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/utils/preview_selection.py

@@ -15,7 +15,7 @@ def _extract_nsfw_level(entry: Mapping[str, object]) -> int:
 
     value = entry.get("nsfwLevel", 0)
     try:
-        return int(value)  # type: ignore[return-value]
+        return int(value)  # pyright: ignore[reportArgumentType, reportReturnType]
     except (TypeError, ValueError):
         return 0