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/enter-plan-mode.ts

@@ -105,7 +105,7 @@ export class EnterPlanModeInvocation extends BaseToolInvocation<
         'This will restrict the agent to read-only tools to allow for safe planning.',
       onConfirm: async (outcome: ToolConfirmationOutcome) => {
         this.confirmationOutcome = outcome;
-        await this.publishPolicyUpdate(outcome);
+        // Policy updates are now handled centrally by the scheduler
       },
     };
   }