no-mod/API-v1 parity test proving an empty load and an existing v1-style
+  `mod:read` load do not create cache data or change the old surface;
+* a public mod-API test that reaches `mod.imports` and `mod.cache` through a
+  real `Loader` load, including bounded reads, undeclared/missing imports,
+  cache isolation, and traversal rejection;
+* incremental MD5 vectors and a large-import streaming regression test;
+* the existing engine suite, required-import suite, and mod lint gates.
@@ -0,0 +1,92 @@
+# RFC 0011: Charge-required battle hook
+
+## Status
+
+Proposed.
+
+## Motivation
+
+A battle-mechanics mod can change damage through `battle.damage` and register
+move effects, but it cannot conditionally skip the first turn of an existing
+charge move. In Gen 1, the engine decides and stores the charge continuation
+before any public effect callback can run. Reaching into `user.charging`,
+`user.chargeReady`, or generation-specific volatile state is private,
+checkpoint-fragile, and would require a mod to duplicate move-pipeline policy.
+
+Weather is the immediate example: a portable sun rule needs Solarbeam to
+resolve on selection while leaving Fly, Dig, PP use, hit resolution, animation,
+and secondary effects to the engine. The capability is generic and useful to
+other ruleset and move-mechanics mods.
+
+## Decision and plan extended
+
+This implements **D-AT-002: charge-stage policy remains mod authority through a
+generic guarded engine decision seam**. The consuming design is tracked in the
+Adaptive Trainers implementation plan,
+[`docs/superpowers/plans/2026-08-14-adaptive-trainers.md`](https://github.com/MaxTomahawk/gen1recomp-adaptive-trainers/blob/main/docs/superpowers/plans/2026-08-14-adaptive-trainers.md),
+Task 8. The delta follows the additive, guarded hook convention documented by
+Route B in `CONTRIBUTING-mods.md`; it contains no weather, move-id, trainer, or
+Adaptive Trainers policy.
+
+## Exact API delta
+
+Both the Gen 1 and Gen 2 battle engines add this guarded hook:
+
+```lua
+mod.hooks:wrap("battle.charge_required", function(next, ctx)
+  -- ctx = {
+  --   battle = live battle controller,
+  --   user = attacking battler,
+  --   target = defending battler,
+  --   move = merged move record,
+  --   charge = true,
+  --   isCalled = false,
+  -- }
+  if should_resolve_now(ctx) then return false end
+  return next(ctx)
+end)
+```
+
+The call site is the initial-use charge decision, after announcement and PP
+handling but before charge state, invulnerability, charge animation, or charge
+text is created. It runs only when the active engine rules would otherwise
+require a charge. It does not run on the release turn. Returning exactly
+`false` skips that initial charge and continues through the engine-owned move
+pipeline. Any other downstream return preserves the charge. `isCalled` is true
+when Metronome or Mirror Move selected the move.
+
+Gold keeps its native sun decision first, so Solarbeam in native sun already
+requires no charge and does not invoke the hook. Gen 1 link battles use the
+shared Gen 1 move pipeline and therefore receive the same seam; normal link
+mod-compatibility rules continue to govern deterministic peers.
+
+The hot path first calls `Runtime.wantsHook("battle.charge_required")`. With no
+subscriber, no hook payload table is allocated and the existing branch runs
+unchanged.
+
+## Migration and compatibility
+
+Existing mods change nothing. The hook name and payload are additive. With no
+wrapper installed, Red, Blue, Yellow, Gold, and Silver retain their previous
+charge state, PP use, text, animation, accuracy, damage, and native weather
+behavior. Existing charge-move data and effect records require no migration.
+
+A mod adopting the seam should call `next(ctx)` unless it deliberately wants to
+skip this charge. It should not mutate private charge fields or re-run the move.
+
+## Verification
+
+- `tests/engine/battle_charge_required.lua` exercises the real Gen 1 and Gen 2
+  engines through a sandboxed public mod, including false-to-skip, next-to-keep,
+  release-turn behavior, called-move PP semantics, shared payload shape, and
+  native Gold sun behavior.
+- The same test proves no-mod charge/release parity and replaces
+  `Runtime.call` with a sentinel behind a false `Runtime.wantsHook` guard.
+- `tests/engine/gate_hooks.lua` discovers the new catalog name and proves empty
+  chains preserve vanilla values and allocation behavior.
+- `tests/engine/gate_gen2_mod_api.lua` requires a guarded site in both
+  generations and keeps the compatibility reference list complete.
+
+## Deprecation etiquette
+
+Nothing is removed, renamed, superseded, or deprecated.
@@ -0,0 +1,140 @@
+# RFC 0012: `applyShare`'s announce argument on Gen 2
+
+## Status
+
+Proposed.
+
+## Motivation
+
+`battle.exp_award` hands a mod `ctx.applyShare(mon, split, announce)` on both
+generations. On Gen 1 the third argument decides whether the mon's GainedText
+box is printed (`src/battle/BattleState.lua`, `if announce then`), which is how
+a mod that pays the whole party prints **one** summary line instead of a box
+per recipient.
+
+Gold accepts the argument and ignores it, as its own comment above the hook
+call says. So the same mod source, running the same code, prints one line on
+Red and six on Gold — one for the participant plus one for every bench mon it
+paid.
+
+This is not hypothetical. The [Exp Share](https://github.com/ShaneMcGovernIE/exp_share)
+mod declares `"games": ["gen1", "gen2"]` and its description promises "a single
+shared-exp line instead of one message per Pokemon". It passes `true` for the
+fighters and `nil` for the bench, exactly as the Gen 1 seam asks. On Gold every
+one of those `nil` calls announces anyway, so a five-mon party turns every KO
+into six boxes to click through.
+
+There is no mod-side fix. The announcement is emitted inside
+`Battle:giveExperiencePass`, behind no hook, and a mod cannot ask for silence
+because the argument that means "quietly" is discarded. The only workaround is
+to intercept the battle's event queue afterwards and delete the boxes, which is
+what a mod written for this had to do — a mod reaching into engine internals to
+undo something the public seam should never have done.
+
+## Decision and plan extended
+
+This does not add a seam. It finishes one: `battle.exp_award` is documented as
+"the same hook `BattleState:awardExp` calls on Gen 1 and with the same ctx",
+and `docs/mod-api-gen2-compat.md` lists it among the hooks shared with Gen 1.
+The third `applyShare` argument is the one part of that ctx whose meaning did
+not survive the crossing, so the promise the catalog already makes is what this
+change delivers.
+
+The delta follows Route B's additive, guarded convention in
+`CONTRIBUTING-mods.md`: nothing is renamed, nothing is removed, and no mod that
+exists today changes behaviour.
+
+## Exact API delta
+
+`ctx.applyShare(mon, split, announce)` on Gen 2 now reads `announce`:
+
+| Call | Gen 1 | Gen 2 before | Gen 2 after |
+|---|---|---|---|
+| `applyShare(mon, split)` | silent | announces | **announces** (unchanged) |
+| `applyShare(mon, split, nil)` | silent | announces | **silent** |
+| `applyShare(mon, split, false)` | silent | announces | **silent** |
+| `applyShare(mon, split, true)` | announces | announces | announces |
+| `applyShare(mon, split, "expAll")` | announces | announces | announces |
+
+The argument is honoured **only when it is actually passed**, decided by
+argument count rather than by value:
+
+```lua
+local function applyShare(mon, split, ...)
+  local announce = ...
+  local silent = select("#", ...) > 0 and not announce
+  ...
+end
+```
+
+`select("#", ...)` counts an explicit `nil`, so `applyShare(mon, split)` and
+`applyShare(mon, split, nil)` are distinguishable — and they have to be, because
+the first is a Gen 2-era call written against a seam that always announced, and
+the second is a deliberate "pay this one quietly".
+
+Only the `{ kind = "experience" }` event is affected. A silent award is still a
+whole award: the exp, the stat exp, the `battle.exp_gained` event, the
+`grew to level` line, learned moves and the interactive forget-a-move prompt all
+happen exactly as before, in the same order.
+
+Internally `Battle:giveExperiencePass` takes a sixth parameter, `silent`. It
+defaults to announcing, so both of the cart's own passes are untouched.
+
+## Migration and compatibility
+
+**Existing mods change nothing.** A Gen 2 mod calling `applyShare(mon, split)`
+gets the behaviour it was written against. A Gen 1 mod is untouched: no Gen 1
+file is modified. The v1 surface — `content.X:register/override/get`,
+`events:on`, `hooks:wrap`, `mod.log`, `mod:read`, the manifest v1 fields and
+`pokemon.before_give` — is not involved; `mods/example_mew_starter` neither
+calls this seam nor loads differently.
+
+A mod that wants parity passes the argument explicitly, which is what the Gen 1
+seam has always documented. Exp Share already does, and needs no edit to get
+its own README's behaviour on Gold.
+
+One residual difference is deliberate and now documented rather than silent: an
+**omitted** third argument still means "silent" on Gen 1 and "announce" on
+Gold. Closing that would change what an existing Gen 2 mod prints, which Route
+B rejects. Passing the argument makes the two generations agree, so the rule an
+author needs is one sentence: *say what you mean and both games do the same
+thing.*
+
+## Verification
+
+- `tests/gen2_exp_share_test.lua` grows two sections and 14 checks, and the 23
+  checks it already had are unchanged — which is itself the vanilla-parity
+  evidence for this file.
+  - **The no-mod test.** With nothing subscribed to `battle.exp_award`, a solo
+    participant still prints one line and the EXP.SHARE double pass still
+    prints both. The hot path is unchanged: `Runtime.wantsHook` still guards
+    the ctx allocation, and `vanillaAward` never passes `silent`.
+  - **The mod-API test.** The seam is driven through `hooks:wrap` on a real
+    `Runtime.install`ed bus, not by calling internals: the omitted argument
+    announces, an explicit `nil` and an explicit `false` are silent, a truthy
+    value (including Gen 1's `"expAll"`) announces, the exp and stat exp paid
+    are identical either way, and no `experience` event leaks into the queue on
+    a silent pass.
+- `tests/engine/gate_gen2_mod_api.lua` (943 checks),
+  `tests/engine/gate_hooks.lua` (493) and `tests/engine/gate_events.lua` (529)
+  pass unchanged; `battle.exp_award` was already in the shared catalog, so no
+  gate list moves.
+- `tests/gen2_battle_test.lua` (690), `gen2_battle_end_test.lua` (32),
+  `gen2_battle_items_test.lua` (99), `gen2_badge_boosts_test.lua` (34) and
+  `gen2_battle_loss_test.lua` (15) pass unchanged.
+
+## Docs with the change
+
+`docs/mod-api-gen2-compat.md` gains the `applyShare` reading beside the
+existing `battle.low_health_alarm` payload note, in the same section that lists
+`battle.exp_award` as shared — including the argument-count rule and the
+residual difference above.
+
+No registry or schema field changes, so `src/mods/Schemas.lua` is untouched and
+`tools/gen_registry_docs.lua` has nothing new to emit.
+
+## Deprecation etiquette
+
+Nothing is removed, renamed, superseded or deprecated. The two-argument call is
+not deprecated either — it keeps its current Gen 2 meaning permanently, and the
+docs name the explicit form as the one that behaves the same on both games.
@@ -0,0 +1,142 @@
+# RFC 0013: Conditional map occupancy and active-block reads
+
+## Status
+
+Proposed.
+
+## Motivation
+
+The Gen 1 Vermilion Dock script correctly ejects a player who enters after the
+S.S. Anne has departed. A content mod can add a city-side route back to that
+empty harbor, but it cannot preserve the dock visit: replacing the complete
+dock handler would discard vanilla behavior and peer handlers, while an added
+handler cannot cancel the base handler's ejection.
+
+A mod that changes one active map block also needs to prove that it is looking
+at the expected Red, Blue, or Yellow layout before it acts. `mapOverview()` is
+intentionally presentation-oriented and does not expose block identity.
+Requiring internal `Map` state or generated ROM data would cross the public mod
+boundary and make a wrong-version edit difficult to fail closed.
+
+## Decision and plan extended
+
+This extends Route B in `CONTRIBUTING-mods.md`: new behavior is additive,
+ordinary hook composition remains the authority, an empty hook chain is a
+provable no-op, and mods receive copied or scalar data rather than mutable
+engine state. It supports the approved Mew-under-the-truck implementation plan
+without adding any Mew-specific rule, asset, flag, or content to the engine.
+
+## Exact API delta
+
+### `map.occupancy_allowed`
+
+The post-departure `VERMILION_DOCK` script calls this hook after it replaces the
+ship blocks with water and immediately before it would display the departure
+message and warp the player to Vermilion City.
+
+A wrapper has this shape:
+
+```lua
+function(next, game, context) -> boolean
+```
+
+The context is a new table with these fields:
+
+| Field | Meaning |
+|---|---|
+| `mapId` | `"VERMILION_DOCK"` at this call site |
+| `reason` | Stable reason key `"ss_anne_departed"` |
+| `gameVersion` | Active save version (`red`, `blue`, or `yellow`) when present |
+| `x`, `y` | Current player cell coordinates when present |
+
+Vanilla returns `false`. The player remains only when the final chain result is
+exactly `true`. Absent, throwing, or malformed wrappers therefore preserve
+ejection. A wrapper composes by calling `next(game, context)` and returning
+true when either downstream or its own narrow rule permits occupancy. The hook
+does not replace `MapScripts` registration, merging, or dispatch, and does not
+change the departure flag or reconstruct the ship.
+
+As with every wrapper hook, a callback that does not call `next` intentionally
+owns the final answer and does not run lower-priority callbacks. Permission
+wrappers must call downstream to compose. A false, non-forwarding wrapper
+safely denies occupancy and can suppress downstream permission by this normal
+rule. A malformed final result also fails closed and cannot permit occupancy.
+
+The call is guarded by `Runtime.wantsHook`, so an empty chain allocates no
+context and follows the prior branch exactly.
+
+### `WorldAPI:activeBlockAt`
+
+Gen 1's public `mod.world` facade adds:
+
+```lua
+activeBlockAt(mapId, blockX, blockY) -> blockId
+                                      | nil, reason
+```
+
+`mapId` must equal the active map ID. Coordinates are finite, integral,
+zero-based block coordinates. A successful result is a numeric scalar copied
+from the active runtime map. The method never returns the map's mutable block
+array and never writes game or save state.
+
+Failure reasons are stable:
+
+| Condition | Reason |
+|---|---|
+| No active overworld map | `no overworld` |
+| `mapId` differs from the active map | `map is not active` |
+| Coordinate has the wrong type, is non-finite, or is fractional | `invalid block coordinates` |
+| Coordinate is negative or outside the active map | `block coordinates out of bounds` |
+| Active block data is absent or malformed | `block unavailable` |
+
+The block slot and the active map accessor must both contain the same valid
+nonnegative integer. Missing or sparse storage and inconsistent accessor data
+return `block unavailable`.
+
+Requiring the expected map ID and rejecting all ambiguous input lets a mod
+compare every cell in its version-specific signature before it calls an
+existing mutation API. Red, Blue, and Yellow each use their own loaded map
+data. Gold does not gain this method in this RFC.
+
+## Migration and compatibility
+
+Existing mods change nothing. No hook, event, registry, manifest field, save
+field, map handler, or WorldAPI method is removed or renamed. With no hook
+subscriber the departed-dock behavior is unchanged. Existing callers cannot
+invoke the new WorldAPI method accidentally.
+
+The occupancy answer is not persisted by the engine. Disabling or uninstalling
+a mod removes its wrapper through normal owner cleanup, so a later dock entry
+uses vanilla ejection. The engine writes no new save state and neither API
+returns or serializes ROM or save data.
+
+## Verification requirements
+
+The parity gate must prove:
+
+- vanilla departed-dock message and warp remain with no subscriber;
+- one permission wrapper can allow occupancy without removing the ship-erasure
+  work or any map handler;
+- multiple cooperative wrappers preserve downstream permission;
+- absent, throwing, nil, false, malformed, and non-forwarding hook answers fail
+  closed according to the normal wrapper-chain rule;
+- Red, Blue, and Yellow contexts keep their version identity separate;
+- disabling or removing the owner restores vanilla behavior without a save
+  migration;
+- `activeBlockAt` accepts only the active map and valid in-range integral
+  coordinates, returns a scalar, and never mutates map or save state; and
+- the test fixtures and resulting changes contain no ROM or save payload.
+
+The hook must be driven through a real public `hooks:wrap` chain. The block API
+must be exercised through a public `WorldAPI` instance. Tests must not replace
+the production map handler with a test-only implementation.
+
+## Docs with the change
+
+`docs/modding.md` documents both contracts, their failure behavior, the
+cooperative wrapper pattern, and the Gen 1-only block method. No registry or
+schema changes occur, so generated registry documentation is unchanged.
+
+## Deprecation etiquette
+
+Nothing is removed, superseded, or deprecated.
@@ -0,0 +1,158 @@
+# RFC 0014: Mod-driven world actors and adopted link sessions
+
+## Status
+
+Proposed.
+
+## Motivation
+
+A mod can already spawn a runtime object with `mod.world:spawnNpc` and can
+already start a link battle. It cannot make either of them behave like
+something the mod itself owns.
+
+Three walls, each of which stops a mode rather than inconveniencing it:
+
+**An actor cannot move on its own schedule.** The only public way to animate a
+spawned object is `Handle:scriptMove`, which queues onto
+`OverworldState.scriptMoves`. A non-empty `scriptMoves` is how the overworld
+knows a cutscene is running -- `handleInput` gates on it -- so anything
+animated that way freezes the player's controls for as long as it walks. That
+is correct for Oak marching into his lab and wrong for an ambient walker or a
+networked player's ghost, which move continuously and must not lock anyone out.
+
+**A spawned object cannot answer the A press.** Talking is resolved from the
+map's text tables by `TEXT_*` id. A runtime object has no id, so the vanilla
+path has nothing to say for it, and the mod that created it has no way to say
+anything either.
+
+**A link battle cannot ride a connection the mod already has.** `LinkState`
+owns pairing, so a mode that already has a socket to its peer must either open
+a second connection for the battle or reimplement lockstep. And when the
+battle ends, cable rules leave the real party untouched, so the damage exists
+only in the battle's own copies -- which are gone by the time the state
+unwinds. A mode built on link battles cannot learn what the fight cost.
+
+The immediate consumer is an overworld multiplayer mode, but nothing here is
+specific to it: the first two are wanted by any mod with an actor that moves
+itself, and the third by any mode that runs battles over its own transport --
+a tournament ladder, a draft, a gauntlet.
+
+## The decision it extends
+
+This adds nothing to the compatibility surface's shape; it extends the
+**additive, guarded seam convention** that Route B in `CONTRIBUTING-mods.md`
+documents, and is gated by the parity guarantee `tests/engine/gate_meta_coverage.lua`
+enforces ("21-testing-and-ci: a parity gate for every extension point"; M14).
+
+There is no in-repo D-number registry to amend; the consuming design lives
+outside this repository, as it did for RFC 0011.
+
+## Exact API delta
+
+### New hook: `world.talk`
+
+```lua
+mod.hooks:wrap("world.talk", function(next, ow, target)
+  -- ow     = the OverworldState raising it
+  -- target = the object on the faced cell
+  if mine(target) then
+    say(target)
+    return                    -- the mod answered; the text path is skipped
+  end
+  return next(ow, target)     -- anything else falls through unchanged
+end)
+```
+
+Call site: `OverworldState:interact`, on the branch that has already resolved
+an object on the faced cell (including across a counter) and confirmed it is
+not mid-step and not the Pikachu follower. It runs before the map's text
+tables are consulted. With no subscriber, `Runtime.call` invokes the vanilla
+fallthrough, which is a file-local function rather than a per-press closure,
+so an unhooked A press allocates nothing it did not allocate before.
+
+### New event: `link.battle_ended`
+
+```lua
+mod.events:on("link.battle_ended", function(ev)
+  -- ev = {
+  --   result     = "win" | "lose" | "draw" | "ended",
+  --   myParty    = lockstep copy of our party,
+  --   theirParty = lockstep copy of theirs,
+  --   peerName   = string,
+  --   role       = "host" | "guest",
+  -- }
+end)
+```
+
+Call site: `LinkState:update`, in the `battleRunning` stage, once the battle
+state has been popped and before `exitWith` unwinds the link stack. Guarded by
+`Runtime.wants("link.battle_ended")`, so with no subscriber no payload table
+is allocated and the branch runs exactly as before.
+
+The party copies are the point of the event. They are the lockstep records the
+battle actually fought with, which is where the damage lives under cable rules.
+
+### New `WorldAPI` handle methods
+
+```lua
+handle:stepNow(dir)        --> true when the step started
+handle:canStep(dir)        --> would stepNow land somewhere legal?
+handle:placeAt(x, y, dir)  --> snap, no animation, clears a step in flight
+handle:isMoving()          --> true while a step is animating
+handle:setPassable(flag)   --> may the player walk through this object?
+```
+
+`stepNow` sets the same per-tile state `scriptMove` does, without the queue and
+therefore without the input lockout. It does **not** consult collision: the
+intended caller is replaying a move already decided elsewhere (validated on a
+peer, or authored), and re-judging it locally would let two copies of the same
+actor disagree about where it is. `canStep` is the separate opinion for callers
+that want it. `setPassable` sets the flag `Collision.occupied` already honours
+for Yellow's companion Pikachu; a passable object still draws and still talks.
+
+### Two supporting changes
+
+`Game:startNewGame(opts)` -- the title screen's NEW GAME closure, made callable,
+with `opts.intro = false` to land directly in the world. A mode that issues its
+own starting state has no use for the intro cutscene.
+
+`CodeEntry.new(shape)` -- accepts an optional `{ length =, charset = }`, so the
+slot-scrub widget that enters a link code can also carry a room code or a
+host:port address. Called with no argument it is byte-for-byte the previous
+widget.
+
+## Migration and compatibility
+
+**Existing mods change nothing.** Every item above is a new name or a new
+optional argument; no existing name, payload, signature, or default changes.
+
+The v1 surface is unaffected: `content.X:register/override/get`, `events:on`,
+`hooks:wrap`, `mod.log`, `mod:read`, the manifest v1 fields and
+`pokemon.before_give` all behave as before. `mods/example_mew_starter` -- api 1,
+`category = "GAMEPLAY"`, whole-species copy -- loads unchanged, which
+`tests/run_modkit.lua` proves on every run.
+
+With no subscriber to either seam, Red, Blue, Yellow, Gold and Silver behave
+exactly as they did: the A press reaches `talkTo`, the link battle unwinds
+without building an event payload, and no handle method is reachable unless a
+mod calls it.
+
+## Verification
+
+- `tests/modkit/cases/world_talk.lua` drives the real `OverworldState:interact`
+  path. It asserts the unhooked build first (the A press reaches `talkTo`),
+  then that a mod owning the object suppresses the text path by not calling
+  `next`, that an object the mod ignores still falls through, and that an
+  object mid-step raises no hook at all.
+- `tests/modkit/cases/link_battle_ended.lua` drives the real `LinkState:update`
+  path. It asserts that with nothing subscribed the event is not wanted (so no
+  payload is built) and the battle still unwinds, then that a subscriber
+  receives the result, the role, the peer name and both party copies including
+  the damage the real party never took, from both sides of the cable.
+- `tests/engine/gate_hooks.lua` and `tests/engine/gate_events.lua` walk the live
+  catalog, so both seams are parity-gated structurally; `gate_meta_coverage`
+  passes 208/208 with both names covered and no DEBT entry added.
+
+## Deprecation etiquette
+
+Nothing is removed, renamed, superseded or deprecated.
@@ -0,0 +1,123 @@
+# RFC 0016: Engine-owned field residual descriptors
+
+## Status
+
+Proposed.
+
+## Motivation
+
+Battle-rule mods can keep deterministic data-only state in the public battle
+field and observe `battle.turn_ended`, but that event fires after the engine's
+residual and faint pipeline. A listener cannot safely deal end-of-round field
+damage: directly changing live HP bypasses bar drains, faint messages,
+experience, replacements, double-faint resolution, and checkpoint continuation.
+Putting callbacks into `battle.field` is also rejected by the checkpoint
+serializer, correctly, because executable state is not save-safe.
+
+## Decision and plan extended
+
+This implements **D-AT-004: public engine-owned field residual execution**, the
+consuming decision required by Adaptive Trainers capability `ENGINE-FIELD-
+RESIDUALS`. The plan is
+[`docs/superpowers/plans/2026-08-14-adaptive-trainers.md`](https://github.com/MaxTomahawk/gen1recomp-adaptive-trainers/blob/main/docs/superpowers/plans/2026-08-14-adaptive-trainers.md),
+Task 8. The engine delta defines only a generic end-of-round extension point;
+it contains no weather names, immunities, damage formula, trainer identity, or
+Adaptive Trainers policy.
+
+## Exact API delta
+
+Add the guarded Gen 1 hook:
+
+```lua
+mod.hooks:wrap("battle.field_residual", function(next, context)
+  local rows = next(context)
+  rows[#rows + 1] = {
+    side = "enemy",
+    amount = 7,
+    message = context.battlers.enemy.name .. " is buffeted!",
+  }
+  return rows
+end)
+```
+
+The hook runs once during an undecided battle's end-of-round processing, after
+vanilla status residuals and before field/side token expiry and
+`battle.turn_ended`. With no subscriber, the guarded site builds no context and
+changes nothing. Vanilla contributes an empty list.
+
+`context` is `{ field, battlers, turn }`. `field` is a strictly data-only view
+with the same `{ weather, tokens }` shape captured by battle checkpoints. Its
+recursive projection retains raw tables and finite numbers, strings, and
+booleans under scalar keys. It strips metatables and omits functions, userdata,
+threads, unsupported keys, and cyclic edges. Thus it exposes neither
+`field.sides` nor a graph or executable callback back into live engine state.
+`battlers.player` and `battlers.enemy` are detached snapshots with `{ side,
+name, hp, maxHp, types, vanished }`. Changing either detached view cannot
+change the live battle. `turn` is the current Gen 1 turn counter.
+
+A result row is `{ side = "player"|"enemy", amount =
+positive_finite_integer_number, message = optional_string }`. Numeric strings,
+zero, negatives, fractions, NaN, infinities, malformed sides, and non-string
+messages fail closed. Damage is clamped to current HP. The engine owns
+mutation, HP-bar drain rows, and its existing faint pipeline. It applies every
+accepted row before scheduling newly fainted battlers. If this hook batch
+terminally faints the player with no healthy reserve, it queues only the player
+faint authority, so descriptor order cannot race a blackout against an enemy
+EXP/replacement path. Otherwise it schedules newly fainted battlers in fixed
+player/enemy order. This precedence is scoped to this hook response; native
+faint paths, including `enemyMonFainted`, keep their existing no-hook behavior.
+Wrappers compose by calling `next(context)` and appending their own rows.
+Callbacks are not part of the descriptor contract and hook functions are never
+stored in the battle.
+
+Gold already owns native weather and a generation-specific between-turn order;
+this first additive call site is Gen 1-only. A future Gold site must keep the
+same context and descriptor contract and choose its native ordering explicitly.
+
+## Migration and compatibility
+
+Existing mods change nothing. No hook name or payload changes. With no wrapper,
+Gen 1 performs the same residual, token, event, and faint work as before,
+including native simultaneous-faint resolution, and allocates no context. Gen
+2 is unchanged. Existing and new checkpoints keep
+serializing only the data stored in `battle.field`; hook callbacks remain
+process-local loader state and are never serialized.
+
+The v1 surface remains unchanged: `content.X:register/override/get`,
+`events:on`, `hooks:wrap`, `mod.log`, `mod:read`, manifest v1 fields, and
+`pokemon.before_give` keep their existing behavior.
+
+## Verification
+
+- The catalog hook parity gate proves null and live-empty buses return the
+  vanilla list unchanged.
+- A sandboxed fixture mod exercises the seam through `mod.hooks`, verifies the
+  detached checkpoint-shaped context, applies damage, and reaches the engine
+  faint pipeline.
+- Engine validation tests cover strict number validation (including numeric
+  strings, NaN, infinities, zero, and negatives), nested mutation isolation,
+  omission of functions/userdata/threads/cycles and metatables from the public
+  field projection, optional messages, non-table results, clamping, and
+  settled-battle suppression.
+- Both descriptor orders are driven through queue completion for a simultaneous
+  terminal residual. Each proves player blackout loss with no EXP event,
+  enemy replacement, or replacement UI.
+- A disabled-bus sentinel proves the guard performs no `Runtime.call` or field
+  context construction. An ordering probe proves the enabled hook runs after
+  vanilla status residuals and before token expiry and `battle.turn_ended`.
+- A no-hook native regression proves a simultaneous zero-HP state still enters
+  the pre-existing enemy-faint EXP and win authority outside this hook batch.
+- Capture/restore/capture evidence proves checkpointed field state round-trips
+  while the enabled process-local hook remains installed and callable.
+
+## Docs with the change
+
+`docs/modding.md` documents the Gen 1 timing, detached payload, descriptor
+validation, simultaneous-terminal result, and checkpoint boundary.
+`docs/mod-api-gen2-compat.md` records that Gold does not yet expose the hook.
+No registry or schema changes are involved, so generated registry docs do not
+change.
+
+## Deprecation etiquette
+
+Nothing is deprecated. The hook is additive.
@@ -0,0 +1,102 @@
+# RFC 0017: Public mod developer-mode signal
+
+## Status
+
+Proposed.
+
+## Motivation
+
+The loader already derives a boot-time developer-mode flag for its permission
+diagnostics and headless test seam. Gen 1's `Game` independently derives a
+similarly sourced flag for its console and hot reload. A sandboxed mod cannot
+read either one. `mod.commands` can register a diagnostic command but cannot
+say whether the current boot is a developer boot. `mod.exports` only publishes
+values to other mods. `game.ready` fires after entry registration and carries
+only the game. `mod.options` is player configuration, not engine mode, and
+`mod.log` logs unconditionally. The pre-sandbox compatibility
+`os.getenv("POKEPORT_DEV")` deliberately returns `nil`, because the process
+environment is hidden from mods.
+
+The concrete consumer is **Adaptive Trainers**. Its approved Chapter 30 and
+Phase H require trainer, boss, Rival, and League diagnostic views plus
+seed-label tracing to exist only when `POKEPORT_DEV` is active. Without a
+public signal, the mod must either ship those registrations in production,
+misuse a player option, or import loader/Logger internals. All three violate
+the approved observability boundary or the sandbox/public-API policy.
+
+## Decision and plan extended
+
+This implements **D-AT-005: diagnostics and seed tracing are admitted only by
+the engine's developer-mode decision**. The consuming design is tracked in the
+Adaptive Trainers implementation plan,
+[`docs/superpowers/plans/2026-08-14-adaptive-trainers.md`](https://github.com/MaxTomahawk/gen1recomp-adaptive-trainers/blob/main/docs/superpowers/plans/2026-08-14-adaptive-trainers.md),
+Task 9. The engine delta is generic and contains no trainer, balancing,
+diagnostic-layout, seed-label, or Adaptive Trainers policy.
+
+## Exact API delta
+
+Every sandboxed mod object adds one field:
+
+```lua
+mod.developer -- boolean
+```
+
+The loader copies its existing `dev` decision into this field before invoking
+the mod's entry chunk. It is therefore available for load-time registration:
+
+```lua
+if mod.developer then
+  mod.commands:register("my_mod:diagnostics", diagnostics_command)
+end
+```
+
+The value is a plain boolean snapshot, not a loader reference or environment
+facade. `false` is the normal player-build answer. `POKEPORT_DEV=1` and the
+`--developer` command-line path make the loader flag true; on Gen 1 those inputs
+separately make `Game`'s own developer flag true for its console and hot
+reload. The loader's existing injected `opts.dev` test seam changes only the
+loader flag and diagnostics, not `Game` or its hotkeys. It grants no permission
+and does not expose environment variables. The answer is fixed for the life of
+that loader; changing a field on a mod's own table cannot change engine mode.
+
+The field is generation-independent and has identical semantics on Red, Blue,
+Yellow, Gold, and Silver. Gold and Silver do not gain Gen 1's developer console
+or hot-reload hotkeys from this field.
+
+## Migration and compatibility
+
+Existing mods change nothing. `mod.developer` is additive, requires no
+permission, and does not bump the integer mod API. Existing API-v1 and API-v2
+entry chunks receive one extra scalar field and retain all prior fields and
+methods unchanged. No name is removed or shadowed.
+
+With no mods installed, `Loader:_api` is never called, so the delta allocates no
+mod object and changes no data, save, options, event, hook, command, or file.
+With mods installed in a normal boot, the new field is `false` unless an author
+explicitly reads it. Existing registration and logging behavior is unchanged.
+
+An adopting mod should gate developer-only registrations and verbose logging
+directly on `mod.developer`. Player-facing behavior belongs behind
+`mod.options`, not this signal.
+
+## Verification
+
+- `tests/engine/mod_developer_mode_test.lua` loads a real sandboxed mod through
+  the public SDK with developer mode both on and off. It proves the boolean is
+  available during entry execution and that the same source registers its
+  diagnostic command only for the developer load. It also covers the
+  command-line global path and a Gen 2 load.
+- `tests/engine/mod_developer_mode_parity_test.lua` is the separate no-mod
+  parity suite. It proves both developer answers discover no mods, create no
+  files, and leave injected vanilla data unchanged. It also loads an unchanged
+  API-v1 probe and verifies identity, `mod:read`, exports, and options behavior.
+- The full ROM-free engine and modkit tiers remain the compatibility proof for
+  `content.X:register/override/get`, `events:on`, `hooks:wrap`, `mod.log`,
+  `mod:read`, manifest v1 fields, and `pokemon.before_give`.
+
+No registry or schema changes are involved, so generated registry documentation
+is unaffected.
+
+## Deprecation etiquette
+
+Nothing is removed, renamed, superseded, or deprecated.
@@ -0,0 +1,673 @@
+# ShaderFX: runtime slang shader presets
+
+ShaderFX plays real libretro `.slangp` shader presets over the finished frame.
+It replaced `src/render/GBCFX.lua`, a hand-ported fixed four-level effect, with
+a picker: any preset the player drops in a folder, or any preset pulled from
+the RetroArch buildbot, can be selected and run. Engine:
+`src/render/ShaderFX.lua` (discovery, download, translation call, pass-graph
+runtime, render entry point), `src/render/ShaderFixup.lua` (GLSL rewrites),
+`src/render/ShaderSourcePatches.lua` (pre-translation source patches),
+`src/core/Sensors.lua` (accelerometer and gyroscope), `src/ui/ShaderFXScreen.lua`
+(the picker), `src/ui/ShaderFXParamsScreen.lua` (per-preset parameter editor),
+`tools/shaderfx-bridge/` (the Rust translator). Call sites:
+`src/render/Renderer.lua` (Gen 1) and `src/core/Game2.lua` (Gen 2), both at the
+end of the frame. Drivers: `tests/drivers/gold_shaderfx_zoom_sizing_test.lua`,
+`tests/drivers/gold_shaderfx_menu_black_crop_test.lua`.
+
+This is first-party engine code, not a mod. It calls the native translator
+directly through `ffi.load`, with no `Sandbox.lua`, no `native` permission
+declaration, and no mod boundary. Mods do not get that, and the distinction is
+deliberate: the upstream maintainer will not accept `native` in mods.
+
+## What a player sees
+
+**OPTIONS** carries two rows, `SHADER FX` and `SHADER FX 2`. Each opens the
+same pushed list screen (`ShaderFXScreen`) on a different slot. The list is
+`OFF`, then every `.slangp` found on disk, then a permanent `DOWNLOAD SHADERS`
+action row at the bottom.
+
+A preset that has never been translated draws muted with a `CONVERT` hint on
+the right. `A` on that row translates it in place and stays open: converting is
+a preparation step, not a selection. `A` on a converted row activates it,
+persists the choice, and closes. `SELECT` on a converted row opens
+`ShaderFXParamsScreen`, which lists every `#pragma parameter` the preset
+declares and lets the player step each one (`A` wraps, Left/Right clamp,
+`SELECT` resets one row, `START` resets all behind a confirm).
+
+Presets live in a plain OS folder, `shaders/` under the portable base directory
+when running portable (`SaveData.portableBaseDir()`, the SD-card convention the
+Anbernic pack uses, see `docs/anbernic-rg34xxsp.md`) and otherwise under LOVE's
+save directory. `ShaderFX.list()` scans it recursively, so a shader pack keeps
+whatever nested layout it shipped with. These are real filesystem paths rather
+than `love.filesystem` virtual paths on purpose: the native translator does
+plain `std::fs` reads and knows nothing about LOVE's mounts, and neither do the
+LUT loads.
+
+Persisted state, all in `save.options`:
+
+| Key | Meaning |
+| --- | --- |
+| `shaderfx` | main slot's preset name, or absent for OFF |
+| `shaderfxSecondary` | secondary slot's preset name |
+| `shaderfxParams[name][paramId]` | one preset's edited pragma values |
+
+`POKEPORT_SHADERFX=<name>` activates a preset in the main slot for scratch
+harnesses that never call `ShaderFX.applyOptions`. It is a stand-in that
+predates the real OPTIONS row; `applyOptions` marks itself as having run so the
+env var can never later override a real player choice, including a real choice
+of OFF.
+
+One quiet behavior worth knowing about: if a slot wants a real preset while
+PERFORMANCE is still on AUTO, and AUTO would resolve to a tier that caps
+ShaderFX off, `ShaderFX.applyOptions` pins PERFORMANCE to `HIGH`. Without it
+the saved choice was force-deactivated a few lines later on every boot, which
+looks identical to "the setting does not save" from the player's side. On
+Android and iOS that is the common case, because AUTO always resolves to
+`balanced` there. It never touches an already-explicit performance choice and
+never un-escalates.
+
+## The five stages
+
+| Stage | Owner |
+| --- | --- |
+| Fetch | `ShaderFX.list`, `ShaderFX.downloadPresets`, `ShaderFX.installDownloaded` |
+| Translate | `tools/shaderfx-bridge/` via `ShaderFX.translate` |
+| Fixup | `src/render/ShaderFixup.lua` |
+| Cache | `ShaderFX.convert` writes, `ShaderFX.load` reads |
+| Run | `ShaderFX.runChain` / `runPass` / `ShaderFX.render` |
+
+### Fetch
+
+Two acquisition paths, and they land in the same place. A player can copy a
+shader pack into `shaders/` by hand, or press `DOWNLOAD SHADERS`, which fetches
+`https://buildbot.libretro.com/assets/frontend/shaders_slang.zip` (the same
+~54 MB archive RetroArch's own "Update Shaders" entry pulls) through
+`src/net/Fetch.lua`, the curl-on-a-`love.thread` transport the self-updater and
+mod index already use.
+
+Downloaded presets are *not* pre-converted. The buildbot is RetroArch's asset
+mirror and has no notion of this project's cache format, so a downloaded preset
+goes through the same `CONVERT` row a hand-copied one does. Every platform
+ships both convert and use; there is no asymmetry to work around.
+
+Repeat downloads are conditional. The zip itself is deleted right after
+extraction, so what is cached instead is the buildbot's own ETag
+(`shaderfx_buildbot.etag`), replayed as `If-None-Match`. The server answers a
+match with 304 and no body, and curl writes no file at all in that case, so
+`installDownloaded(notModified)` short-circuits before touching the filesystem
+and reports "already up to date" rather than "FAILED".
+
+The interesting part is what gets extracted. `handheld/` is not self-contained:
+its 78 presets carry 101 references that escape the folder (color-mod LUTs
+into `../shaders/color/`, console-border helpers into `../../reshade/`, shared
+motion-blur and misc helpers, a shared `stock.slang`) across roughly 40 of
+them. Extracting `handheld/` alone silently breaks about a third of its own
+list; extracting the whole zip drags in ~5600 files of CRT, arcade and console
+content nobody asked for. So `extractClosure` walks the real file-level
+dependency closure in Lua before a single file is copied, the same
+`#reference`-closure idea librashader applies internally, done up front because
+deciding what to copy has to happen before the translator ever sees these
+files. Against this zip that is 207 files and about 9.5 MB with zero broken
+references. The closure seeds from `KEPT_PRESETS`, a curated shortlist rather
+than all 78, after most of `color-mod/` and `console-border/` turned out either
+irrelevant (color-only, no LCD effect) or broken for this project. That list
+is a temporary trim pending wider testing and is expected to change.
+
+Two mechanical details in that walk that are easy to get wrong a second time.
+`extractRefs` tries a quoted `key = "path"` match per line first, with an
+unrestricted `[^"]+` capture, because the closing quote is an unambiguous
+delimiter and real packs ship paths with spaces and parentheses in them
+(`"shaders/handheld/color-mod/Game Boy (Color).slang"`); only a line with no
+quoted match falls back to a conservative character class, since an unquoted
+path has no delimiter to trust past. And `love.filesystem.write` does not
+create intermediate directories, so each destination directory is created once
+before anything is written into it; without that, every file under a subfolder
+`handheld/` never had before was silently dropped while flat writes succeeded.
+Cleanup is equally literal: `love.filesystem.unmount()` takes the archive path
+originally passed to `mount()`, not the mountpoint. Called with the mountpoint
+it returns false, leaves the zip's handle open, and the following `remove()`
+silently fails too, so every download used to leave 54 MB on disk forever.
+
+### Translate: the native bridge
+
+`tools/shaderfx-bridge/` is a small Rust crate (`spike`) that builds a cdylib
+named `librashader_bridge`. It wraps `librashader-presets`,
+`librashader-preprocess` and `librashader-reflect` behind a two-function C ABI:
+
+```
+char* librashader_translate_preset(const char* preset_path, int es);
+void  librashader_free_string(char* s);
+```
+
+It returns a JSON `TranslateResult`: `pass_count`, a `passes` array (each with
+its emitted `vertex`/`fragment` GLSL, `filter`, `wrap_mode`, `scale_x`/
+`scale_y`, its own `#pragma parameter` declarations, a classified `samplers`
+list and a classified `size_uniforms` list), the preset's `textures` (LUTs,
+with resolved absolute paths and filter/wrap settings), its
+`parameter_overrides`, and an `error` field.
+
+**What the bridge is not.** No librashader runtime backend is linked in, for
+any API: no GL, Vulkan, D3D or Metal crate is a dependency, and no live
+graphics context is ever touched. It is the translation step only. LOVE still
+owns every draw call, every canvas and every shader object. The bridge hands
+back text and metadata and nothing else.
+
+**When it is called.** Only from `ShaderFX.convert()`. Translation is ahead of
+time, not just in time. `ShaderFX.load()`, `ShaderFX.activate()`, boot-time
+reactivation of a saved choice and every frame of `ShaderFX.render()` read the
+cached artifact and never call the library. An entry with no cached artifact
+fails `activate()` loudly instead of silently live-translating.
+
+The classification is done with librashader's real semantics resolution rather
+than name matching on the Lua side, and that matters for correctness, not just
+tidiness. Sampler classification uses `ShaderSemantics::create_pass_semantics`
+plus the `TextureSemanticMap` lookup (explicit alias and LUT-name entries
+first, then the built-in `Source`/`Original`/`OriginalHistoryN`/`PassOutputN`/
+`PassFeedbackN` conventions), so a pass reachable only by its real `.slangp`
+alias resolves. The per-pass convenience API only registers the alias of the
+pass being compiled, so the bridge mirrors upstream's `insert_pass_semantics`
+loop and builds a preset-wide alias map first; without that,
+`ds-hybrid-scalefx.slangp`'s pass 2 sampling `scalefx_pass0` by alias, with no
+`PassOutput1`-shaped name anywhere, can never resolve. Size-uniform
+classification runs the same resolution over the pass's `uniform_semantics`
+map, which also covers shapes (`PassFeedbackSizeN`, `UserSizeN`) that no
+present preset uses but that the convention allows.
+
+The `es` flag picks the emitted dialect: 1 for GLSL ES 1.00 (mobile, LOVE's ES
+dialect), 0 for GLSL 1.20 (LOVE's desktop dialect). `ShaderFX` picks it from
+`love.system.getOS()`, and the same function decides which dialect
+`validateShader` is asked about at run time, so the two always agree. Convert
+and render always happen on the same device; **artifacts are not portable
+across platforms**.
+
+One class of fixup has to happen in the bridge rather than in `ShaderFixup.lua`,
+on the raw `.slang` text before SPIR-V compilation: `textureSize`,
+`texelFetchOffset` and `textureOffset` are all ES 3.00+ only, and spirv-cross
+refuses to *emit* them for an ES 1.00 target, failing the whole pass with
+`UnsupportedSpirv("textureSize is not supported in ESSL 100.")`. No GLSL text
+is ever produced for a later pass to patch, so `rewrite_essl100_gaps` rewrites
+the source first, and only for the ES target:
+
+- `textureSize(Tex, lod)` becomes a literal `ivec2(w, h)` when `Tex` is one of
+  the preset's declared static textures, with dimensions read straight out of
+  each PNG's IHDR chunk. A texture that is not one of those, or a non-literal
+  `lod`, is left alone so it fails as loudly as before instead of guessing.
+- `texelFetchOffset` and `textureOffset` become ordinary `texture()` calls at
+  the equivalent texel-centre UV, using the texture's own `<Tex>Size.zw`
+  reciprocal-size uniform. The containing block instance (`params`, `global`,
+  whatever) is discovered by scanning the source's own uniform block bodies,
+  never assumed. When a pass samples another pass purely through these calls it
+  may never declare that `<Tex>Size` uniform at all, so one is injected first,
+  before any byte offsets are computed.
+
+That last rewrite has an honest limit: `texture()` honours the sampler's wrap
+mode at out-of-range coordinates, which is not necessarily identical to
+`texelFetch`'s implementation-defined out-of-bounds behavior. Any edge-of-image
+discrepancy for passes whose offsets can leave the image is unmeasured.
+
+**Building it.** `cargo build --release` inside `tools/shaderfx-bridge/`.
+`ShaderFX` looks for the library, most specific first: the
+`LIBRASHADER_BRIDGE_DLL` environment variable, the source directory,
+`<source>/tools/shaderfx-bridge/target/release/`, the save directory, and
+finally the bare name handed to the system loader. Per-OS names are
+`librashader_bridge.dll` (Windows), `liblibrashader_bridge.dylib` or
+`librashader_bridge.dylib` (macOS), and `liblibrashader_bridge.so` or
+`librashader_bridge.so` (Linux and Android). Android resolves the bare name
+because the `.so` ships as an ordinary `jniLibs` entry, so `dlopen` finds it
+without a path. The desktop path is still a developer build sitting in cargo's
+output directory; nothing packages it next to a shipped game yet.
+`ShaderFX.canConvert()` reports whether the library resolved on this machine,
+and `ShaderFX.bridgeError()` says why not. Activating an already-converted
+preset never needs any of this.
+
+### Fixup
+
+`ShaderFixup.lua` mechanically rewrites the emitted GLSL into something LOVE
+will accept. librashader emits a standalone `void main()` /`gl_FragData[0]` /
+`gl_Position` shape (translated Vulkan GLSL); LOVE requires the `effect()` and
+`position()` convention and refuses a raw `main()`-shaped source outright. This
+is a targeted rewriter, not a GLSL parser, and every rule below exists because a
+real preset in the corpus failed without it. This list is the least guessable
+part of the whole feature.
+
+**`#version` line.** Stripped; LOVE prepends its own.
+
+**Array constructors.** SPIR-V Cross emits ES 3.0 array-constructor syntax
+(`const float _17[5] = float[](0.0, 1.0, ...)`) for compile-time array
+literals, which validation rejects with "arrayed constructor: not supported for
+this version". GLSL ES 1.00 has no array-constructor syntax at all. There are
+three real shapes in the corpus and each is handled: a `const` global (declared
+without an initializer at global scope, with per-element assignments relocated
+to the top of `main()`), a non-const local declaration with initializer
+(rewritten in place, since a function body can hold assignment statements where
+the literal was), and a bare reassignment of an array declared elsewhere (also
+in place). Splitting the element list needs `splitTopLevelCommas`, because a
+naive comma split breaks on any element containing its own parentheses
+(`vec2(-1.0, 0.0)`), and the outer capture needs `%b()` rather than a
+`[^%)]-` class for the same reason: the class stops at the first inner `)`, the
+whole match fails, and the literal passes through completely untouched.
+
+**Whole-array copies.** `float param_1[7] = coeffs;` is how SPIR-V Cross clones
+a function-parameter array before passing it on, since GLSL array arguments are
+by value. ES 1.00 has no whole-array assignment either, so it becomes a bare
+declaration plus an element-by-element copy. The size is known from the
+declaration, so no comma splitting is involved. This one only became reachable
+once the other array shapes stopped masking it in the same file.
+
+**Integer modulo.** ES 1.00 has no `%` operator, and SPIR-V Cross emits it
+anyway for an upstream integer-modulo op. `%` in GLSL is only defined for
+integer operands, so routing through float `mod()` and back is exact for the
+non-negative operands this shader family uses (rotation and orientation enum
+indices). Four patterns are tried in order (paren/paren, paren/bare,
+bare/paren, bare/bare) because SPIR-V Cross fully parenthesizes a compound
+operand and leaves a simple one bare, and the balanced form must be tried
+before a plain identifier can partially match. Seen live on
+`authentic_gbc`'s subpixel-rotation math.
+
+**Precision.** SPIR-V Cross hardcodes an unguarded `precision highp float;` /
+`precision highp int;` pair with no toggle. That is removed and replaced with
+the same guard the old hand-written `DotMatrix` port used: claim `highp` only
+where `GL_FRAGMENT_PRECISION_HIGH` says the driver actually offers fragment
+highp, and fall through to the stage default otherwise.
+
+**Struct flattening.** This is the big one. LOVE's `Shader:send` cannot address
+a member of a custom struct-typed uniform: neither an `INSTANCE.member` dot path
+nor sending the whole struct as a table works, both raise "Shader uniform '...'
+does not exist." librashader emits every pass's `#pragma parameter`s and size
+uniforms as exactly that kind of struct, so as shipped the output is unusable
+from LOVE, not merely inefficient. `flattenStruct` deletes the struct and its
+instance uniform and re-declares the members at top level. Scalar members are
+*packed* four at a time into synthetic `uniform vec4 LIBRA_PACKED_N;` slots,
+because GLSL ES 1.00 guarantees only 16 fragment uniform *vectors* and every
+scalar costs a whole one; `gb-pass4`'s pass 0 alone has 14 scalars, already over
+budget unpacked. Non-scalar members keep their own uniform, since packing an
+existing `vec4` saves nothing. Every `instance.member` reference is rewritten to
+`LIBRA_PACKED_N.x` (or `.y`/`.z`/`.w`), and a member whose original declared
+type was `int` or `bool` gets an explicit cast back on every read, since a
+packed slot only stores floats. Vertex and fragment declare identically ordered
+structs for the same parameters, so packing both with the same prefix assigns
+the same slot and component to the same parameter in both stages, and one
+`shader:send` reaches whichever stage uses it.
+
+Two ordering constraints inside that function are load bearing and look
+arbitrary from the outside. Packing must walk the members in the struct's own
+declaration order, because that order is what keeps the scalars in one
+contiguous run; an earlier version sorted them longest-name-first before
+packing and produced six packed vec4s instead of four on `gb-pass4`, blowing the
+budget. Substitution, separately, must go longest-name-first, so a replacement
+can never land as a substring inside a still-pending member name that shares a
+prefix. The two orders are separate copies of the list for exactly that reason.
+
+`Fixup.packValues` turns a flat `{name = value}` table back into the
+`{uniform = value_or_vec4}` shape the packed shader expects, per the manifest
+`flattenStruct` returned. `Fixup.countUniformSlots` counts declared uniform
+slots against that same 16-vector budget, samplers excluded. Its pattern uses
+`[%w_]+` rather than `%w+` because Lua's `%w` does not include underscore
+unlike regex `\w`, and every generated name here is full of underscores.
+
+**UBO blocks.** `LIBRA_UBO_FRAGMENT` and `LIBRA_UBO_VERTEX` have the identical
+problem and are flattened the same way, under a distinct `LIBRA_UBO_PACKED_`
+prefix so their groups cannot collide with the push block's numbering. `MVP` is
+the one special member: it is substituted directly to `transform_projection`
+instead of becoming a uniform, because "multiply the incoming vertex by it" is
+exactly what LOVE's `transform_projection` already is on a full-screen draw, and
+nothing would ever supply a value for it. An earlier version assumed the UBO
+block only ever carried `MVP` and deleted the whole declaration after
+substituting it. That is true only for presets that declare their parameters in
+a push-constant block; presets that use a UBO instead (many real handheld and
+console-border presets do) had every other member reference left dangling, and
+the driver then read `INSTANCE.PAR` as a swizzle, which is where the "undeclared
+identifier" and "unknown swizzle selection" errors on real Android hardware came
+from.
+
+**Fragment entry point.** `void main()` becomes LOVE's `effect()` signature.
+The parameter list is qualified by an `EFFECT_PREC` define rather than a literal
+precision, because LOVE forward-declares `effect()`'s prototype under its own
+header's precision default before this source runs, which can mismatch whatever
+the precision guard above raises the default to. `Fixup.PREC_HEADS` holds the
+two variants (`mediump`, then unqualified) and the caller tries them in order
+against `validateShader`, taking the first that passes.
+
+**Fragment output.** `gl_FragData` does not exist in LOVE's `effect()`
+convention, so every `gl_FragData[0]` occurrence is rewritten to a local
+`gbFragColor`, declared at the top of the function, with a single `return`
+appended before the closing brace. Rewriting *every* occurrence regardless of
+the operator that follows is necessary, not just symmetric with the vertex side:
+an earlier assign-then-return pair assumed one write at the very end of
+`main()`, which holds for most presets but not for ones like `ds-hybrid-sabr`
+that write once with `=` and later accumulate with `+=`. The `+=` statement
+passed through unconverted and collided with LOVE's own `gl_FragColor` write
+("Cannot use both gl_FragColor and gl_FragData"). A bare early `return;` is
+rewritten to `return gbFragColor;`, which holds the value assigned just before
+it on every real shape seen.
+
+**Vertex entry point.** `void main()` becomes `position(mat4
+transform_projection, vec4 vertex_position)`, the source's own `attribute`
+redeclarations of `Position`/`TexCoord` are dropped since LOVE supplies them,
+`gl_Position = X;` becomes `gbClipPos = X;` (named to share no substring with
+`Position`, or the next step would mangle it), and a `return gbClipPos;` is
+appended. The `Position` and `TexCoord` substitutions are frontier-matched
+whole identifiers (`%f[%w]...%f[%W]`), not blind substring replacements: real
+presets declare their own unrelated locals such as `vec2 vTexCoord;`, and a
+blind `gsub` turned that declaration into the invalid `vec2 vVertexTexCoord.xy;`
+(`dot.slangp` pass 0, a real driver "unexpected DOT" error).
+
+### Cache
+
+`ShaderFX.convert(entry)` is the only path that calls the bridge. It runs
+`ShaderSourcePatches.apply` first, translates, then serializes the decoded
+result to `ShaderFX.artifactPath(entry)`: the source `.slangp`'s own absolute
+path with the extension swapped to `.lua`, so the artifact sits next to the
+preset it came from. The file is a plain `return { ... }` chunk written by
+`serializeLua`, which handles the string/number/boolean/nested-table shape
+`Json.decode` produces. Array detection walks every key rather than trusting
+`#t`, since `#t` counts a trailing nil as absent and a sparse table can pass a
+naive length check by accident.
+
+`ShaderFX.load(entry)` `loadfile`s that chunk and builds a chain state. On
+failure it says "convert this preset first" rather than falling back to a live
+translation.
+
+**AOT rather than JIT** is the whole point of this stage. Translation is a rare,
+explicit, user-initiated action whose result is stable for a given preset and
+dialect, so paying for it once and writing the answer to disk keeps `ffi.load`
+and the native call off every activation, every boot and every frame. The cost
+is a staleness gap: `ShaderFX.isConverted()` is a plain "does the artifact file
+exist" check with no version or content stamp, and there is no explicit
+"reconvert" action in the UI. A preset converted by an older build never picks
+up a later translator fix on its own. This was seen on a real device, where
+`sunlight_shimmer.slangp`'s `Accelerometer` uniform never reached the shader
+because that device's cache predated the fix while `pixel_transparency`'s
+happened to be fresher. Two places compensate by reconverting unconditionally:
+`ShaderFXScreen`'s explicit selection of an already-converted row, and
+`ShaderFX.applyOptions` on every boot and options save. Both are human-paced,
+CPU-only work with no GPU compile, and neither is on the per-frame path.
+
+`ShaderSourcePatches.lua` sits just before translation and patches the raw
+`.slang`/`.inc` files *on disk*, because only librashader's own preset parser,
+reading the real files, discovers `#pragma parameter` lines and struct members;
+nothing downstream can add one. Patches are small, explicit, per-preset literal
+find/replace pairs (plain `find`, not `gsub`, since GLSL source is full of Lua
+pattern magic), re-applied idempotently on every convert so a buildbot
+re-download that replaces the upstream file wholesale does not quietly undo
+them. **The patch table ships empty on purpose and nothing registers one.** Its
+original use case, wiring gyroscope yaw into `sunlight_shimmer.slangp` as new
+`PT_YAW_*` pragma parameters, was reverted precisely because of the staleness
+gap above: a new pragma can only reach an artifact that gets reconverted, and at
+the time nothing forced one. The mechanism is kept for a future preset that
+genuinely needs a new declaration, but an already-wired engine-side channel is
+preferred whenever one exists.
+
+### Run: the pass graph
+
+`ShaderFX.activate(slot, entry, paramOverrides)` loads the artifact, layers the
+player's edited parameters over the artifact's own defaults, loads the preset's
+LUTs once, and snapshots the accelerometer rest pose. `ShaderFX.render` then
+runs the chain each frame.
+
+`newChainState` builds one instance of chain-local state per loaded preset,
+never module-global, so switching presets cannot leak a previous preset's
+canvases or dimensions. `ALL_DEFAULTS` is built in layers: each pass's declared
+`initial`, then the preset's own `parameter_overrides`, then (in `activate`) the
+player's `shaderfxParams` edits.
+
+Sizes resolve through `resolveScale`, which handles all four slang scale types
+(`absolute`, `viewport`, `source`, `original`) against the viewport, the pass's
+input dimensions and the original frame. Size uniforms are packed as
+`{w, h, 1/w, 1/h}`, the slang convention.
+
+`runPass` caches two things per `(state, pass index)`. The **shader** is
+compiled once for the state's lifetime, along with the fragment manifest it was
+compiled against, since a pass's GLSL depends only on the preset and never on
+per-frame input. The **canvas** is reallocated only when the pass's resolved
+size actually changes, a window resize or a different preset. Every harness this
+runtime was ported from ran the chain once and quit, so allocating a fresh
+canvas and compiling a fresh shader on every call was invisible there. On a real
+per-frame render path it is one GPU allocation per pass per frame, and a shader
+recompile on top. The same discipline applies to the crop canvas in
+`cropToGbSource`, which is called once per frame and whose size grows with the
+world canvas as the player zooms out; leaving it uncached was a real cost that
+scaled with zoom level even with a single preset active.
+
+Sampler binding is by semantic, from the bridge's classification, never by a
+hardcoded per-preset name check: `Source` is the previous pass's output (or the
+input frame for pass 0), `Original` and `OriginalHistory` are the input frame,
+`PassOutput` indexes an earlier pass's canvas, and `User` resolves a LUT by the
+real name the translation reported. A sampler that resolves to nothing asserts
+rather than drawing garbage.
+
+**LUTs** are loaded once per `activate`. `ShaderFX.loadImageFromPath` reads the
+bytes with plain `io.open` and goes through `love.data.newByteData` and
+`love.image.newImageData`, because a preset's texture paths are arbitrary
+absolute OS paths outside any LOVE mount and `love.graphics.newImage` refuses
+those outright ("Could not open file ... Does not exist") even when the file is
+real. Wrap modes are mapped from librashader's names to LOVE's
+(`clamp_to_border` to `clampzero`, `clamp_to_edge` to `clamp`, `repeat`,
+`mirrored_repeat` to `mirroredrepeat`). A LUT that fails to load is logged and
+left nil; the fail-loud point is the sampler assertion in `runPass` that
+actually needed it, not the loader.
+
+**History ring.** `OriginalHistoryN` currently resolves to a steady state: every
+history slot reads the current frame, both for the sampler binding and for the
+size uniform. Real per-frame history rotation has been proven out in a desktop
+harness but is not wired into this path.
+
+**Feedback.** `PassFeedback` is not implemented. A `PassFeedback` or `User` size
+uniform raises an explicit "not yet supported" error, and a `PassFeedback`
+sampler resolves to nothing and trips the binding assertion. No preset in the
+shipped shortlist uses it.
+
+**Blending.** Every pass draws with `replace`, and the chain's final pass uses
+`replace, premultiplied`. Intermediate canvases are `nearest` filtered.
+
+`ShaderFX.render(canvas, rect, source, dpiX, dpiY)` is the entry point
+`Renderer:endFrame` and `Game2` call. `canvas` is the finished window-sized
+composite (world, UI, and any post-process pipeline that already ran); `rect` is
+this frame's real playfield rectangle in physical framebuffer pixels and
+`source` is the real pixel size of the content it frames. The sequence is: crop
+`rect` out of the composite, run whichever slots are active over that crop, draw
+the untouched composite, then stretch the chain output back over `rect`. UI and
+letterbox bars outside the playfield pass through untouched. If the chain throws,
+the frame still shows the unprocessed composite; a broken preset degrades to
+"shader off", never to a crash or a blank frame.
+
+Three details in that path are non-obvious:
+
+- **DPI.** `love.graphics.newCanvas` and `draw` work in LOVE's DPI-aware
+  logical units, not raw pixels, so the viewport handed to the pass graph and
+  the final draw-back position are both converted from `rect`'s physical pixels
+  first. On a `dpiscale = 1` desktop the two are numerically identical and the
+  bug is invisible; at dpiscale 3 on real Android hardware the chain output
+  rendered about three times too large and at a pixel-valued offset in unit
+  space.
+- **Draw color.** `cropToGbSource` sets `setColor(1, 1, 1, 1)` explicitly. The
+  caller can leave the draw color dirty (a menu's black text leaves it at
+  `(0,0,0,x)`), the crop draw multiplies the canvas texels by the active color,
+  and `push("all")` saves state for `pop()` without resetting it. That was the
+  root cause of the Gen 2 blank-menu bug, confirmed on a desktop repro where
+  `getColor()` read `0,0,0,1` here exactly when a menu was on the stack.
+  `flushBatch()` on the line above is cheap insurance against a read-after-write
+  ordering hazard between this draw and whatever last rendered into the canvas;
+  it was never confirmed to fix anything on its own.
+- **The final blit stretches.** A slang chain's last pass is not required to
+  land on the viewport size, and most presets (21 of the 78 in the corpus)
+  declare their last pass `scale_type = "source"` and stay at native Game Boy
+  resolution, relying on the frontend's blit exactly as RetroArch does.
+  Requiring an exact size match here used to skip the draw outright for every
+  such preset on every frame, which is a silent total no-op rather than a sizing
+  quirk. The stretch uses the last-run chain's own final-pass `filter` to pick
+  nearest or linear.
+
+### What this engine feeds shaders that a libretro core does not
+
+A stock libretro core hands its frontend a raw framebuffer and a frame count.
+This engine has more context available and passes some of it through.
+
+| Context | How it reaches the shader |
+| --- | --- |
+| Playfield rect and true source size | `rect`/`source` per frame from `Renderer:endFrame` or `Game2`, so the chain sees real on-screen geometry at any survey zoom or Faithful Ratio state rather than a fixed 160x144 assumption that then gets stretched |
+| Blit scale | `rect.scale`, the crisp integer scale the composite was built at, used to derive the crop's own draw scale |
+| SGB zone coloring and palette | Baked into the input frame. `PaletteFX` zone passes run before the composite reaches ShaderFX, so a preset shades an already-zone-tinted image |
+| Performance tier | `chainRenderScale()` reads `Performance.CAPS[tier].shaderfx`, a chain-resolution multiplier; the viewport and the cropped source both shrink by it and the final blit upscales |
+| Accelerometer | `Sensors.read("accelerometer")`, bound to the `Accelerometer` unique semantic |
+| Gyroscope | `Sensors.read("gyroscope")`, bound to `Gyroscope`, plus the integrated yaw twist below |
+
+Two motion semantics are deliberately pinned rather than guessed. `Rotation` is
+bound to 0 because librashader's own documentation is explicit that it is
+`retroarch_get_rotation()`, the *content's* requested rotation (a vertically
+oriented arcade core, say), not device orientation. Nothing here ever rotates
+Game Boy content, so 0 is the correct answer, not a placeholder.
+`AccelerometerRest` is bound to `{0, 0, 0}`: it is librashader's "reading at
+rest" calibration reference, no preset in the corpus reads it, and a fixed
+placeholder beats an invented value.
+
+`src/core/Sensors.lua` is what makes the two real motion semantics work.
+`love.sensor` does not exist in LOVE 11.5, the version this project ships, on
+any platform including Android; it is a LOVE 12 addition. The working path is
+raw FFI into the SDL2 that LOVE already links, the same technique
+`src/core/Orientation.lua` uses, opening the first `SDL_SENSOR_ACCEL` or
+`SDL_SENSOR_GYRO` device via `SDL_NumSensors`/`SDL_SensorGetDeviceType`/
+`SDL_SensorOpen`. The `love.sensor` path is kept above it and simply stops being
+dead code after a future LOVE 12 upgrade. Loading order matters:
+`ffi.load("SDL2")` first, needed on desktop where SDL2 is a separate DLL, then
+bare `ffi.C`, needed on Android where love-android links SDL2 statically into
+`libmain.so` and there is no `libSDL2.so` for `ffi.load` to find by name. A
+device with no sensor is probed once and then permanently reports zeros, so a
+desktop run does not pay for it every frame.
+
+SDL keeps sensor readings in the device's fixed chassis frame regardless of
+screen orientation, so `rotateForScreen` remaps x and y into
+"as currently displayed" terms using `SDL_GetDisplayOrientation`. That
+compensation is mobile-only: a desktop monitor is legitimately and permanently
+"landscape" to that query, which says something about the monitor's shape and
+nothing about how a player is holding anything.
+
+The accelerometer path in `sizeTable` does three things to the raw reading
+before it becomes a uniform, all of them driven by real on-device data:
+
+1. **Rest-pose subtraction.** `activate()` snapshots whatever pose the player is
+   actually holding the device in and every later reading is measured relative
+   to that, rather than to an assumed idealized vertical. The shipped tilt maths
+   (`pt_base.inc`'s `getOrientedTilt`) was authored assuming gravity sits almost
+   entirely on one axis at rest; a natural, comfortable hold already puts 56 to
+   66 percent of gravity's magnitude on the axis the shader reads as tilt, so
+   the effect sat near-saturated all the time instead of starting near neutral.
+2. **Axis swap.** The tilt maths assumes a device resting flat, with gravity
+   dominant on Z, the one axis it never reads. This engine's rest pose is
+   upright portrait, where Y is gravity-dominant, so y and z are swapped to put
+   gravity back on the ignored axis.
+3. **Denominator stabilization.** `getOrientedTilt` normalizes by the full
+   vector's magnitude. Before calibration that magnitude was a stable ~9.8 that
+   quietly damped tilt and noise alike by the same factor; calibration correctly
+   zeroes x and y at neutral but also shrinks the magnitude near rest, and real
+   logs showed it swinging between 0.65 and 11.4 second to second on ordinary
+   hand jitter, which reads as wildly bouncing. A fixed constant is re-injected
+   on the ignored axis to keep the denominator stable, but only when there is a
+   genuine live reading to calibrate against. An all-zero raw read is
+   `Sensors.lua`'s explicit "no hardware at all" sentinel, never a real value on
+   Earth, and injecting into that case would make the shader believe it had
+   sensor data and silently replace its own static fallback with fake motion.
+
+Yaw is a separate mechanism. A raw gyroscope reading is angular velocity, not an
+angle, so it only becomes a usable on-screen offset by integrating over time,
+and only the per-slot state persists frame to frame to do that. `updateYawTwist`
+is deliberately a decaying spring rather than a true integrated heading:
+gyro-only integration drifts without a magnetometer to correct it, so this
+settles back toward neutral and stays bounded by construction. It is folded onto
+the accelerometer's x component before the shader's own normalize and clamp,
+because that is the only already-compiled channel the stock upstream maths
+reads, and reaching an already-converted artifact with no reconvert was worth
+the tradeoff that the twist reads as an added simulated tilt rather than a
+cleanly separate motion. It applies to `sunlight_shimmer.slangp` only, the one
+preset in the shortlist with a twist-reactive channel. `YAW_GAIN = 0.6` and a
+clamp of +/-2 were tuned against real device data (a moderate real yaw turn
+peaks around 1.5 to 1.7 rad/s); a much larger gain was tried on-device and
+looked worse, because overshooting a comfortable range reads worse than being
+subtle. Retune in small steps with real device checks, not big jumps.
+
+## Two slots
+
+`ShaderFX.SLOTS` is `{"main", "secondary"}` and `ShaderFX.OPTION_KEY` maps each
+to its save key. The slots are activated and persisted independently, and the
+same `ShaderFXScreen` serves both, opened with the slot as its argument. Pragma
+parameter edits are keyed by *preset name*, not by slot, because a preset's
+values are a property of the preset the same way its cached artifact is;
+editing them re-activates every slot currently showing that preset and persists
+for the next load in either.
+
+When both slots are active, `render` runs main's chain first and hands its
+finished output to secondary as secondary's own input frame, along with its
+dimensions, so a secondary preset that scales off its input sees main's real
+output size rather than the original crop. Either slot alone behaves exactly as
+a single-preset path; neither active is a plain passthrough.
+
+**This is not how RetroArch composes multiple presets.** RetroArch merges
+presets into a *single* pass list through `#reference` and `Append`, producing
+one pass graph with one shared semantics map, where a later pass can reference
+an earlier one's output by alias and the whole thing resolves as one unit. Two
+slots here are two independent librashader chains run back to back, which is
+what stacking two separate preset chains would give you, not what merging them
+gives you. Presets that assume merged semantics will not behave the same way.
+
+## Test seams
+
+`ShaderFX` exposes a few fields purely so a headless harness can assert on real
+per-frame values without taking a screenshot: `_lastRect` and `_lastSource`
+(the rect and source dimensions a caller handed in), `_lastCrop` (the exact crop
+canvas, which the later unconditional draw-back would otherwise mask),
+`_lastYawTwist` and `_lastAccelPacked` (the integrated twist and the values that
+actually reached the packed uniform, per slot). `Sensors.setOverride`,
+`Sensors.clearOverride` and `Sensors.setOrientationOverride` inject synthetic
+readings on a machine with no hardware.
+
+## Limitations
+
+None of these are theoretical.
+
+- **Tested on very little real hardware.** Essentially one Android phone, one
+  desktop, and the automated harnesses. Anything about how a preset actually
+  looks or performs elsewhere is unverified.
+- **No performance tier is actually tuned.** The chain-resolution multiplier in
+  `Performance.CAPS` is a working mechanism, but every tier that permits
+  ShaderFX at all sets it to 1.0. Nothing runs at reduced chain resolution
+  today. Picking a real value for weak hardware needs a device this project does
+  not have.
+- **The dual-slot design does not match RetroArch.** See above. Two chains in
+  sequence is not one merged pass list.
+- **`OriginalHistoryN` is a steady state.** Real per-frame history rotation
+  falls back to "every slot is the current frame" in the live render path, and
+  is unverified there.
+- **`PassFeedback` is unimplemented.** Its size uniform raises an explicit
+  error and its sampler trips an assertion.
+- **`ShaderFXScreen` has a known text-overlap bug on long preset names.**
+  `ListMenu`'s `fitLabel` truncation covers the ordinary case, but a long enough
+  player-supplied filename still collides with the row's right-hand hint.
+- **`ShaderSourcePatches` ships with an empty patch table and nothing uses it.**
+  Intentional, for the reason given above, but it means the mechanism has no
+  live coverage.
+- **Cached artifacts have no staleness detection.** Existence is the only check.
+  The two unconditional reconvert points paper over it; anything that does not
+  go through them can be running a stale translation.
+- **Artifacts are per-device.** The GLSL dialect is baked in at convert time.
+  Copying a converted preset folder between a phone and a desktop copies a
+  wrong artifact along with it.
+- **The bundled bridge is only as good as the build machine.**
+  `scripts/build.sh` bundles the cdylib for mac, win and linux via
+  `bundle_shader_bridge`, building it with cargo when a prebuilt one is not
+  supplied through `SHADERFX_BRIDGE`. A build host without cargo produces a
+  package that can run converted presets but cannot CONVERT new ones, and says
+  so rather than failing. Android ships the `.so` via `jniLibs`.
+- **The buildbot shortlist is a temporary trim.** `KEPT_PRESETS` reflects one
+  manual pass over `handheld/` and is expected to change, most likely to shrink.
+- **Tilt direction is unverified.** Which way forward and back rocking moves the
+  effect was never confirmed on a device; if it feels backwards the fix is a
+  sign flip on the swapped axis, not a deeper bug. Likewise, whether the
+  landscape rotation compensation matches real RetroArch is genuinely unknown:
+  RetroArch's Android input driver computes a screen rotation but does not
+  visibly apply it to the accelerometer values that reach shader uniforms, so
+  this project's compensation may be an improvement over upstream rather than a
+  match to it.
+- **`texelFetch` wrap behavior at image edges may differ.** The ES 1.00 rewrite
+  in the bridge turns those calls into `texture()`, which honours the sampler's
+  wrap mode out of range where `texelFetch`'s out-of-bounds behavior is
+  implementation defined. Unmeasured.
@@ -1,20 +1,28 @@
 # Touch skins and the Skin Studio

 A **skin** replaces the on-screen controls wholesale: a bezel image, a
-control layout, and the rectangle the Game Boy screen is drawn into. Engine:
+control layout, and a screen-placement anchor. Engine:
 `src/core/TouchSkin.lua` (model, parsers, zip export), `src/core/TouchControls.lua`
-(draw and input), `src/render/Renderer.lua` (the screen viewport),
-`src/ui/SkinStudio.lua` (the desktop editor). Tests:
+(draw and input), `src/render/Renderer.lua` (screen placement),
+`src/core/DeltaSkin.lua` (Delta `.deltaskin` import and export),
+`src/ui/SkinStudio.lua` (the responsive skin editor). Tests:
 `tests/engine/touch_skin_test.lua`, `tests/engine/skin_studio_test.lua`,
+`tests/engine/skin_studio_ux.lua`,
 `tests/engine/skin_studio_image_import.lua`,
-`tests/engine/launcher_skins_tab.lua`.
+`tests/engine/skin_format_import_test.lua`,
+`tests/engine/launcher_skins_tab.lua`,
+`tests/engine/launcher_skins_ux.lua`.

-Skins are picked in the launcher's **Skins** tab, which also imports them and
-opens the studio. `options.touchControls.skin` holds the folder name.
+The launcher's **Skins** tab imports skins, shows the enabled skin, exports it,
+and is the one place that turns skin use off. **My Skins** holds the visual
+grid, pagination, edit, delete and per-skin export actions.
+`options.touchControls.skin` holds the folder name.

 ## Formats

-Two load. `skin.lua` wins when a folder has both.
+Three load: the native `skin.lua`, a RetroArch overlay `.cfg`, and a Delta
+`.deltaskin`. `skin.lua` wins when a folder has more than one. The launcher
+badges each installed skin with the format it was read from.

 **RetroArch overlay `.cfg`.** The libretro `common-overlays` collection loads
 as-is. Supported keys:
@@ -24,7 +32,7 @@ as-is. Supported keys:
 | `overlays` | page count |
 | `overlayN_name` | page name, the target of `next_target` |
 | `overlayN_overlay` | bezel image |
-| `overlayN_full_screen` | stretch the page to the window |
+| `overlayN_full_screen` | cover the window with the page without deforming its artwork |
 | `overlayN_rect` | page placement, default `0,0,1,1` |
 | `overlayN_aspect_ratio` | design aspect; the overlay letterboxes to it even when full screen |
 | `overlayN_range_mod`, `overlayN_alpha_mod` | desc defaults |
@@ -41,6 +49,15 @@ Hitboxes are `radial` or `rect`. Pipe-separated binds (`left|down`) are one
 control that holds both. A `nul` desc is decoration: it draws and never
 captures a touch.

+The area desc types are expanded rather than ignored: `dpad_area`,
+`abxy_area`, `analog_left` and `analog_right` each become eight hitboxes over
+the same area, one per 45 degree sector measured from its centre, the way
+RetroArch resolves them: there is no neutral middle, and the four corner
+sectors fire two inputs. Any `_up` / `_down` / `_left` / `_right` override and
+the per-side reach are honoured, and the desc's own art is kept as decoration
+over the top. Exporting a cfg folds the eight back into the one area desc they
+came from. `retrok_<key>` is a keyboard bind.
+
 Alpha follows RetroArch (`input_driver.c`, `input_overlay_post_poll`): every
 image sits at the overlay opacity, and a pressed control's image swaps to
 `opacity * alpha_mod`. So `alpha_mod` above 1 lights a control up and below 1
@@ -71,6 +88,32 @@ return {
 }
 ```

+**Delta `.deltaskin`.** A zip (any wrapping folder is stripped) holding an
+`info.json` plus its art. The `representations` tree is walked
+device / display type / orientation, and every orientation that exists becomes
+a page; `page.orient` is the orientation key, so a portrait/landscape pair
+auto-rotates like a RetroArch one. Item `frame` rects are top-left plus size in
+`mappingSize` points and are converted to the native centre plus half extent;
+`extendedEdges` merge per key into the reach fields; `mask: "circle"` becomes a
+radial hitbox. A `dpad` or `thumbstick` item expands into the 3x3 grid, so the
+corners fire two directions. `screens[1].outputFrame` (or the legacy
+`gameScreenFrame`) becomes the screen cutout. A portrait page with neither
+keeps `mappingSize` as the overlay aspect, sits at the bottom of the
+window, and puts the Game Boy picture in the leftover space above -- the
+usual GBA4iOS controller-deck layout. Pages that name a screen rect fit the
+game into it. Host functions map to
+engine hotkeys: `menu` to `menu_toggle`, `fastForward` to
+`hold_fast_forward`, `toggleFastForward` to `toggle_fast_forward`;
+`quickSave` and `quickLoad` have nothing to bind to and drop to decoration.
+Both `com.rileytestut.delta.game.*` and Manic's `public.aoshuang.game.*`
+identifiers are accepted, and a non Game Boy system warns instead of failing.
+
+PDF artwork is usually a JPEG wrapped so iOS can scale it (Delta's
+Image-to-PDF skins, Preview exports, and the like). Import extracts that
+JPEG and draws it; a true vector PDF with no embedded image is still refused,
+with a message asking for a PNG version. GBA4iOS `.gbcskin` / `.gbaskin` files
+are an older, incompatible schema and are refused by name.
+
 ## Bindable actions

 The eight Game Boy buttons: `a`, `b`, `start`, `select`, `up`, `down`,
@@ -94,7 +137,7 @@ to decoration and never captures a touch.
 As an extension to the format, `key:<name>` presses any keyboard key, which is
 how a skin button reaches a mod hotkey.

-## The screen viewport
+## Screen placement

 `overlayN_viewport` is the cutout the picture is fitted into. The Game Boy
 screen keeps its whole-pixel scale and letterboxes inside that rect rather than
@@ -105,6 +148,17 @@ that lets a widescreen bezel take the filling survey-zoom world view instead.
 A viewport also implies the faithful-ratio lock. Without it the world pass
 expands to fill the cutout and you get more map instead of a Game Boy screen.

+Zoom still steps around that hole: OUT shows more map inside it, IN enlarges
+the world, and the start menu stays at the hole's fit scale instead of
+shrinking with the map.
+
+An image-backed portrait overlay that has no explicit vertical anchor is treated
+as a controller deck: it is contained without deformation and pinned to the
+bottom on taller screens. The spare space belongs to the game above it.
+
+When a skin is active, **SCREEN POS** reads **SKIN**: placement comes from the
+skin rather than the normal Center / Upper / Top setting.
+
 Border art often ships with a transparent hole and no `viewport` key. **Detect
 screen from bezel** in the studio measures the hole out of the art's alpha
 channel and writes the rect.
@@ -112,17 +166,27 @@ channel and writes the rect.
 ## Bezels versus pads

 A skin whose active page binds nothing is a frame rather than a pad: a TV
-surround, a handheld shell, a Super Game Boy border. Those draw on **desktop**
-as well, where the touch overlay itself does not, and a gamepad does not hide
-them. Anything that binds a button still follows the usual mobile /
-`POKEPORT_TOUCH` rule.
+surround, a handheld shell, a Super Game Boy border. Selected skins draw on
+**desktop** as well as mobile; a gamepad does not hide them.

 ## Installing

-Drop a folder or a `.zip` into `skins/` in the save directory, or drop a zip on
-the launcher window while the Skins tab is open. A zip is mounted in place, so
-there is nothing to unpack. The folder needs one `skin.lua` or `.cfg`
-(`overlay.cfg` is preferred when there are several) and the images it names.
+Four roads, all of them landing in `skins/` in the save directory:
+
+* **Import** on the Skins tab opens the host file picker for a `.zip` or a
+  `.deltaskin`.
+* **Paste a skin link** in the tab's URL row, then **Add**. The download runs
+  on the fetch pool (`src/net/Fetch.lua`), so the launcher stays live, and the
+  row shows a spinner until it lands. A link to a bare `overlay.cfg` is wrapped
+  into an archive on the way in. This is the road that works on a phone, where
+  there is no file picker to speak of.
+* Drop a `.zip` or `.deltaskin` on the launcher window while the Skins tab is
+  open.
+* Copy a folder or archive into `skins/` by hand.
+
+An archive is mounted in place, so there is nothing to unpack. It needs one
+`skin.lua`, `.cfg` (`overlay.cfg` is preferred when there are several) or
+`info.json`, plus the images it names.

 Two ship bundled, both from libretro's `common-overlays` under CC-BY-4.0:

@@ -137,9 +201,32 @@ shipping branding.

 ## The studio

-Launcher, Skins tab, **Open Skin Studio**, or the gear on any skin row to open
-that skin. Desktop only: the launcher does not offer it on Android or iOS,
-because it wants a mouse, typed coordinates and room for an inspector.
+Launcher, Skins tab, **My Skins** opens the Studio library on desktop and
+mobile. **My Skins** is the only visual grid: real bezel previews plus create
+and import actions, with each card owning Edit, Export and (for installed
+skins) Delete. Choosing Edit opens a separate, canvas-first editor; the old
+New/Load workspace controls are deliberately not duplicated inside that editor.
+
+The editor keeps its canvas unobstructed and puts the contextual actions in a
+compact lower tray: add/control binding, button and bezel artwork, pages,
+screen placement, freeform/10:9 screen shape and deletion. **Screen** opens
+cutout, bezel-hole detect, **Detect this screen**, and the canvas presets.
+**Detect this screen** (also on the tray) sets the mock device to the live
+window size so a phone skin is authored at that phone's form factor rather
+than a generic 1080x1920 16:9. **Zoom −** shrinks the mock device inside the
+workspace so the screen hole can be dragged larger than the bezel while the
+handles stay grabable; **Fit** restores contain. The mouse wheel over the
+canvas, and `-` / `=` / `0` on a keyboard, do the same. Touches select, drag and resize the
+same controls that a mouse edits on desktop.
+
+My Skins and the editor chrome sit inside the platform safe area (notch,
+status bar, home indicator), the same inset the launcher uses. The mock
+device still represents the full window, because a skin covers the whole
+screen at play time.
+
+The launcher’s **Turn skins off** button clears the selected skin and disables
+skin use. With no skin enabled, mobile falls back to the built-in pad; that pad
+is not itself a skin card.

 **Canvas.** A mock device at a chosen preset, so a phone skin is authored at
 phone proportions on a desktop monitor.
@@ -147,6 +234,7 @@ phone proportions on a desktop monitor.
 | Preset | Size |
 | --- | --- |
 | Phone portrait / landscape | 1080x1920, 1920x1080 |
+| This screen | the live window, so a phone is authored at its own height |
 | Tablet portrait / landscape | 1536x2048, 2048x1536 |
 | Steam Deck | 1280x800 |
 | Desktop 1080p | 1920x1080 |
@@ -157,39 +245,73 @@ The Super Game Boy preset locks the viewport to the real screen window,
 160x144 at (48,40), so an SGB border cannot be drawn out of register.

 **Editing.** Click a control to select it, drag to move, eight handles to
-resize. X / Y / W / H are in canvas pixels, so a control can be typed to the
-coordinate its art was drawn at. Bind, hitbox shape, hit reach and idle and
-pressed images are per control; the bezel, the pages and the screen cutout are
-per page. The cutout is itself a draggable element with a 10:9 lock.
+resize. Arrow keys nudge the selection one canvas pixel, shift-arrow ten. While
+a control is dragged it snaps to the centres and edges of the other controls
+and of the page itself when it comes within a few pixels, and the guide it
+snapped to is drawn. X / Y / W / H are in canvas pixels, so a control can be
+typed to the coordinate its art was drawn at. **Back** and **Front** move the
+selection through the draw order. Bind, hitbox shape, hit reach and idle and
+pressed images are per control; the bezel, the pages and the screen anchor are
+per page. The SCREEN anchor is itself draggable and resizable; its default
+shape is freeform, with an optional 10:9 lock.
+
+**Bind** opens a grid of every bind the engine understands: the eight Game Boy
+buttons, the diagonal pairs, every hotkey, desktop hotkeys and decoration.
+The desktop section exposes `-` / `=`, `1` through `5`, `F1`, `F2` and `F10`
+as `key:` controls, so a mobile button invokes the exact same game path as
+its desktop shortcut. The COMBINE chips at the top toggle one part at a time,
+which is how a pipe bind like `left|down` is built without typing it.
+
+**Undo** and **Redo** in the top bar cover every edit (ctrl+Z / ctrl+Y, or
+`u` / shift+`u` without a keyboard modifier). The stack holds the last 50
+actions. `L` toggles the bind captions drawn on the canvas.

 Each page can **Lock** to portrait or landscape. With **Match canvas** on
-(the default), Next page picks a matching mock device and the canvas preset
+(the default), the page list picks a matching mock device and the canvas preset
 picks a matching page. Turn Match canvas off to look at a portrait page on a
-landscape device.
+landscape device. **Pages** opens the page list, where a page is selected,
+renamed or deleted.
+
+Starting a new skin, opening another one or closing the studio with unsaved
+edits prompts first, with Save first / Discard / Cancel.

 A RetroArch overlay whose pages are already named portrait / landscape
 (the auto-rotate convention) locks those pages and turns Match canvas on
 when you open it. You do not have to click Lock first.

-**Art.** The **Bezel**, **Idle art** and **Pressed art** rows cycle through the
-images already in the skin folder; the **Import** button beside each one opens
-the host file picker (`src/core/FilePicker.lua`: osascript, PowerShell,
+**Art.** The **Bezel**, **Idle art** and **Pressed art** rows open a
+thumbnail grid of the images already in the skin folder, with `(none)` first;
+the **Import** button there and beside each row opens the host file picker (`src/core/FilePicker.lua`: osascript, PowerShell,
 zenity/kdialog) and copies the chosen PNG or JPG into `img/` under the name in
 the SKIN field, then assigns it to that slot. Dropping a PNG or JPG on the
 window does the same for whichever slot was last touched. A new bezel does not
-move the screen cutout: press **Detect screen from bezel** to measure it out of
+move the screen anchor: press **Detect screen from bezel** to measure it out of
 the art's alpha.

-**Testing.** **Test** makes the canvas live: clicking presses real Game Boy
-buttons and the footer reports what is held. **Play** saves the skin, selects
-it, and boots the game with it.
+**Testing.** **Test** renders a game-composition preview behind the live overlay:
+the 160x144 picture letterboxes inside the screen cutout, matching gameplay.
+Clicking presses real Game Boy buttons and the footer reports what is held.
+**Play** saves the skin, selects it, and boots the game with it.

 **Saving.** **Save** writes `skins/<name>/skin.lua` and copies every image the
-skin names, so the folder stands alone. **Export** packs it as one zip
-(`src/core/SkinZip.lua`, store-only) carrying the native `skin.lua`, the
-images, and the original `.cfg` when it came from one. An exported skin drops
-straight back into `skins/` and still opens in RetroArch.
+skin names, so the folder stands alone. **Export** offers three formats, and
+the Skins tab's gear offers the same three for any installed skin:
+
+| Export | Contents |
+| --- | --- |
+| gen1recomp `.zip` | the native `skin.lua`, the images, and the original `.cfg` when it came from one |
+| RetroArch `.zip` | an `overlay.cfg` generated from the model, plus the images |
+| Delta `.deltaskin` | an `info.json` generated from the model, plus the images |
+
+All three are written store-only (`src/core/SkinZip.lua`) into `skins/_export/`
+in the save directory, which is outside the folder the skin list scans, so an
+export can never shadow the skin it came from. The notice names the full path
+so a phone can find the file in its own file manager. On desktop **Show the
+exported file** opens that folder.

 ## Not implemented

-RetroArch's `analog_*`, `dpad_area`, `abxy_area` and `retrok_*` desc types.
+True vector Delta skins (PDF artwork with no embedded JPEG). Those still need
+a PDF renderer this engine does not carry, so they are refused with a message
+rather than imported half-drawn. PDF files that wrap a JPEG, the usual Delta
+skin case, extract on import.
@@ -91,14 +91,14 @@ Do **not** launch from the Album applet path for normal play.

 This project ships **no** game data. On first launch:

-1. Put your own legally obtained Pokémon Red, Blue (`.gb`), Yellow, or
-   Gold (`.gbc`) dump into `switch/gen1recomp/pokemon-love2d/imports/` (the
-   launcher also shows the live save-dir path). All four can sit in the
+1. Put your own legally obtained Pokémon Red, Blue (`.gb`), Yellow, Gold, or
+   Silver (`.gbc`) dump into `switch/gen1recomp/pokemon-love2d/imports/` (the
+   launcher also shows the live save-dir path). All five can sit in the
   same folder.
-2. Use **Scan again** on that game's tab (Red / Blue / Yellow / Gold).
-   Rescan matches by ROM SHA-1 for the open tab only. A Red dump never
-   imports from the Yellow tab (and vice versa). Gold is Beta in the
-   launcher; a clean US Gold dump is enough to Play.
+2. Use **Scan again** on that game's tab (Red / Blue / Yellow / Gold /
+   Silver). Rescan matches by ROM SHA-1 for the open tab only. A Red dump
+   never imports from the Yellow tab (and vice versa). Gold and Silver are
+   Beta in the launcher; a clean US dump of either is enough to Play.

 ## 5. Import / Export a raw `.sav`

@@ -111,10 +111,12 @@ SD / FTP, same transfer methods as ROMs. Paths are **per game**:
 | Blue | `imports/saves/blue/` | `exports/blue/` |
 | Yellow | `imports/saves/yellow/` | `exports/yellow/` |
 | Gold | `imports/saves/gold/` | `exports/gold/` |
+| Silver | `imports/saves/silver/` | `exports/silver/` |

 (Under the save dir `pokemon-love2d/`. The zip already creates these folders.
-Gold cart `.sav` import/export is not supported yet -- the folders exist so
-MTP browsing matches the other games. Gold progress still saves in-engine.)
+Gold and Silver cart `.sav` import/export is not supported yet -- the folders
+exist so MTP browsing matches the other games. Gold and Silver progress still
+saves in-engine.)

 1. Copy a Gen 1 `.sav` (32 KB) into that game's inbox under the save dir
   ([switch-transfer.md](switch-transfer.md)).
@@ -181,7 +183,6 @@ hotkeys (`2`/`3`/`5` are claimed before any mod pipeline hotkey runs).
 | ----- | -------------- | ------------------- |
 | Select + **A** | `2` | COLORS |
 | Select + **B** | `3` | TILT |
-| Select + **Y** | `5` | GBC FX |
 | Select + **X** | `6` | Mod pipeline hotkey (if a mod registers `6`) |
 | Select + **L** | `7` | Mod pipeline hotkey (if a mod registers `7`) |

@@ -22,8 +22,8 @@ Player install (what to download, title override) stays in
 | Loose iteration pair | `sdmc:/switch/gen1recomp/gen1recomp.nro` **and** `game.love` beside it |
 | ROM inbox | LÖVE save dir → `imports/` (launcher shows the live `getSaveDirectory()` path; under MTP often `1: SD Card/<save identity>/imports/`) |
 | Mod zip inbox | Same save dir → `imports/mods/` then MODS → **Scan again** |
-| Save `.sav` inbox | Same save dir → `imports/saves/red\|blue\|yellow\|gold/` then that game's SAVE FILES → **Import save** (Gold cart `.sav` not supported yet) |
-| Save exports | Same save dir → `exports/red\|blue\|yellow\|gold/` (pull after **Export save**; Gold cart `.sav` not supported yet) |
+| Save `.sav` inbox | Same save dir → `imports/saves/red\|blue\|yellow\|gold\|silver\|crystal/` then that game's SAVE FILES → **Import save** (Gen 2 cart `.sav` not supported yet, on Gold, Silver or Crystal) |
+| Save exports | Same save dir → `exports/red\|blue\|yellow\|gold\|silver\|crystal/` (pull after **Export save**; Gen 2 cart `.sav` not supported yet, on Gold, Silver or Crystal) |
 | Opt-in diagnostics | Empty `switch-debug.txt` in the save dir → `switch.log` |
 | Lua error log | `lua-error.log` in the save dir |

@@ -54,7 +54,8 @@ macOS, not a Mac-only requirement.
 3. Create `switch/gen1recomp/` if needed; extract the release zip at SD root
   (or copy NRO / `game.love` for loose).
 4. For ROMs/mods/saves, open the save-dir `imports/`, `imports/mods/`,
-   `imports/saves/<red|blue|yellow|gold>/`, or `exports/<red|blue|yellow|gold>/`
+   `imports/saves/<red|blue|yellow|gold|silver|crystal>/`, or
+   `exports/<red|blue|yellow|gold|silver|crystal>/`
   path the launcher prints.
 5. Wait for the queue; refresh; exit MTP responder; title-override launch.

@@ -0,0 +1,65 @@
+# Tiled map editing (mod authoring)
+
+`tools/tiled_export.py` turns the imported ROM cache into a
+[Tiled](https://www.mapeditor.org) workspace, so maps can be edited in a
+real map editor and exported back out as a mod. The original had no map
+editor at all; the port's own map data is plain Lua, which is what makes
+this a data path rather than an asset path.
+
+Editing is done in our own Tiled build,
+[bryanthaboi/tiled_gen1recomp](https://github.com/bryanthaboi/tiled_gen1recomp/releases),
+which ships the `gen1-mod-export` extension the workspace relies on. Grab it
+from that repo's releases; upstream Tiled opens the workspace but cannot
+export a mod out of it.
+
+```sh
+python3 tools/tiled_export.py          # -> build/tiled/ (gitignored)
+```
+
+Then open `build/tiled/gen1.tiled-project` in that build of Tiled.
+
+- **The overworld is one surface.** All 222 maps become `maps/*.tmj`, and
+  `kanto.world` places the 36 connected overworld maps at their real
+  connection offsets. That world is pre-loaded (seeded into the workspace's
+  Tiled session), so opening any one overworld map draws its neighbors around
+  it and you scroll and edit straight across the seams. Everything else is a
+  double-click away in Tiled's project panel.
+- **Extending Kanto wires both ends.** A connection lives on both maps, so
+  hooking a new map onto a base map also emits the return connection as a
+  patch on that base map, keeping its other directions intact. The return
+  offset is derived, not guessed: all 78 vanilla reciprocal pairs satisfy
+  `back.offset == -offset`.
+- **A Tiled tile is a gen1 block.** Each of the 24 tilesets becomes a Tiled
+  tileset whose tiles are its 32x32 blocks, composited from the 8x8 sheet,
+  so a tile layer *is* the map's `blocks` array. Warps, signs and objects
+  sit on the 16px cell grid in object layers, which is the grid the engine
+  addresses them on.
+- **Collision is visible.** View > Show Tile Collision Shapes draws the real
+  walkability: a rectangle covers each cell whose feet tile is not in the
+  tileset's `walkable` list, which is the rule `src/world/Map.lua` applies.
+- **Maps are shown in their real colors.** Each map is atlased in the SGB
+  palette it renders with, so Cerulean is blue and Lavender is purple in the
+  editor exactly as in game. Vanilla resolves that through a cascade with
+  interiors inheriting the last outdoor map, so the workspace mirrors the
+  cascade and walks the warp graph to colour interiors. Changing a map's
+  `palette` exports `palette = "..."` on the record, which beats the cascade,
+  and the editor offers the real palette names as a dropdown.
+- **New blocks and new tilesets.** `blocksets/*.tmj` show a tileset's blocks
+  as raw 8x8 tiles, four by four, so new blocks can be composed there;
+  per-tile flags on `tilesets/tiles_*.tsj` become `walkable`, `waterTiles`,
+  `doorTiles` and the rest.
+- **Export is a diff, not a fork of the data.** The `gen1-mod-export`
+  extension (shipped in `tiled_gen1recomp`) writes either one map file or a whole
+  loadable mod folder. An edited vanilla map diffs against the imported data
+  and emits `mod.content.maps:patch` carrying *only* the fields that moved, so
+  a mod covers the parts it changes and leaves the rest to the base game; a
+  new map gets `:register` at an index of 1000 or above. An unchanged map
+  exports nothing at all. Exports pass `tools/modkit.py validate` and `lint`.
+- **Or the whole record, on request.** Ticking `exactExport` on a map switches
+  it to `mod.content.maps:override`, pinning the map to exactly what the
+  editor shows. It is off by default because an override wins outright over
+  any other mod patching that map, where a patch composes.
+
+No ROM-derived art travels into an exported mod: a tileset still drawing on
+the player's own imported sheet references that path rather than shipping the
+pixels, and only a sheet the author supplied is copied in.
@@ -64,7 +64,8 @@ mounted or deleted as stale; the launcher directs the player to a full package.

 Each tagged release `vX.Y.Z` carries the existing per-platform archives
 (`gen1recomp-X.Y.Z-macos.zip`, `-windows.zip`, `-linux.zip`,
-`-android.apk`) plus two assets the updater itself consumes:
+`-linux-arm64.AppImage`, `-android.apk`, `-ios.ipa`, `-switch.zip`, Xbox and
+PortMaster archives) plus two assets the updater itself consumes:

 - `gen1recomp-X.Y.Z.love` - the payload, matched by the exact pattern
  `gen1recomp-<version>.love` (see `isPayloadName` in `Boot.lua` and
@@ -75,8 +76,9 @@ Each tagged release `vX.Y.Z` carries the existing per-platform archives
  filename otherwise to match the asset name exactly.

 A release missing either asset is treated as "no in-place update available":
-`Check` reports `needs_full` and sends the player to `Check.releaseUrl()`
-(`https://github.com/bryanthaboi/gen1recomp/releases/latest`).
+`Check` reports `needs_full`. It also selects the exact current platform asset
+from the same release and persists the requirement, so it is visible again on
+every launch, including offline launches.

 ## Save-directory layout

@@ -85,6 +87,7 @@ Under the save directory (identity `pokemon-love2d`):
 ```
 updates/gen1recomp-<X.Y.Z>.love   downloaded payload(s)
 updates/pending.txt                crash-guard marker
+updates/full-update.json           persistent native-package requirement
 ```

 `pending.txt` holds the filename of the payload currently being chainloaded.
@@ -106,7 +109,8 @@ bundled game, in that case.
   against the GitHub releases API; safe to call every frame, it is a no-op
   once a check is in flight or has reached a terminal state. `Check.state()`
   reports `idle | checking | uptodate | available | downloading | ready |
-   needs_full | error` plus the latest version and download progress.
+   needs_full | full_downloading | full_ready | error` plus the latest version,
+   download progress, and (when applicable) the selected full-package asset.
 3. **Download + verify**: on `available`, `Check.download()` tells the
   worker to fetch the payload, polling the growing `.part` file for
   progress. On completion the worker re-fetches `sha256sums.txt`, verifies
@@ -117,6 +121,17 @@ bundled game, in that case.
 4. **Restart to apply**: a `ready` payload just sits in `updates/` until the
   player relaunches; the next launch's Boot step (1) is what actually
   mounts and runs it. There is no in-session hot-swap.
+5. **Native-package requirement**: when `minShell` or `payloadHost` is
+   incompatible, the worker writes `full-update.json` and surfaces a
+   persistent launcher control. Android downloads the release APK, verifies
+   its SHA-256 entry from `sha256sums.txt`, then invokes Android's Package
+   Installer. The installer asks the user for consent and enforces package,
+   version-code, and signing-certificate compatibility. A legacy APK without
+   the installer bridge links its full package for one manual bootstrap
+   update, including when its downloaded payload already reports the latest
+   engine version. iOS links the sideload repository for a re-sideload; Xbox,
+   desktop, and PortMaster builds link their correctly named full package.
+   Switch keeps its native OTA flow.

 ## Known limitations

@@ -140,6 +155,13 @@ bundled game, in that case.
  still need a full reinstall (`minShell` / `payloadHost` gate →
  `needs_full`). Applying a downloaded payload on Android relaunches via
  `love.system.restartApp`; iOS still uses in-process `quit("restart")`.
+- **Android full updates are user-confirmed and certificate-bound.** The app
+  uses a private `FileProvider` cache path plus
+  `Intent.ACTION_INSTALL_PACKAGE`, checks Android 8+'s per-app
+  "install unknown apps" setting, and never requests a silent install. The
+  release job must use the original long-lived Android signing key; a new key
+  causes Android to reject an in-place update and requires a one-time manual
+  reinstall. See [mobile/ANDROID.md](../mobile/ANDROID.md).
 - **Dev/source runs never self-update.** `Boot.run` returns immediately when
  `love.filesystem.isFused()` is false, and a working tree's `engine` is the
  `"0.0.0-dev"` placeholder that always reports up to date, so a source
@@ -24,10 +24,10 @@ local GameViewport = require("src.render.GameViewport")

 -- Lua errors: persist a redacted trace in the save dir and surface a hint.
 do
-  local defaultErrorHandler = love.errorhandler
+  local defaultErrorHandler = love.errorhandler or love.errhand
  function love.errorhandler(msg)
-    local hint = SwitchDiagnostics.logLuaError(msg)
-    if hint and type(msg) == "string" then
+    local ok, hint = pcall(SwitchDiagnostics.logLuaError, msg)
+    if ok and hint and type(msg) == "string" then
      msg = msg .. "\n\n" .. hint
    end
    if defaultErrorHandler then
@@ -82,6 +82,11 @@ end
 local editorHost, editorVersion, editorWindow
 local closeEditor  -- forward declaration: openEditor hands it to the editor

+-- Drop CacheFs / Data / mod Runtime / Assets / LegacyCompat for one mounted
+-- version session (save editor or game).  closeEditor and returnToLauncher
+-- both go through SessionLifecycle so neither path forgets a singleton.
+local SessionLifecycle = require("src.core.SessionLifecycle")
+
 -- The editor's modules use flat names (require("Kit"), require("Party")), so
 -- their directories have to be on the require path.  It must be
 -- love.filesystem's path, not package.path: in a packaged build these files
@@ -157,9 +162,7 @@ local function openEditor(version, slotId)
  local okReq, appOrErr = pcall(require, "App")
  if not okReq then
    editorMode = false
-    if version then
-      require("src.import.CacheFs").unmountVersion(version)
-    end
+    SessionLifecycle.endEditorSession({ version = version, app = nil })
    restoreWindow()
    Importer = editorHost
    editorHost = nil
@@ -179,10 +182,7 @@ local function openEditor(version, slotId)
    editorMode = false
    if EditorApp.unload then pcall(EditorApp.unload) end
    EditorApp = nil
-    if version then
-      require("src.import.CacheFs").unmountVersion(version)
-      require("src.core.Data"):unloadGenerated()
-    end
+    SessionLifecycle.endEditorSession({ version = version, app = nil })
    restoreWindow()
    Importer = editorHost
    editorHost = nil
@@ -197,21 +197,14 @@ end
 -- Back to the launcher.  Everything the editor mounted or cached has to come
 -- back out: the version overlay (CacheFs) and the generated modules require
 -- cached behind it (Data), or pressing Play on the OTHER game would boot it
-- with this one's data.
+-- with this one's data.  Also reset Runtime / Assets / LegacyCompat so the
+-- next Edit or Play does not inherit the editor's dead mod loader.
 function closeEditor()
  local version = editorVersion
+  local app = EditorApp
  editorMode = false
-  if EditorApp and EditorApp.unload then EditorApp.unload() end
  EditorApp = nil
-  if version then
-    require("src.import.CacheFs").unmountVersion(version)
-    require("src.core.Data"):unloadGenerated()
-  end
-  for k in pairs(package.loaded) do
-    if type(k) == "string" and (k:find("save%-editor") or k == "App" or k == "Kit" or k == "State" or k == "Catalog" or k == "SaveIO" or k == "Ops" or k == "MonOps" or k == "ItemOps" or k == "PadInput" or k == "Gen" or k == "Theme") then
-      package.loaded[k] = nil
-    end
-  end
+  SessionLifecycle.endEditorSession({ version = version, app = app })
  editorVersion = nil
  restoreWindow()
  Importer = editorHost
@@ -291,7 +284,56 @@ function closeSkinStudio()
  end
 end

-function bootGame(version)
+local function makeLauncher()
+  local RomImporter = require("src.import.RomImporter")
+  local forceImport = os.getenv("POKEPORT_FORCE_IMPORT") == "1"
+  return RomImporter.new(function(version, cartId)
+    Importer = nil
+    bootGame(version, cartId)
+  end, {
+    launcher = true,
+    forceImport = forceImport,
+    onEditSave = openEditor,
+    onEditTouchControls = openTouchControlsEditor,
+    -- Skin Studio owns a touch-first layout as well as the desktop workspace.
+    -- Keep the compatibility predicate so external hosts using it still work.
+    onOpenSkinStudio = require("src.ui.SkinStudio").available_desktop()
+      and openSkinStudio or nil,
+  })
+end
+
+local function returnToLauncher()
+  if not Game then return end
+
+  local GameVersion = require("src.core.GameVersion")
+  local currentVersion = GameVersion.get()
+  SessionLifecycle.endGameSession(Game)
+  Game = nil
+  autopilot = nil
+  driverCo = nil
+  -- Leave the cart's scope behind: the launcher's own settings and slots are
+  -- the base game's, not the cart's.  The speed ladder is cart state too, so
+  -- a 1x/2x cart must not pin the launcher or the next game.
+  require("src.core.SaveData").setCart(nil)
+  require("src.core.GameSpeed").setAllowed(nil)
+
+  SessionLifecycle.endMountedSession(currentVersion)
+
+  require("src.core.Orientation").applyOptions(
+    require("src.core.SaveData").loadOptions())
+
+  local preload = require("src.mods.LauncherMods").translationStrings()
+  if preload then require("src.core.Strings").load({ strings = preload }) end
+
+  if love.window and love.window.setTitle then
+    local Version = require("src.core.Version")
+    love.window.setTitle(Version.title("Gen 1 Recompilation Project"))
+  end
+
+  Importer = makeLauncher()
+end
+
+function bootGame(version, cartId)
  -- The launcher hands us the chosen game (Red / Blue / Yellow / Gold);
  -- scripted and headless runs fall back to POKEPORT_VERSION, then Red.
  -- Set the active version and overlay its extracted cache BEFORE anything
@@ -304,6 +346,25 @@ function bootGame(version)
  -- (Blue/Yellow/Gold caches live under blue/ / yellow/ / gold/).
  CacheFs.prefix = GameVersion.cachePrefix()
  CacheFs.mountVersion(GameVersion.get())
+  local cartHash, cartSpeeds, cartOptions
+  if cartId then
+    local ok, cart, hash = pcall(function()
+      return require("src.carts.CartStore").get(cartId)
+    end)
+    if ok and cart then
+      cartHash, cartSpeeds, cartOptions = hash, cart.speeds, cart.options
+    else
+      cartId = nil
+    end
+  end
+  local SaveData = require("src.core.SaveData")
+  SaveData.setCart(cartId, cartHash)
+  -- The author's settings land in the cart's own scope the first time only;
+  -- after that the player owns them.
+  if cartOptions then SaveData.seedCartOptions(cartOptions) end
+  -- A cart may narrow or pin the speed ladder; nil restores the full one.
+  require("src.core.GameSpeed").setAllowed(cartSpeeds)
+  if cartId then SaveData.adoptCartSeal(cartId) end
  -- NX: always write nx-asset-probe.log so Yellow/Blue art failures are
  -- diagnosable from the SD without enabling switch-debug.txt.
  pcall(function()
@@ -314,11 +375,12 @@ function bootGame(version)
    love.window.setTitle(Version.title(
      GameVersion.info().displayName .. " (Gen 1 Recompilation Project)"))
  end
-  -- Gold: Gen 1 Game:load cannot consume a Gen 2 cache -- different generated
-  -- tables, save shape and screen registry -- so Gold boots its own service
-  -- owner, which mounts src/world/gen2 (walk / warps / connections) and the
-  -- Gen 2 screens instead of src/core/Game.lua's Gen 1 wiring.
-  if GameVersion.isGold() then
+  -- Gen 2: Gen 1 Game:load cannot consume a Gen 2 cache -- different generated
+  -- tables, save shape and screen registry -- so Gold and Silver boot their
+  -- own service owner, which mounts src/world/gen2 (walk / warps /
+  -- connections) and the Gen 2 screens instead of src/core/Game.lua's Gen 1
+  -- wiring.
+  if GameVersion.generation() == 2 then
    Game = require("src.core.Game2").new()
    Game:load()
  else
@@ -382,7 +444,7 @@ function love.load(args)

  -- Apply the persisted Android orientation lock (#592) before the launcher
  -- shows: SDL created the window with no orientation hint, so without this
-  -- the launcher would rotate freely until Game:applyOptions runs at boot.
+  -- the launcher would rotate freely until options are applied at boot.
  -- No-op on desktop / iOS / when options.lua does not exist yet.
  require("src.core.Orientation").applyOptions(
    require("src.core.SaveData").loadOptions())
@@ -442,8 +504,8 @@ function love.load(args)
  -- (#767) only pays off if something fills that catalog this early, and no
  -- restart could: the ordering is the same on every launch.  Read the
  -- enabled mods' string catalogs -- data only, no entry chunk -- so a
-  -- translation reaches the launcher too.  Game:load replaces this with the
-  -- real merged catalog once a version boots.
+  -- translation reaches the launcher too.  The active game's loader replaces
+  -- this with the real merged catalog once a version boots.
  do
    local preload = require("src.mods.LauncherMods").translationStrings()
    if preload then require("src.core.Strings").load({ strings = preload }) end
@@ -484,17 +546,7 @@ function love.load(args)
  -- by its SHA-1 (GameVersion.forSha1); pressing Play boots that game (Gold
  -- goes to its own service owner, src/core/Game2.lua -- docs/gold-phase1.md).
  -- Edit on a save row opens the bundled editor on that slot (openEditor).
-  Importer = RomImporter.new(function(version)
-    Importer = nil
-    bootGame(version)
-  end, {
-    launcher = true,
-    forceImport = forceImport,
-    onEditSave = openEditor,
-    onEditTouchControls = openTouchControlsEditor,
-    onOpenSkinStudio = require("src.ui.SkinStudio").available_desktop()
-      and openSkinStudio or nil,
-  })
+  Importer = makeLauncher()
 end

 function love.update(dt)
@@ -628,7 +680,7 @@ function love.gamepadpressed(joystick, button)
    end
    return
  end
-  if Studio then return end
+  if Studio then return Studio.gamepadpressed(joystick, button) end
  if Importer then return Importer:gamepadpressed(joystick, button) end
  if not Game then return end
  Game:gamepadpressed(joystick, button)
@@ -648,7 +700,7 @@ function love.gamepadreleased(joystick, button)
    end
    return
  end
-  if Studio then return end
+  if Studio then return Studio.gamepadreleased(joystick, button) end
  if Importer then return Importer:gamepadreleased(joystick, button) end
  if not Game then return end
  Game:gamepadreleased(joystick, button)
@@ -668,7 +720,7 @@ function love.gamepadaxis(joystick, axis, value)
    end
    return
  end
-  if Studio then return end
+  if Studio then return Studio.gamepadaxis(joystick, axis, value) end
  if Importer then return Importer:gamepadaxis(joystick, axis, value) end
  if not Game then return end
  Game:gamepadaxis(joystick, axis, value)
@@ -688,7 +740,7 @@ function love.joystickpressed(joystick, button)
    end
    return
  end
-  if Studio then return end
+  if Studio then return Studio.joystickpressed(joystick, button) end
  if Importer then return Importer:joystickpressed(joystick, button) end
  if not Game then return end
  Game:joystickpressed(joystick, button)
@@ -708,7 +760,7 @@ function love.joystickreleased(joystick, button)
    end
    return
  end
-  if Studio then return end
+  if Studio then return Studio.joystickreleased(joystick, button) end
  if Importer then return Importer:joystickreleased(joystick, button) end
  if not Game then return end
  Game:joystickreleased(joystick, button)
@@ -728,7 +780,7 @@ function love.joystickaxis(joystick, axis, value)
    end
    return
  end
-  if Studio then return end
+  if Studio then return Studio.joystickaxis(joystick, axis, value) end
  if Importer then return Importer:joystickaxis(joystick, axis, value) end
  if not Game then return end
  Game:joystickaxis(joystick, axis, value)
@@ -748,7 +800,7 @@ function love.joystickhat(joystick, hat, direction)
    end
    return
  end
-  if Studio then return end
+  if Studio then return Studio.joystickhat(joystick, hat, direction) end
  if Importer then return Importer:joystickhat(joystick, hat, direction) end
  if not Game then return end
  Game:joystickhat(joystick, hat, direction)
@@ -808,6 +860,48 @@ function love.lowmemory()
  if Game then Game:onResume() end
 end

+love.handlers = love.handlers or {}
+
+function love.handlers.audiosuspend()
+  local ChipAudio = package.loaded["src.core.ChipAudio"]
+  if ChipAudio then pcall(ChipAudio.setSuspended, true) end
+  local Sound = package.loaded["src.core.Sound"]
+  if Sound then pcall(Sound.onDeviceReset) end
+end
+
+function love.handlers.audioreset()
+  local ChipAudio = package.loaded["src.core.ChipAudio"]
+  if ChipAudio then
+    pcall(ChipAudio.setSuspended, false)
+    pcall(ChipAudio.rebuildPlayback)
+  end
+  local Music = package.loaded["src.core.Music"]
+  if Music then pcall(Music.onDeviceReset) end
+  local Sound = package.loaded["src.core.Sound"]
+  if Sound then pcall(Sound.onDeviceReset) end
+end
+
+function love.handlers.intent_game(version)
+  if type(version) ~= "string" or version == "" then return end
+  version = version:lower():gsub("^%s+", ""):gsub("%s+$", "")
+  local GameVersion = require("src.core.GameVersion")
+  if GameVersion.VERSIONS and not GameVersion.VERSIONS[version] then return end
+
+  local RomImporter = require("src.import.RomImporter")
+  if not RomImporter.isReady(version) then return end
+
+  local currentVersion = GameVersion.get()
+  if Game and currentVersion == version then
+    return
+  end
+
+  if Game then
+    returnToLauncher()
+  end
+  Importer = nil
+  bootGame(version)
+end
+
 function love.touchpressed(id, x, y, dx, dy, pressure)
  if editorMode then
    -- iOS synthesizes mousepressed for the primary touch; forwarding here
@@ -825,7 +919,7 @@ function love.touchpressed(id, x, y, dx, dy, pressure)
    if love.system.getOS() == "iOS" then return end
    return TouchEditor.touchpressed(id, x, y)
  end
-  if Studio then return end
+  if Studio then return Studio.touchpressed(id, x, y) end
  if Importer then
    -- Both mobiles: FlexLove scroll needs the real touch stream. Clicks are
    -- polled inside the view; the istouch filter on mousepressed still drops
@@ -842,7 +936,7 @@ function love.touchmoved(id, x, y, dx, dy, pressure)
    if love.system.getOS() == "iOS" then return end
    return TouchEditor.touchmoved(id, x, y)
  end
-  if Studio then return end
+  if Studio then return Studio.touchmoved(id, x, y) end
  if Importer then
    return Importer:touchmoved(id, x, y, dx, dy, pressure)
  end
@@ -856,7 +950,7 @@ function love.touchreleased(id, x, y, dx, dy, pressure)
    if love.system.getOS() == "iOS" then return end
    return TouchEditor.touchreleased(id, x, y)
  end
-  if Studio then return end
+  if Studio then return Studio.touchreleased(id, x, y) end
  if Importer then
    return Importer:touchreleased(id, x, y, dx, dy, pressure)
  end
@@ -909,7 +1003,12 @@ function love.mousepressed(x, y, button, istouch)
    if love.system.getOS() == "Android" then return end
    return TouchEditor.mousepressed(x, y, button)
  end
-  if Studio then return Studio.mousepressed(x, y, button) end
+  if Studio then
+    -- Mobile LÖVE sends both a touch event and an `istouch` mouse twin.
+    -- Studio consumes the real finger stream above, so discard the twin.
+    if istouch and (love.system.getOS() == "Android" or love.system.getOS() == "iOS") then return end
+    return Studio.mousepressed(x, y, button)
+  end
  if Importer then
    -- love.touchpressed already forwards the primary touch into FlexLove for
    -- scroll. LÖVE ALSO synthesizes a mouse press for that same touch; if both
@@ -944,7 +1043,10 @@ function love.mousereleased(x, y, button, istouch)
    if love.system.getOS() == "Android" then return end
    return TouchEditor.mousereleased(x, y, button)
  end
-  if Studio then return Studio.mousereleased(x, y, button) end
+  if Studio then
+    if istouch and (love.system.getOS() == "Android" or love.system.getOS() == "iOS") then return end
+    return Studio.mousereleased(x, y, button)
+  end
  if Importer then return end
  if editorMode and EditorApp.mousereleased then
    return EditorApp.mousereleased(x, y, button)
@@ -962,7 +1064,10 @@ function love.mousemoved(x, y, dx, dy, istouch)
    if love.system.getOS() == "Android" then return end
    return TouchEditor.mousemoved(x, y)
  end
-  if Studio then return Studio.mousemoved(x, y) end
+  if Studio then
+    if istouch and (love.system.getOS() == "Android" or love.system.getOS() == "iOS") then return end
+    return Studio.mousemoved(x, y)
+  end
  if editorMode or Importer then return end
  if mouseTouch then
    if Game and love.mouse.isDown(1) then Game:touchmoved("mouse", x, y) end
@@ -1013,11 +1118,16 @@ function love.quit()
  -- docs/modding.md's core.quit_to_launcher entry) may veto returning to
  -- this Lua launcher via that hook. Vanilla behavior (used when no mod
  -- claims the hook) is exactly the condition below.
+  local isAndroid = (love.system and love.system.getOS and love.system.getOS() == "Android")
  local wouldReturnToLauncher = PlatformHooks.quitToLauncher(function()
    return Game and not Importer and not quitToLauncher and not scripted
-      and not launchedIntoGame
+      and (isAndroid or not launchedIntoGame)
  end)
  if wouldReturnToLauncher then
+    if isAndroid then
+      returnToLauncher()
+      return true -- abort this quit; the restart lands back in the launcher
+    end
    quitToLauncher = true
    -- Tell the fresh boot to ignore any boot-straight-into-a-game option this
    -- once, so the restart really does land in the launcher (#887).  A failed
@@ -1029,22 +1139,7 @@ function love.quit()
  pcall(function()
    require("src.core.DiscordPresence").shutdown()
  end)
-  -- LOVE waits for every live love.thread before the process exits, and both
-  -- background workers idle in a loop that only a "quit" command breaks, so
-  -- without this the process outlived the window and the next launch re-entered
-  -- the dead one instead of starting fresh (#339)
-  if package.loaded["src.core.ChipAudio"] then
-    pcall(package.loaded["src.core.ChipAudio"].shutdown)
-  end
-  if package.loaded["src.update.Check"] then
-    pcall(package.loaded["src.update.Check"].shutdown)
-  end
-  -- The launcher's fetch pool is the same story: its workers idle in
-  -- Channel:demand(), which never returns on its own, so a launcher that ever
-  -- touched the network would hang the process on exit (#339's shape again).
-  if package.loaded["src.net.Fetch"] then
-    pcall(package.loaded["src.net.Fetch"].shutdown)
-  end
+  SessionLifecycle.endProcess()
 end

 function love.filedropped(file)
@@ -93,8 +93,9 @@ transport, exactly as a missing curl does.
 love-android 11.5a expects:

 - **JDK 17**
- Android SDK with **API 34**
+- Android SDK with **API 36** (Android 16; latest 36.x Build-Tools)
 - NDK **25.2.9519653** (Apple Silicon host supported)
+- **minSdk 19** (Android 4.4), **targetSdk 36** (Android 16)

 Set `ANDROID_SDK_ROOT` (or `ANDROID_HOME`), or let the script write
 `local.properties` when it finds `~/Library/Android/sdk`.
@@ -109,10 +110,10 @@ The APK lands under `app/build/outputs/apk/embedNoRecord/debug/`.

 `app/src/embed/assets/game.love` - zip of `main.lua`, `conf.lua`, `src/`,
 `libs/` (the vendored FlexLove toolkit the launcher UI needs), `data/`,
-`assets/`, and the Red, Blue, and Yellow ROM manifests. The Android
-packer verifies the Yellow manifest before it packages; if a partial source
-export omitted it, it restores the file from this checkout's Git data and then
-falls back to the project's GitHub copy. Generated game data,
+`assets/`, and the Red, Blue, Yellow, Gold, and Silver ROM manifests. The
+Android packer verifies the Yellow, Gold, and Silver manifests before it
+packages; if a partial source export omitted one, it restores the file from
+this checkout's Git data and then falls back to the project's GitHub copy. Generated game data,
 scripts, tests, and mobile build sources are excluded.

 ## Branding (applied by the build script)
@@ -122,15 +123,24 @@ scripts, tests, and mobile build sources are excluded.
 | `app.application_id` | `com.theboisclub.pokemonred` |
 | `app.name` | Pokemon Red |
 | `app.orientation` | `fullUser`. This is only the manifest default: SDL requests FULL_SENSOR at window creation (resizable window, no `SDL_HINT_ORIENTATIONS`), and `GameActivity.setOrientationBis` remaps that to FULL_USER so the device's rotation lock is honoured. |
-| `app.version_name` / `app.version_code` | set from `--version X.Y.Z` (code = major*10000 + minor*100 + patch); left as-is if `--version` is omitted |
-| Permissions | RECORD_AUDIO / WRITE_EXTERNAL_STORAGE stripped; VIBRATE + BLUETOOTH + INTERNET (link play, mod index) + ACTIVITY_RECOGNITION (step bridge) kept |
+| `app.version_name` / `app.version_code` | set from `--version X.Y.Z` (code = major*1,000,000 + minor*1,000 + patch); left as-is if `--version` is omitted |
+| Permissions | RECORD_AUDIO / WRITE_EXTERNAL_STORAGE stripped; VIBRATE + BLUETOOTH + INTERNET (link play, mod index) + ACTIVITY_RECOGNITION (step bridge) kept; REQUEST_INSTALL_PACKAGES is limited to the user-confirmed full-update installer |

 ## Releases

 `.github/workflows/release.yml` builds the APK with `--version` set to the
 release version and publishes it alongside the macOS/Windows/Linux builds as
-`PokemonRed-<version>-android.apk`.
+`gen1recomp-<version>-android.apk`.

 ## Signing

-Signed with the default Android keystore (no setup required).
+Production APKs are built with `scripts/build_android.sh --release`. They must
+be signed with the same long-lived certificate as the currently installed app:
+Android's Package Installer rejects an update with a different signing
+certificate. Store that keystore and its passwords only in CI secrets, expose
+them as `GEN1RECOMP_ANDROID_KEYSTORE`,
+`GEN1RECOMP_ANDROID_KEYSTORE_PASSWORD`, `GEN1RECOMP_ANDROID_KEY_ALIAS`, and
+`GEN1RECOMP_ANDROID_KEY_PASSWORD`, and never commit the keystore. A newly
+created certificate cannot update users who have an APK signed by a different
+legacy key; those users need one final manual reinstall before in-app updates
+can take over.
@@ -41,7 +41,7 @@ Quick Start:
 Before you start, install JDK 17 (not later not earlier). If you intend to build from Android Studio, skip this step as
 Android Studio bundles its own JDK 17.

-Install Android SDK with SDK API 34 (34.x.y) and Android NDK 25.2.9519653, set the environment variable
+Install Android SDK with SDK API 36 (latest 36.x Build-Tools) and Android NDK 25.2.9519653, set the environment variable
 `ANDROID_SDK_ROOT` to your Android SDK location and run:

 ```
@@ -10,9 +10,12 @@ android {
        applicationId project.properties["app.application_id"]
        versionCode project.properties["app.version_code"].toInteger()
        versionName project.properties["app.version_name"]
-        minSdk 16
-        compileSdk 34
-        targetSdk 34
+        // NDK r25 no longer supports API 16; API 19 is Android 4.4 and keeps
+        // the native toolchain and package-installer bridge on a supported ABI.
+        minSdk 19
+        // Android 16 / API 36: current Android distribution target.
+        compileSdk 36
+        targetSdk 36
        
        def getAppName = {
            def nameArray = project.properties["app.name_byte_array"]
@@ -38,10 +41,31 @@ android {
            ORIENTATION:project.properties["app.orientation"],
        ]
    }
+    // Release signing lives outside the repository. The release build script
+    // requires all five values below, while debug builds intentionally remain
+    // usable without them.
+    def releaseStore = System.getenv("GEN1RECOMP_ANDROID_KEYSTORE")
+    def releaseStorePassword = System.getenv("GEN1RECOMP_ANDROID_KEYSTORE_PASSWORD")
+    def releaseKeyAlias = System.getenv("GEN1RECOMP_ANDROID_KEY_ALIAS")
+    def releaseKeyPassword = System.getenv("GEN1RECOMP_ANDROID_KEY_PASSWORD")
+    def hasReleaseSigning = releaseStore && releaseStorePassword && releaseKeyAlias && releaseKeyPassword
+
+    if (hasReleaseSigning) {
+        signingConfigs {
+            release {
+                storeFile file(releaseStore)
+                storePassword releaseStorePassword
+                keyAlias releaseKeyAlias
+                keyPassword releaseKeyPassword
+            }
+        }
+    }
+
    buildTypes {
        release {
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            if (hasReleaseSigning) signingConfig signingConfigs.release
        }
    }
    flavorDimensions = ['mode', 'recording']
@@ -8,6 +8,10 @@
       the link screen shows as "(Operation not permitted)" (issue #287).
       scripts/build_android.sh must not strip this again. -->
  <uses-permission android:name="android.permission.INTERNET" />
+  <!-- Required only to hand a checksum-verified, user-selected GitHub release
+       APK to Android's own Package Installer. Android still shows the install
+       confirmation and enforces package/signing-key/version compatibility. -->
+  <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
  <!-- Step bridge: love.system.syncHealthSteps reads the hardware step
       counter, which Android 10+ gates behind this runtime permission.
       Requested only on the first sync call (the Pokéwalker mod's SYNC
@@ -26,20 +30,37 @@
  <!-- Low latency audio -->
  <uses-feature android:name="android.hardware.audio.low_latency" android:required="false" />
  <uses-feature android:name="android.hardware.audio.pro" android:required="false" />
+  <!-- love.sensor (accelerometer). No runtime permission needed on Android;
+       this is a Play Store filtering hint only, so required=false like the
+       other optional hardware features above. -->
+  <uses-feature android:name="android.hardware.sensor.accelerometer" android:required="false" />

  <application
      android:allowBackup="true"
-      android:icon="@drawable/love"
+      android:icon="@mipmap/ic_launcher"
+      android:roundIcon="@mipmap/ic_launcher_round"
      android:label="${NAME}" >
    <meta-data
        android:name="android.allow_multiple_resumed_activities"
        android:value="true" />
+    <!-- The full-update APK is copied into this small cache subdirectory
+         before it is handed to Package Installer. Keep the provider private
+         and expose only that directory, never a storage root. -->
+    <provider
+        android:name="androidx.core.content.FileProvider"
+        android:authorities="${applicationId}.full_update_provider"
+        android:exported="false"
+        android:grantUriPermissions="true">
+      <meta-data
+          android:name="android.support.FILE_PROVIDER_PATHS"
+          android:resource="@xml/full_update_paths" />
+    </provider>
    <activity
        android:name="org.love2d.android.GameActivity"
        android:exported="true"
-        android:configChanges="orientation|screenSize|smallestScreenSize|screenLayout|keyboard|keyboardHidden|navigation"
+        android:configChanges="orientation|screenSize|smallestScreenSize|screenLayout|keyboard|keyboardHidden|navigation|uiMode|density|fontScale|locale|layoutDirection|colorMode"
        android:label="${NAME}"
-        android:launchMode="singleInstance"
+        android:launchMode="singleTask"
        android:screenOrientation="${ORIENTATION}"
        android:resizeableActivity="false"
        android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >
@@ -54,7 +75,7 @@
    </activity>
    <activity
        android:name="org.love2d.android.GameActivity$SecondaryActivity"
-        android:configChanges="orientation|screenSize|smallestScreenSize|screenLayout|keyboard|keyboardHidden|navigation"
+        android:configChanges="orientation|screenSize|smallestScreenSize|screenLayout|keyboard|keyboardHidden|navigation|uiMode|density|fontScale|locale|layoutDirection|colorMode"
        android:excludeFromRecents="true"
        android:exported="false"
        android:launchMode="singleTask"
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
@@ -3,4 +3,10 @@
    <color name="colorPrimary">#3F51B5</color>
    <color name="colorPrimaryDark">#303F9F</color>
    <color name="colorAccent">#FF4081</color>
+    <color name="ic_launcher_background">#FFFFFF</color>
+    <color name="shortcut_red">#E53935</color>
+    <color name="shortcut_blue">#1E88E5</color>
+    <color name="shortcut_yellow">#FDD835</color>
+    <color name="shortcut_gold">#D4AF37</color>
+    <color name="shortcut_silver">#BEC6D2</color>
 </resources>
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Deliberately narrow: FileProvider may grant only the staged APK, never
+     arbitrary app, external, or shared storage. -->
+<paths xmlns:android="http://schemas.android.com/apk/res/android">
+    <cache-path name="full_update" path="full-update/" />
+</paths>
@@ -18,7 +18,8 @@ buildscript {
        mavenCentral()
    }
    dependencies {
-        classpath 'com.android.tools.build:gradle:8.1.1'
+        // Android 16 / API 36 requires Android Gradle Plugin 8.9+.
+        classpath 'com.android.tools.build:gradle:8.9.2'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
@@ -15,7 +15,6 @@ app.version_name=11.5a
 # No need to modify anything past this line!
 android.enableJetifier=false
 android.useAndroidX=true
-android.defaults.buildfeatures.buildconfig=true
 android.nonTransitiveRClass=true
 android.nonFinalResIds=true
 app.name=gen1recomp
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.11.1-bin.zip
 networkTimeout=10000
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
@@ -10,9 +10,9 @@ android {
    ndkVersion '25.2.9519653'

    defaultConfig {
-        minSdk 16
-        compileSdk 34
-        targetSdk 34
+        minSdk 19
+        compileSdk 36
+        targetSdk 36
        externalNativeBuild {
            ndkBuild {
                arguments "-j" + Runtime.runtime.availableProcessors()
@@ -63,8 +63,7 @@ android {

    buildTypes {
        release {
-            minifyEnabled true
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            minifyEnabled false
        }
        debug {
            ndk {
@@ -45,6 +45,11 @@
 // own, which can name a different volume on merged / adopted-SD storage.
 #include "filesystem/Filesystem.h"

+#include "common/Module.h"
+#include "audio/Audio.h"
+#include "audio/openal/Audio.h"
+#include "event/Event.h"
+
 namespace love
 {
 namespace android
@@ -278,6 +283,104 @@ bool restartApp()
 	return result;
 }

+bool installApk(const char *path)
+{
+	if (path == nullptr || path[0] == '\0')
+		return false;
+
+	JNIEnv *env = (JNIEnv*) SDL_AndroidGetJNIEnv();
+	// This may be called from Lua's main thread, but use the activity object
+	// class just like httpDownload so a future worker caller does not depend on
+	// the system JNI class loader finding the app class.
+	void *rawActivity = SDL_AndroidGetActivity();
+	if (rawActivity == nullptr)
+		return false;
+	jobject activityObj = (jobject) rawActivity;
+	jclass activity = env->GetObjectClass(activityObj);
+	env->DeleteLocalRef(activityObj);
+
+	jmethodID method = env->GetStaticMethodID(activity, "installApk",
+		"(Ljava/lang/String;Ljava/lang/String;)Z");
+	if (method == nullptr)
+	{
+		env->ExceptionClear();
+		env->DeleteLocalRef(activity);
+		return false;
+	}
+
+	jstring jpath = env->NewStringUTF(path);
+	jstring jroot = env->NewStringUTF(bridgeSaveDirectory());
+	jboolean result = env->CallStaticBooleanMethod(activity, method, jpath, jroot);
+	env->DeleteLocalRef(jroot);
+	env->DeleteLocalRef(jpath);
+	env->DeleteLocalRef(activity);
+	return result;
+}
+
+bool updateAppShortcuts(const std::vector<std::string> &versions)
+{
+	JNIEnv *env = (JNIEnv*) SDL_AndroidGetJNIEnv();
+	jclass activity = env->FindClass("org/love2d/android/GameActivity");
+	if (activity == nullptr)
+		return false;
+
+	jmethodID method = env->GetStaticMethodID(activity, "updateAppShortcuts", "([Ljava/lang/String;)Z");
+	if (method == nullptr)
+	{
+		env->ExceptionClear();
+		env->DeleteLocalRef(activity);
+		return false;
+	}
+
+	jclass stringClass = env->FindClass("java/lang/String");
+	jobjectArray array = env->NewObjectArray((jsize) versions.size(), stringClass, nullptr);
+	for (size_t i = 0; i < versions.size(); ++i)
+	{
+		jstring jstr = env->NewStringUTF(versions[i].c_str());
+		env->SetObjectArrayElement(array, (jsize) i, jstr);
+		env->DeleteLocalRef(jstr);
+	}
+
+	jboolean result = env->CallStaticBooleanMethod(activity, method, array);
+
+	env->DeleteLocalRef(array);
+	env->DeleteLocalRef(stringClass);
+	env->DeleteLocalRef(activity);
+	return result;
+}
+
+std::string getLaunchGame()
+{
+	JNIEnv *env = (JNIEnv*) SDL_AndroidGetJNIEnv();
+	jclass activity = env->FindClass("org/love2d/android/GameActivity");
+	if (activity == nullptr)
+		return "";
+
+	jmethodID method = env->GetStaticMethodID(activity, "getLaunchGame", "()Ljava/lang/String;");
+	if (method == nullptr)
+	{
+		env->ExceptionClear();
+		env->DeleteLocalRef(activity);
+		return "";
+	}
+
+	jstring jgame = (jstring) env->CallStaticObjectMethod(activity, method);
+	if (jgame == nullptr)
+	{
+		env->DeleteLocalRef(activity);
+		return "";
+	}
+
+	const char *str = env->GetStringUTFChars(jgame, nullptr);
+	std::string result = (str != nullptr) ? str : "";
+	if (str != nullptr)
+		env->ReleaseStringUTFChars(jgame, str);
+
+	env->DeleteLocalRef(jgame);
+	env->DeleteLocalRef(activity);
+	return result;
+}
+
 bool httpDownload(const char *url, const char *destPath, const char *userAgent, const char *accept)
 {
 	if (url == nullptr || destPath == nullptr)
@@ -374,6 +477,104 @@ bool httpPost(const char *url, const char *body, int bodyLen, const char *conten
 	return result;
 }

+bool httpRequest(const char *url, const char *method,
+	const char *const *headerPairs, int headerPairCount,
+	const char *body, int bodyLen, const char *userAgent, std::string &out)
+{
+	out.clear();
+	if (url == nullptr)
+		return false;
+	if (headerPairCount < 0 || (headerPairCount > 0 && headerPairs == nullptr))
+		return false;
+
+	JNIEnv *env = (JNIEnv*) SDL_AndroidGetJNIEnv();
+	// Same resolution rule as httpDownload: the activity's own class via
+	// SDL_AndroidGetActivity, never FindClass for an app class -- save sync
+	// runs on a love.thread worker, whose class loader cannot see them.
+	jobject activityObj = (jobject) SDL_AndroidGetActivity();
+	if (activityObj == nullptr)
+		return false;
+	jclass activity = env->GetObjectClass(activityObj);
+	env->DeleteLocalRef(activityObj);
+
+	// Old APK / new liblove skew: report "no transport" instead of aborting
+	// on a missing method (#597).
+	jmethodID method_id = env->GetStaticMethodID(activity, "httpRequest",
+		"(Ljava/lang/String;Ljava/lang/String;[Ljava/lang/String;[BLjava/lang/String;)[B");
+	if (method_id == nullptr)
+	{
+		env->ExceptionClear();
+		env->DeleteLocalRef(activity);
+		return false;
+	}
+
+	jobjectArray jheaders = nullptr;
+	if (headerPairCount > 0)
+	{
+		// java/lang/String, unlike an app class, resolves from any thread.
+		jclass stringClass = env->FindClass("java/lang/String");
+		if (stringClass == nullptr)
+		{
+			env->ExceptionClear();
+			env->DeleteLocalRef(activity);
+			return false;
+		}
+		jheaders = env->NewObjectArray((jsize) headerPairCount, stringClass, nullptr);
+		env->DeleteLocalRef(stringClass);
+		if (jheaders == nullptr)
+		{
+			env->ExceptionClear();
+			env->DeleteLocalRef(activity);
+			return false;
+		}
+		for (int i = 0; i < headerPairCount; i++)
+		{
+			jstring field = env->NewStringUTF(headerPairs[i] != nullptr ? headerPairs[i] : "");
+			env->SetObjectArrayElement(jheaders, (jsize) i, field);
+			if (field != nullptr)
+				env->DeleteLocalRef(field);
+		}
+	}
+
+	jstring jurl = env->NewStringUTF(url);
+	jstring jmethod = env->NewStringUTF(method != nullptr ? method : "GET");
+	// raw bytes across the bridge, as httpPost does: a request body is JSON
+	// carrying a base64 save, and a jstring would run it through modified UTF-8
+	jbyteArray jbody = nullptr;
+	if (body != nullptr && bodyLen >= 0)
+	{
+		jbody = env->NewByteArray((jsize) bodyLen);
+		if (jbody != nullptr && bodyLen > 0)
+			env->SetByteArrayRegion(jbody, 0, (jsize) bodyLen, (const jbyte*) body);
+	}
+	jstring jua = env->NewStringUTF(userAgent != nullptr ? userAgent : "gen1recomp");
+
+	jobject result = env->CallStaticObjectMethod(activity, method_id, jurl, jmethod,
+		jheaders, jbody, jua);
+
+	env->DeleteLocalRef(jurl);
+	env->DeleteLocalRef(jmethod);
+	if (jheaders != nullptr)
+		env->DeleteLocalRef(jheaders);
+	if (jbody != nullptr)
+		env->DeleteLocalRef(jbody);
+	env->DeleteLocalRef(jua);
+	env->DeleteLocalRef(activity);
+
+	if (result == nullptr)
+		return false;
+
+	jbyteArray bytes = (jbyteArray) result;
+	jsize length = env->GetArrayLength(bytes);
+	if (length > 0)
+	{
+		out.resize((size_t) length);
+		env->GetByteArrayRegion(bytes, 0, length, (jbyte*) &out[0]);
+	}
+	env->DeleteLocalRef(result);
+	return true;
+}
+
 /*
 * TLS sockets. Same resolution rule as httpDownload above -- the activity's
 * own class, never FindClass -- and the same tolerance for an old APK: a
@@ -1320,4 +1521,98 @@ const char *love_android_poll_secondary_touch()
 	return event.empty() ? nullptr : event.c_str();
 }

+static love::audio::openal::Audio *love_android_openal_audio()
+{
+	love::audio::Audio *audio = love::Module::getInstance<love::audio::Audio>(love::Module::M_AUDIO);
+
+	if (audio == nullptr)
+		return nullptr;
+
+	const char *name = audio->getName();
+
+	if (name == nullptr || strcmp(name, "love.audio.openal") != 0)
+		return nullptr;
+
+	return (love::audio::openal::Audio *) audio;
+}
+
+extern "C" JNIEXPORT void JNICALL
+Java_org_love2d_android_GameActivity_nativeAudioFocusLost(JNIEnv *env, jclass cls)
+{
+	(void) env;
+	(void) cls;
+
+	love::audio::openal::pushAudioSuspendEvent();
+
+	love::audio::openal::Audio *audio = love_android_openal_audio();
+
+	if (audio != nullptr)
+		audio->pauseContext();
+}
+
+extern "C" JNIEXPORT void JNICALL
+Java_org_love2d_android_GameActivity_nativeAudioFocusGained(JNIEnv *env, jclass cls)
+{
+	(void) env;
+	(void) cls;
+
+	love::audio::openal::Audio *audio = love_android_openal_audio();
+
+	if (audio == nullptr)
+		return;
+
+	audio->resumeContext();
+
+	if (!audio->isDeviceConnected())
+		audio->reopenDevice();
+
+	love::audio::openal::pushAudioResetEvent();
+}
+
+extern "C" JNIEXPORT void JNICALL
+Java_org_love2d_android_GameActivity_nativeAudioDeviceChanged(JNIEnv *env, jclass cls)
+{
+	(void) env;
+	(void) cls;
+
+	love::audio::openal::Audio *audio = love_android_openal_audio();
+
+	if (audio == nullptr)
+		return;
+
+	audio->pauseContext();
+	audio->reopenDevice();
+	audio->resumeContext();
+
+	love::audio::openal::pushAudioResetEvent();
+}
+
+static void pushGameIntentEvent(const char *game)
+{
+	auto eventmodule = love::Module::getInstance<love::event::Event>(love::Module::M_EVENT);
+	if (eventmodule == nullptr || game == nullptr)
+		return;
+
+	std::vector<love::Variant> args;
+	args.push_back(love::Variant(std::string(game)));
+
+	love::event::Message *msg = new love::event::Message("intent_game", args);
+	eventmodule->push(msg);
+	msg->release();
+}
+
+extern "C" JNIEXPORT void JNICALL
+Java_org_love2d_android_GameActivity_nativeOnGameIntent(JNIEnv *env, jclass cls, jstring game)
+{
+	(void) cls;
+	if (game == nullptr)
+		return;
+	const char *str = env->GetStringUTFChars(game, nullptr);
+	if (str != nullptr)
+	{
+		pushGameIntentEvent(str);
+		env->ReleaseStringUTFChars(game, str);
+	}
+}
+
 #endif // LOVE_ANDROID
@@ -90,6 +90,22 @@ bool syncHealthSteps();
 **/
 bool restartApp();

+/**
+ * Stages a checksum-verified APK from the current save directory and starts
+ * Android's user-confirmed Package Installer flow. Android-only.
+ **/
+bool installApk(const char *path);
+
+/**
+ * Dynamic App Shortcuts: updates Android ShortcutManager with ready game versions.
+ **/
+bool updateAppShortcuts(const std::vector<std::string> &versions);
+
+/**
+ * Returns the game version requested via initial launch Intent (if any).
+ **/
+std::string getLaunchGame();
+
 /**
 * Blocking HTTPS GET into destPath (GameActivity.httpDownload). Android has
 * no curl binary, so this is the transport src/core/HostShell.lua uses there
@@ -106,6 +122,21 @@ bool httpDownload(const char *url, const char *destPath, const char *userAgent,
 **/
 bool httpPost(const char *url, const char *body, int bodyLen, const char *contentType, const char *userAgent);

+/**
+ * Blocking HTTPS request with a method, headers and a byte body
+ * (GameActivity.httpRequest). What save sync needs and neither of the two
+ * above can give it: PUT, per-request auth headers, and the response body of
+ * a 4xx as well as a 2xx. headerPairs is a flat name, value array of
+ * headerPairCount entries; body/userAgent may be null. `out` receives the
+ * Java side's envelope -- a head line of "STATUS <code>" or "ERROR <text>",
+ * a newline, then the raw response bytes. False means the platform has no
+ * such bridge at all (an old APK under a newer liblove), which the Lua side
+ * reports as "update the app" rather than as a failed request.
+ **/
+bool httpRequest(const char *url, const char *method,
+	const char *const *headerPairs, int headerPairCount,
+	const char *body, int bodyLen, const char *userAgent, std::string &out);
+
 /**
 * TLS client sockets (GameActivity.tls*, implemented by TlsSocket.java).
 * LuaSocket, which is what LOVE ships, does TCP only, so wss:// is otherwise
@@ -22,6 +22,7 @@
 #include "common/delay.h"
 #include "RecordingDevice.h"
 #include "sound/Decoder.h"
+#include "event/Event.h"

 #include <cstdlib>
 #include <iostream>
@@ -30,6 +31,10 @@
 #include "common/ios.h"
 #endif

+#ifndef ALC_CONNECTED
+#define ALC_CONNECTED 0x313
+#endif
+
 namespace love
 {
 namespace audio
@@ -37,9 +42,35 @@ namespace audio
 namespace openal
 {

-Audio::PoolThread::PoolThread(Pool *pool)
-	: pool(pool)
+static const int DISCONNECT_CHECK_INTERVAL = 200;
+
+static void pushAudioEvent(const char *name)
+{
+	auto eventmodule = Module::getInstance<event::Event>(Module::M_EVENT);
+
+	if (eventmodule == nullptr)
+		return;
+
+	event::Message *msg = new event::Message(name);
+	eventmodule->push(msg);
+	msg->release();
+}
+
+void pushAudioSuspendEvent()
+{
+	pushAudioEvent("audiosuspend");
+}
+
+void pushAudioResetEvent()
+{
+	pushAudioEvent("audioreset");
+}
+
+Audio::PoolThread::PoolThread(Audio *audio, Pool *pool)
+	: audio(audio)
+	, pool(pool)
 	, finish(false)
+	, paused(false)
 {
 	threadName = "AudioPool";
 }
@@ -51,6 +82,8 @@ Audio::PoolThread::~PoolThread()

 void Audio::PoolThread::threadFunction()
 {
+	int disconnectCheck = 0;
+
 	while (true)
 	{
 		{
@@ -61,7 +94,23 @@ void Audio::PoolThread::threadFunction()
 			}
 		}

+		if (paused.load())
+		{
+			disconnectCheck = 0;
+			sleep(5);
+			continue;
+		}
+
 		pool->update();
+
+		if (audio != nullptr && ++disconnectCheck >= DISCONNECT_CHECK_INTERVAL)
+		{
+			disconnectCheck = 0;
+
+			if (!audio->isDeviceConnected() && audio->reopenDevice())
+				pushAudioResetEvent();
+		}
+
 		sleep(5);
 	}
 }
@@ -72,6 +121,11 @@ void Audio::PoolThread::setFinish()
 	finish = true;
 }

+void Audio::PoolThread::setPaused(bool paused)
+{
+	this->paused.store(paused);
+}
+
 ALenum Audio::getFormat(int bitDepth, int channels)
 {
 	if (bitDepth != 8 && bitDepth != 16)
@@ -99,6 +153,8 @@ Audio::Audio()
 	, pool(nullptr)
 	, poolThread(nullptr)
 	, distanceModel(DISTANCE_INVERSE_CLAMPED)
+	, alcReopenDeviceSOFT(nullptr)
+	, reopenChecked(false)
 {
 	// Before opening new device, check if recording
 	// is requested.
@@ -189,13 +245,6 @@ Audio::Audio()
 		throw;
 	}

-	poolThread = new PoolThread(pool);
-	poolThread->start();
-	
-#ifdef LOVE_IOS
-	love::ios::initAudioSessionInterruptionHandler();
-#endif
-
 #ifdef LOVE_ANDROID
 	bool hasPauseDeviceExt = alcIsExtensionPresent(device, "ALC_SOFT_pause_device") == ALC_TRUE;
 	alcDevicePauseSOFT = hasPauseDeviceExt
@@ -205,6 +254,13 @@ Audio::Audio()
 		? (LPALCDEVICERESUMESOFT) alcGetProcAddress(device, "alcDeviceResumeSOFT")
 		: nullptr;
 #endif
+
+	poolThread = new PoolThread(this, pool);
+	poolThread->start();
+
+#ifdef LOVE_IOS
+	love::ios::initAudioSessionInterruptionHandler();
+#endif
 }

 Audio::~Audio()
@@ -314,6 +370,9 @@ std::vector<love::audio::Source*> Audio::pause()

 void Audio::pauseContext()
 {
+	if (poolThread != nullptr)
+		poolThread->setPaused(true);
+
 #ifdef LOVE_ANDROID
 	if (alcDevicePauseSOFT)
 		alcDevicePauseSOFT(device);
@@ -350,6 +409,52 @@ void Audio::resumeContext()
 	if (context && alcGetCurrentContext() != context)
 		alcMakeContextCurrent(context);
 #endif
+
+	if (poolThread != nullptr)
+		poolThread->setPaused(false);
+}
+
+bool Audio::reopenDevice()
+{
+	if (device == nullptr)
+		return false;
+
+	thread::Lock lock(deviceMutex);
+
+	if (!reopenChecked)
+	{
+		reopenChecked = true;
+
+		if (alcIsExtensionPresent(device, "ALC_SOFT_reopen_device") == ALC_TRUE)
+			alcReopenDeviceSOFT = (LPALCREOPENDEVICESOFT) alcGetProcAddress(device, "alcReopenDeviceSOFT");
+	}
+
+	if (alcReopenDeviceSOFT == nullptr)
+		return false;
+
+	alcGetError(device);
+
+	return alcReopenDeviceSOFT(device, nullptr, nullptr) == ALC_TRUE;
+}
+
+bool Audio::isDeviceConnected()
+{
+	if (device == nullptr)
+		return false;
+
+	thread::Lock lock(deviceMutex);
+
+	if (alcIsExtensionPresent(device, "ALC_EXT_disconnect") != ALC_TRUE)
+		return true;
+
+	ALCint connected = 1;
+	alcGetError(device);
+	alcGetIntegerv(device, ALC_CONNECTED, 1, &connected);
+
+	if (alcGetError(device) != ALC_NO_ERROR)
+		return true;
+
+	return connected != 0;
 }

 void Audio::setVolume(float volume)
@@ -22,6 +22,7 @@
 #define LOVE_AUDIO_OPENAL_AUDIO_H

 // STD
+#include <atomic>
 #include <queue>
 #include <map>
 #include <vector>
@@ -97,6 +98,8 @@ public:
 	std::vector<love::audio::Source*> pause();
 	void pauseContext();
 	void resumeContext();
+	bool reopenDevice();
+	bool isDeviceConnected();
 	void setVolume(float volume);
 	float getVolume() const;

@@ -155,6 +158,7 @@ private:
 	class PoolThread: public thread::Threadable
 	{
 	protected:
+		Audio *audio;
 		Pool *pool;

 		// Set this to true when the thread should finish.
@@ -162,13 +166,16 @@ private:
 		// will read from it.
 		volatile bool finish;

+		std::atomic<bool> paused;
+
 		// finish lock
 		love::thread::MutexRef mutex;

 	public:
-		PoolThread(Pool *pool);
+		PoolThread(Audio *audio, Pool *pool);
 		virtual ~PoolThread();
 		void setFinish();
+		void setPaused(bool paused);
 		void threadFunction();
 	};

@@ -177,6 +184,13 @@ private:
 	DistanceModel distanceModel;
 	//float metersPerUnit = 1.0;

+#ifndef ALC_SOFT_reopen_device
+	typedef ALCboolean (ALC_APIENTRY*LPALCREOPENDEVICESOFT)(ALCdevice *device, const ALCchar *deviceName, const ALCint *attribs);
+#endif
+	LPALCREOPENDEVICESOFT alcReopenDeviceSOFT;
+	bool reopenChecked;
+	love::thread::MutexRef deviceMutex;
+
 #ifdef LOVE_ANDROID
 #	ifndef ALC_SOFT_pause_device
 	typedef void (ALC_APIENTRY*LPALCDEVICEPAUSESOFT)(ALCdevice *device);
@@ -188,6 +202,9 @@ private:
 #endif
 }; // Audio

+void pushAudioSuspendEvent();
+void pushAudioResetEvent();
+
 #ifdef ALC_EXT_EFX
 // Effect objects
 extern LPALGENEFFECTS alGenEffects;
@@ -245,6 +245,35 @@ bool System::restartApp() const
 #endif
 }

+bool System::installApk(const char *path) const
+{
+#ifdef LOVE_ANDROID
+	return love::android::installApk(path);
+#else
+	LOVE_UNUSED(path);
+	return false;
+#endif
+}
+
+bool System::updateShortcuts(const std::vector<std::string> &versions) const
+{
+#ifdef LOVE_ANDROID
+	return love::android::updateAppShortcuts(versions);
+#else
+	LOVE_UNUSED(versions);
+	return false;
+#endif
+}
+
+std::string System::getLaunchGame() const
+{
+#ifdef LOVE_ANDROID
+	return love::android::getLaunchGame();
+#else
+	return "";
+#endif
+}
+
 bool System::httpDownload(const char *url, const char *destPath,
 	const char *userAgent, const char *accept) const
 {
@@ -274,6 +303,27 @@ bool System::httpPost(const char *url, const char *body, int bodyLen,
 #endif
 }

+bool System::httpRequest(const char *url, const char *method,
+	const char *const *headerPairs, int headerPairCount,
+	const char *body, int bodyLen, const char *userAgent,
+	std::string &out) const
+{
+#ifdef LOVE_ANDROID
+	return love::android::httpRequest(url, method, headerPairs, headerPairCount,
+		body, bodyLen, userAgent, out);
+#else
+	LOVE_UNUSED(url);
+	LOVE_UNUSED(method);
+	LOVE_UNUSED(headerPairs);
+	LOVE_UNUSED(headerPairCount);
+	LOVE_UNUSED(body);
+	LOVE_UNUSED(bodyLen);
+	LOVE_UNUSED(userAgent);
+	out.clear();
+	return false;
+#endif
+}
+
 int System::tlsOpen(const char *host, int port) const
 {
 #ifdef LOVE_ANDROID
--- a/Show More
+++ b/Show More