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.ts

@@ -13,7 +13,7 @@ import {
   BaseDeclarativeTool,
   BaseToolInvocation,
   Kind,
-  ToolConfirmationOutcome,
+  type ToolConfirmationOutcome,
 } from './tools.js';
 import type { MessageBus } from '../confirmation-bus/message-bus.js';
 import { ToolErrorType } from './tool-error.js';
@@ -246,14 +246,9 @@ ${textContent}
       title: `Confirm Web Fetch`,
       prompt: this.params.prompt,
       urls,
-      onConfirm: async (outcome: ToolConfirmationOutcome) => {
-        if (outcome === ToolConfirmationOutcome.ProceedAlways) {
-          // No need to publish a policy update as the default policy for
-          // AUTO_EDIT already reflects always approving web-fetch.
-          this.config.setApprovalMode(ApprovalMode.AUTO_EDIT);
-        } else {
-          await this.publishPolicyUpdate(outcome);
-        }
+      onConfirm: async (_outcome: ToolConfirmationOutcome) => {
+        // Mode transitions (e.g. AUTO_EDIT) and policy updates are now
+        // handled centrally by the scheduler.
       },
     };
     return confirmationDetails;