Expand material support and checkpoint the completed building toolkit

Expose the runtime block/item registry through compact material search and
single-material descriptions. Preserve private block-entity data through
checked edits and durable undo without sending payloads to model context.

Include the completed terrain tools, isolated world/map plugin, station lift,
ACP streaming and guidance fixes, local camera auto-connect, construction
scripts, and their public documentation, references and verification records.
Active station decoration and private runtime data remain outside this commit.

Validation: 145 Maven tests, 47 Bridge tests, successful camera Gradle build,
and isolated Paper verification of all 1,196 block defaults plus 5,392
independent property cases for placement, same-material edits and restoration.

scripts/camera-wrapper.py

@@ -22,6 +22,9 @@ def main():
     except (OSError, ValueError):
         raise SystemExit('Cannot read a valid camera token/port from the private Paper config.')
     environment = dict(os.environ, MCB_CAMERA_TOKEN=token, MCB_CAMERA_PORT=str(port))
+    auto = re.search(r'^camera-auto-connect:[ \t]*[\'\"]?(127\.0\.0\.1:[0-9]{1,5})[\'\"]?[ \t]*$', data, re.M)
+    if auto:
+        environment['MCB_CAMERA_AUTO_CONNECT'] = auto.group(1)
     os.execvpe(sys.argv[1], sys.argv[1:], environment)
 
 if __name__ == '__main__':