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/example_images_processor.py

@@ -4,6 +4,7 @@ import os
 import re
 import random
 import string
+from typing import Any
 from aiohttp import web
 from ..utils.constants import SUPPORTED_MEDIA_EXTENSIONS
 from ..services.service_registry import ServiceRegistry
@@ -259,7 +260,7 @@ class ExampleImagesProcessor:
                 logger.debug("File already exists, skipping download for %s", image_url)
                 continue
 
-            async def _attempt_download() -> tuple:
+            async def _attempt_download() -> tuple[bool, Any, Any]:
                 logger.debug("Downloading media file %s for %s", i, model_name)
                 return await downloader.download_to_memory(
                     image_url,