fix(core): reset pendingFeedbackMessage in ConversationHistory.reset() (#2055)

The reset() method was not clearing pendingFeedbackMessage, causing
stale "The previous action has been executed" context to leak into
the first planning turn of subsequent MCP tool calls. This made the
planning model incorrectly conclude the task was already completed
without performing any action.

Author: quanru

packages/core/src/ai-model/conversation-history.ts

@@ -42,6 +42,7 @@ export class ConversationHistory {
     this.memories.length = 0;
     this.subGoals.length = 0;
     this.historicalLogs.length = 0;
+    this.pendingFeedbackMessage = '';
   }
 
   /**

packages/core/tests/unit-test/conversation-history.test.ts

@@ -54,6 +54,8 @@ describe('ConversationHistory', () => {
     history.appendHistoricalLog('Step 1');
     history.appendHistoricalLog('Step 2');
 
+    history.pendingFeedbackMessage = 'Current time: 2026-03-02T16:04:00';
+
     history.reset();
 
     expect(history.length).toBe(0);
@@ -62,6 +64,7 @@ describe('ConversationHistory', () => {
     expect(history.memoriesToText()).toBe('');
     expect(history.subGoalsToText()).toBe('');
     expect(history.historicalLogsToText()).toBe('');
+    expect(history.pendingFeedbackMessage).toBe('');
   });
 
   it('clears pending feedback message only when set', () => {