Make work with astra

Recovery/README.md

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+# Source recovery
+
+The checkout contained asset contents replaced by `.meta` data, metadata
+replaced by models/images/source code, duplicated GUIDs, and directories named
+like missing files. The old Library cache was also damaged. Recoveries preserve
+existing asset references wherever the original GUID could be recovered.
+
+## Provenance
+
+- `UnityProject/Assets/junctionAssets.zip`: restored the corrupted buildings and
+  fence models, seven materials, four prefabs, and several metadata files from
+  the bundled `junctionAssets - Copy` archive. Intact source files were retained.
+- `UnityProject/Scripts/other.zip`: restored metadata for `canvasChooser`,
+  `serverRunningMenu`, and `destroyCar`.
+- The bundled Windows server's `Simulation_Data/Managed/Assembly-CSharp.dll`:
+  decompiled `CarLL` and `trafficLightColor` with ILSpy 9.1.0.7988. Removed
+  generated UNet weaving methods and changed the woven `CallRpcDecodeBits` call
+  back to the source `RpcDecodeBits`, so Unity can weave the assembly again.
+  The assembly SHA-256 was
+  `9b23bd2b83c61ce07b579da9b594ddd535ed543435545b355f2c94d09d53a6e4`.
+- [Unity PostProcessing v1](https://github.com/Unity-Technologies/PostProcessing/tree/933df236f509ed64ae5763ed57af33f2342cd1c2),
+  commit `933df236f509ed64ae5763ed57af33f2342cd1c2`: restored damaged editor
+  scripts, missing model editors, shaders, blue-noise textures, and metadata.
+- Unity's original 2018.1.6 Standard Assets distribution, downloaded from the
+  [official release installer](https://download.unity3d.com/download_unity/a68afd074ea7/MacStandardAssetsInstaller/StandardAssets.pkg)
+  (MD5 `b891fafc108fec1232c5b1409c79bb9c`): restored `VirtualInput.cs`, the
+  damaged mobile control prefab/sprite, and associated metadata from the
+  CrossPlatformInput package.
+- Original cached Unity import records: recovered lost GUIDs, model sub-asset
+  IDs/material mappings, and native asset metadata. Texture metadata uses the
+  corresponding intact neighboring import settings and the recovered GUID.
+- Original cached textures: recovered `Lightmap-0_comp_dir.png` including its
+  directionality alpha channel, and `Lightmap-1_comp_light.exr` with HDR values.
+  UnityPy decoded the directional BC7 texture; [bcdec](https://github.com/iOrange/bcdec)
+  decoded BC6H into floating point for OpenEXR output. These are recoveries from
+  the imported, compressed cache, not byte-identical original source images.
+  The HDR decoding/orientation was checked against an intact source lightmap.
+
+The old `UnityProject/Library` is preserved locally at
+`Builds/recovery/Library-original`. Recovery intermediates and audit files are
+under `Builds/recovery/`. Neither directory is required by the restored build.
+
+## Small compatibility and startup changes
+
+- Renamed `Assets/!ext` to `Assets/ThirdParty`, keeping its GUIDs. In the original
+  folder, the legacy Linux player build omitted the vendor C# classes although
+  editor compilation succeeded. The renamed folder produces the post-processing
+  and particle-effect classes in the player, eliminating missing-script warnings.
+- Initialized traffic control and notification spawning in `OnStartServer`, so
+  starting networking after the scene loads works correctly.
+- Initialized RPC receiver state before the first update can arrive and corrected
+  the client disconnect callback's base method.
+- Added `--server`, `--connect`, `--traffic-url`, and `--event-url` startup options,
+  disabled the old resolution popup, and removed repetitive server log output.
+- Added a launcher for the original Python backends plus separate UNet server
+  and client processes. The launcher binds the HTTP services to localhost; their
+  standalone default remains unchanged.
+- Unity regenerated damaged PresetManager and UnityConnectSettings files, which
+  had contained unrelated PlayerSettings and TimeManager data respectively.
+
+## Unrestored optional files
+
+`unrestored/` preserves corrupt files outside Unity's import tree, under their
+original paths. They are not required by Main:
+
+- One unused motion-capture FBX animation.
+- An unused `tweet.prefab`; the working scene uses `clientGame.prefab` instead.
+- A reference photograph and three FBX exporter documentation/archive files.
+- `FbxExportSettings.asset`, which incorrectly contained EditorSettings YAML
+  rather than the exporter's JSON settings and caused an import exception.
+
+These files still need an intact source if their optional functionality is
+wanted. The Windows-only FBX exporter tools were not ported. Existing backup
+`.blend1` files are retained and ignored by Git.