cleanup: Remove legacy response_format field.

sdk-samples/interactions_structured_output_json.ts

@@ -15,8 +15,11 @@ async function createInteractionsFromMLDev() {
   const response = await ai.interactions.create({
     model: 'gemini-2.5-flash',
     input: 'Which are the colors of a rainbow',
-    response_mime_type: 'application/json',
-    response_format: {type: 'array', description: 'A list of colors'},
+    response_format: {
+      type: 'text',
+      mime_type: 'application/json',
+      schema: {type: 'array', description: 'A list of colors'},
+    },
   });
 
   console.debug(response);

sdk-samples/interactions_tool_call_with_mime_type.ts

@@ -34,16 +34,19 @@ async function createInteractionsFromMLDev() {
       },
     ],
     response_format: {
-      type: 'object',
-      properties: {
-        location: {type: 'string'},
-        temperature: {type: 'number'},
-        condition: {type: 'string'},
-        recommendation: {type: 'string'},
+      type: 'text',
+      mime_type: 'application/json',
+      schema: {
+        type: 'object',
+        properties: {
+          location: {type: 'string'},
+          temperature: {type: 'number'},
+          condition: {type: 'string'},
+          recommendation: {type: 'string'},
+        },
+        required: ['location', 'temperature', 'condition', 'recommendation'],
       },
-      required: ['location', 'temperature', 'condition', 'recommendation'],
     },
-    response_mime_type: 'application/json',
   });
 
   console.debug(response);

src/gaos/models/interactions/response-format.ts

@@ -19,5 +19,4 @@ export type ResponseFormat =
   | AudioResponseFormat
   | ImageResponseFormat
   | TextResponseFormat
-  | VideoResponseFormat
-  | { [k: string]: any };
+  | VideoResponseFormat;