fix: stabilize CI tests - routes and bedrock config

- Add /v1/vector_store/list route for OpenAI API compatibility (fixes test_routes_on_litellm_proxy)
- Fix Bedrock Converse API model format (bedrock_converse/ → bedrock/converse/)
- Fix Nova Premier inference profile prefix (amazon. → us.amazon.)
- Add STABILIZATION_TODO.md to .gitignore

Tested locally - all affected tests now pass

Co-authored-by: Cursor <cursoragent@cursor.com>

.gitignore

@@ -95,6 +95,7 @@ update_model_cost_map.py
 tests/test_litellm/proxy/_experimental/mcp_server/test_mcp_server_manager.py
 scripts/test_vertex_ai_search.py
 LAZY_LOADING_IMPROVEMENTS.md
+STABILIZATION_TODO.md
 **/test-results
 **/playwright-report
 **/*.storageState.json

litellm/proxy/vector_store_endpoints/management_endpoints.py

@@ -486,6 +486,12 @@ async def new_vector_store(
     dependencies=[Depends(user_api_key_auth)],
     response_model=LiteLLM_ManagedVectorStoreListResponse,
 )
+@router.get(
+    "/v1/vector_store/list",
+    tags=["vector store management"],
+    dependencies=[Depends(user_api_key_auth)],
+    response_model=LiteLLM_ManagedVectorStoreListResponse,
+)
 async def list_vector_stores(
     user_api_key_dict: UserAPIKeyAuth = Depends(user_api_key_auth),
     page: int = 1,