set up addressable geo tile streaming for quest

- add addressables settings/groups for tile prefabs with custom TileBuildPath/TileLoadPath profiles and link.xml preservation
- add editor tools for building tile addressables, configuring openxr quest loaders, removing missing scripts, and forcing android tool paths
- add runtime loader + manifest model to stream tile bundles from persistent data with radius-based load/unload
- add TestArea1 scene wired to GeoTileAddressablesLoader and update build settings to enable it
- update geo tile prefab importer output path to Assets/TilePrefabs
- update project/xr/android settings: min sdk 34, app id, openxr composition layers + quest devices, scripting define symbols, and renderer tweaks
- update packages (addressables 2.8, ar foundation 6.3.2, composition layers 2.3, collab proxy 2.11.2) and record scriptable build pipeline config
- remove temporary recovery scene files and add Notes plan/progress docs

AGENTS.md

@@ -26,3 +26,8 @@ Current history uses short, lowercase, sentence-style messages (e.g., `init`, `u
 
 ## Configuration & Generated Files
 Treat `Library/`, `Temp/`, and `Logs/` as generated output; avoid manual edits. When adding assets, keep `.meta` files in sync and prefer importing through the Unity Editor.
+
+## Notes Folder
+Use `Notes/` for planning and progress tracking:
+- `Notes/GEOTILELOADING_PLAN.md` holds the current plan and approach for tile loading.
+- `Notes/GEOTILELOADING_PROGRESS.md` captures current state, commands, and next steps.