feat(switch): build fused gen1recomp NRO

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/switch/build_fused.sh

@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+# Build fused gen1recomp Switch NRO (romfs game.love + nacp + icon).
+#
+# Usage: scripts/switch/build_fused.sh GAME_LOVE VERSION OUT_NRO
+
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "$0")/../.." && pwd)"
+LOVE_NX_TAG="11.5-nx1"
+LOVE_NX_DIR="$ROOT/.bazinga/love-nx/$LOVE_NX_TAG"
+LOVE_ELF="$LOVE_NX_DIR/love.elf"
+ICON="$ROOT/assets/switch/icon.jpg"
+APP_NAME="gen1recomp"
+BUNDLE_ID="com.theboisclub.pokemonred"
+
+GAME_LOVE="${1:-}"
+VERSION="${2:-}"
+OUT_NRO="${3:-}"
+
+fail() { printf 'error: %s\n' "$*" >&2; exit 1; }
+say()  { printf '\033[1;32m==>\033[0m %s\n' "$*"; }
+
+[ -n "$GAME_LOVE" ] && [ -n "$VERSION" ] && [ -n "$OUT_NRO" ] \
+  || fail "usage: $0 GAME_LOVE VERSION OUT_NRO"
+
+[ -f "$GAME_LOVE" ] || fail "missing game.love at $GAME_LOVE"
+
+"$ROOT/scripts/switch/verify_love_nx.sh"
+
+command -v nacptool >/dev/null \
+  || fail "nacptool not found (install devkitPro switch-dev; never download love-nx latest)"
+command -v elf2nro >/dev/null \
+  || fail "elf2nro not found (install devkitPro switch-dev; never download love-nx latest)"
+
+[ -f "$ICON" ] || fail "missing Switch icon at $ICON"
+
+WORK="$(mktemp -d "${TMPDIR:-/tmp}/gen1recomp-fused.XXXXXX")"
+trap 'rm -rf "$WORK"' EXIT
+
+ROMFS_DIR="$WORK/romfs"
+mkdir -p "$ROMFS_DIR"
+cp "$GAME_LOVE" "$ROMFS_DIR/game.love"
+
+NACP="$WORK/control.nacp"
+nacptool --create "$APP_NAME" "$BUNDLE_ID" "$VERSION" "$NACP"
+
+say "building fused NRO with pinned love.elf"
+elf2nro "$LOVE_ELF" "$OUT_NRO" \
+  --icon="$ICON" \
+  --nacp="$NACP" \
+  --romfsdir="$ROMFS_DIR"
+
+mkdir -p "$(dirname "$OUT_NRO")"
+shasum -a 256 "$OUT_NRO" | awk '{print $1}' > "${OUT_NRO}.sha256"
+say "fused NRO: $OUT_NRO"
+say "sha256: $(cat "${OUT_NRO}.sha256")"