fix(core): prevent duplicate tool approval entries in auto-saved.toml (#19487)

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

packages/core/src/tools/web-fetch.test.ts

@@ -390,7 +390,7 @@ describe('WebFetchTool', () => {
       expect(confirmationDetails).toBe(false);
     });
 
-    it('should call setApprovalMode when onConfirm is called with ProceedAlways', async () => {
+    it('should NOT call setApprovalMode when onConfirm is called with ProceedAlways (now handled by scheduler)', async () => {
       const tool = new WebFetchTool(mockConfig, bus);
       const params = { prompt: 'fetch https://example.com' };
       const invocation = tool.build(params);
@@ -408,9 +408,8 @@ describe('WebFetchTool', () => {
         );
       }
 
-      expect(mockConfig.setApprovalMode).toHaveBeenCalledWith(
-        ApprovalMode.AUTO_EDIT,
-      );
+      // Schedulers are now responsible for mode transitions via updatePolicy
+      expect(mockConfig.setApprovalMode).not.toHaveBeenCalled();
     });
   });