docs(api): sync GET /settings response schema with new embedding fields

api/openapi.json

@@ -821,7 +821,14 @@
                     "cors_origins": { "type": "array", "items": { "type": "string" } },
                     "session_ttl_minutes": { "type": "integer" },
                     "webui_enabled": { "type": "boolean" },
-                    "default_project": { "type": "string" }
+                    "default_project": { "type": "string" },
+                    "embedding_connect_timeout_sec": { "type": "integer" },
+                    "embedding_read_timeout_sec": { "type": "integer" },
+                    "embedding_cache_size": { "type": "integer" },
+                    "embedding_cache_ttl_sec": { "type": "integer" },
+                    "embedding_cache_max_bytes": { "type": "integer" },
+                    "embedding_cache_normalize": { "type": "boolean" },
+                    "embedding_client_pool_size": { "type": "integer" }
                   }
                 }
               }