fix(types): resolve pre-existing basedpyright errors in py/ and standalone.py

Fix ~950 basedpyright errors across the backend:
- Convert ineffective # type: ignore comments to # pyright: ignore[rule]
- Add missing generic type arguments (Dict[str, Any], list[Any], ...)
- Annotate dynamic dict literals and runtime-initialized attributes
- Widen CivitAI provider tuple signatures in recipe parsers
- Remove dead LoraRoutes handlers calling nonexistent LoraService methods
- Suppress unavoidable ServiceRegistry import cycles (basedpyright counts
  function-local imports as cycle edges)

py/metadata_collector/metadata_hook.py

@@ -16,7 +16,7 @@ class MetadataHook:
             execution = None
             try:
                 # Try direct import first
-                import execution # type: ignore
+                import execution # pyright: ignore[reportMissingImports]
             except ImportError:
                 # Try to locate from system modules
                 for module_name in sys.modules: