api upgrades, windows dev tools, and android fixes (#299)

* pop up a fake save

* add CI to dev branch

* Make ROM-free test tiers actually run on Windows (#267)

Suite discovery, the extension-point catalog scan, mod test-dir pickup,
and the meta-coverage corpus all shelled out to ls/find/test -d, which do
not exist in cmd.exe. Every listing came back empty on Windows, so tiers
ran 0 suites and still reported ALL TESTS PASSED.

Add portable probes to tests/fs_io.lua (same Unix commands on
Linux/macOS; dir /b and a shell-free rename-self existence check on
Windows) and rewire the four call sites to them. 15/15 engine suites and
2/2 modkit suites now genuinely run and pass on Windows.

Fixes #266

Co-authored-by: johnjohto <johnjohto@users.noreply.github.com>

* intro api upgrade (#294)

* intro api upgrade

* api updates

* fix tests

* updated templates

* android fixes for mods and saves (#297)

* Android SCALING fixes (#298)

* android fixes for mods and saves

* perhaps this is the true scaling android issue fix

---------

Co-authored-by: johnjohto <johtoboy@atomicmail.io>
Co-authored-by: johnjohto <johnjohto@users.noreply.github.com>

tests/modkit/catalog.lua

@@ -10,22 +10,12 @@
 -- call site exists.
 
 local Schemas = require("src.mods.Schemas")
+local FsIo = require("tests.fs_io")
 
 local Catalog = {}
 
 local function luaFilesUnder(dir)
-  local files = {}
-  -- -L follows symlinks: a checkout that symlinks src/ (worktrees, the
-  -- ROM-free CI probe) would otherwise scan nothing and hand every gate an
-  -- empty catalog to pass vacuously against
-  local pipe = io.popen("find -L " .. dir .. " -name '*.lua' -type f 2>/dev/null")
-  if not pipe then return files end
-  for line in pipe:lines() do
-    if line ~= "" then files[#files + 1] = line end
-  end
-  pipe:close()
-  table.sort(files)
-  return files
+  return FsIo.luaFilesUnder(dir)
 end
 
 local function scan(dirs, patterns)