baseline: working salvaged prototype on Godot 4.7.1 (pre-F1)

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

.gitignore

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+# ---------------------------------------------------------------------------
+# IslaApocalypse — Godot 4 / C# .gitignore
+#
+# Rule of thumb: commit SOURCE (what you wrote), ignore GENERATED (what a tool
+# can rebuild). Everything below is rebuilt automatically by Godot or the C#
+# compiler, so keeping it out of git keeps the repo small and avoids conflicts.
+# ---------------------------------------------------------------------------
+
+# Godot's editor cache: imported textures, shader cache, the generated C# glue.
+# Regenerated on first open. This is the big one (~9 MB here, and it grows).
+.godot/
+.import/
+
+# C# / .NET build output. Rebuilt by any build.
+bin/
+obj/
+*.dll
+*.pdb
+*.exe
+*.so
+*.dylib
+*.nupkg
+
+# Old Mono-era folder, kept out in case an older tool recreates it.
+.mono/
+
+# Per-developer IDE/editor settings — not project settings, so not shared.
+*.user
+*.userprefs
+.vs/
+.vscode/
+.idea/
+
+# Exported game builds — artifacts of a release, not source.
+/build/
+/builds/
+/export/
+/exports/
+*.pck
+*.zip
+
+# Crash dumps.
+mono_crash.*.json
+logs/
+
+# OS clutter.
+.DS_Store
+Thumbs.db
+
+# ---------------------------------------------------------------------------
+# Deliberately NOT ignored (these are source and MUST be committed):
+#   *.cs  *.tscn  project.godot  *.csproj  *.sln  ServerConfig.json
+#   icon.svg + icon.svg.import   READMEs   Data/ and Resources/ contents
+#
+# Note on generated world data: the map blueprint (MapData_Seed_*.dat, ~512 MB)
+# and its PNG are written to Godot's `user://` folder, which lives OUTSIDE this
+# project directory — so they can never be committed by accident. Nothing to do.
+# ---------------------------------------------------------------------------