Remaster 23 classic terrain and structure pictures

Add reviewed native terrain artwork, preserve original detail where required, and validate versioned carried Terrain identities. Bundle the 5407-frame pack for Linux and Windows and record current validation results.

runtime-windows-manifest.json

@@ -3,7 +3,7 @@
   "platform": "Windows x86_64",
   "target": "x86_64-pc-windows-gnu",
   "catalog_entries": 6449,
-  "approved_hd_frames": 5384,
+  "approved_hd_frames": 5407,
   "shared_data_manifest": "runtime-manifest.json",
   "dependencies": {
     "raptor-rust.exe": [