fix(mypy): sync route_type Literals, fix BFL params and signatures

Task 1: Sync route_type Literal definitions in common_request_processing.py
- Make base_process_llm_request and common_processing_pre_call_logic Literals identical
- Add missing vector store CRUD route types to base_process_llm_request
- Fix data dict type annotation in vector_store_endpoints/endpoints.py

Task 2: Add BFL provider-specific params to OpenAIImageGenerationOptionalParams
- Add seed, safety_tolerance, prompt_upsampling, raw, num_images, image_url,
  image_prompt_strength, aspect_ratio

Task 3: Fix BFL override signatures to match base class
- image_generation: Replace **kwargs with explicit params
- image_edit: Make prompt and image Optional to match superclass

Co-authored-by: yuneng-jiang <yuneng-jiang@users.noreply.github.com>

litellm/llms/black_forest_labs/image_edit/transformation.py

@@ -230,8 +230,8 @@ class BlackForestLabsImageEditConfig(BaseImageEditConfig):
     def transform_image_edit_request(
         self,
         model: str,
-        prompt: str,
-        image: FileTypes,
+        prompt: Optional[str],
+        image: Optional[FileTypes],
         image_edit_optional_request_params: Dict,
         litellm_params: GenericLiteLLMParams,
         headers: dict,

litellm/llms/black_forest_labs/image_generation/transformation.py

@@ -259,7 +259,12 @@ class BlackForestLabsImageGenerationConfig(BaseImageGenerationConfig):
         raw_response: httpx.Response,
         model_response: ImageResponse,
         logging_obj: LiteLLMLoggingObj,
-        **kwargs,
+        request_data: dict,
+        optional_params: dict,
+        litellm_params: dict,
+        encoding: Any,
+        api_key: Optional[str] = None,
+        json_mode: Optional[bool] = None,
     ) -> ImageResponse:
         """
         Transform Black Forest Labs response to OpenAI-compatible ImageResponse.

litellm/proxy/common_request_processing.py

@@ -530,6 +530,8 @@ class ProxyBaseLLMRequestProcessing:
             "aresponses",
             "_arealtime",
             "_aresponses_websocket",
+            "acreate_realtime_client_secret",
+            "arealtime_calls",
             "aget_responses",
             "adelete_responses",
             "acancel_responses",
@@ -553,6 +555,10 @@ class ProxyBaseLLMRequestProcessing:
             "allm_passthrough_route",
             "avector_store_search",
             "avector_store_create",
+            "avector_store_retrieve",
+            "avector_store_list",
+            "avector_store_update",
+            "avector_store_delete",
             "avector_store_file_create",
             "avector_store_file_list",
             "avector_store_file_retrieve",
@@ -774,20 +780,36 @@ class ProxyBaseLLMRequestProcessing:
             "aembedding",
             "aresponses",
             "_arealtime",
+            "_aresponses_websocket",
             "acreate_realtime_client_secret",
             "arealtime_calls",
             "aget_responses",
             "adelete_responses",
             "acancel_responses",
             "acompact_responses",
+            "acreate_batch",
+            "aretrieve_batch",
+            "alist_batches",
+            "acancel_batch",
+            "afile_content",
+            "afile_retrieve",
+            "afile_delete",
             "atext_completion",
-            "aimage_edit",
+            "acreate_fine_tuning_job",
+            "acancel_fine_tuning_job",
+            "alist_fine_tuning_jobs",
+            "aretrieve_fine_tuning_job",
             "alist_input_items",
+            "aimage_edit",
             "agenerate_content",
             "agenerate_content_stream",
             "allm_passthrough_route",
             "avector_store_search",
             "avector_store_create",
+            "avector_store_retrieve",
+            "avector_store_list",
+            "avector_store_update",
+            "avector_store_delete",
             "avector_store_file_create",
             "avector_store_file_list",
             "avector_store_file_retrieve",
@@ -815,8 +837,8 @@ class ProxyBaseLLMRequestProcessing:
             "aget_interaction",
             "adelete_interaction",
             "acancel_interaction",
-            "acancel_batch",
-            "afile_delete",
+            "asend_message",
+            "call_mcp_tool",
             "acreate_eval",
             "alist_evals",
             "aget_eval",

litellm/proxy/vector_store_endpoints/endpoints.py

@@ -386,7 +386,7 @@ async def vector_store_list(
         version,
     )
 
-    data = {}
+    data: dict = {}
     if after is not None:
         data["after"] = after
     if before is not None:

litellm/types/llms/openai.py

@@ -1052,6 +1052,14 @@ OpenAIImageGenerationOptionalParams = Literal[
     "size",
     "style",
     "user",
+    "seed",
+    "safety_tolerance",
+    "prompt_upsampling",
+    "raw",
+    "num_images",
+    "image_url",
+    "image_prompt_strength",
+    "aspect_ratio",
 ]
 
 OpenAIImageEditOptionalParams = Literal[