fix(tui): reset agent-backed minimal sessions

src/frontends/tui/minimal.test.ts

@@ -377,6 +377,34 @@ describe('MinimalTui backend command', () => {
     }
   });
 
+  it('uses agent.reset for /reset when an agent is configured', async () => {
+    const mockSession = {
+      id: 'test',
+      getHistory: () => [],
+      addMessage: vi.fn(),
+      clear: vi.fn(),
+      replaceHistory: vi.fn(),
+    };
+    const mockAgent = {
+      reset: vi.fn(),
+      setModelTier: vi.fn(),
+      getModelTier: vi.fn(() => 'default'),
+      process: vi.fn(),
+    };
+
+    const tui = new MinimalTui({
+      session: asSession(mockSession),
+      modelClient: asModelClient({}),
+      systemPrompt: 'test',
+      agent: asAgent(mockAgent),
+    });
+
+    await minimalTuiPrivates(tui).handleCommand({ type: 'reset' });
+
+    expect(mockAgent.reset).toHaveBeenCalledOnce();
+    expect(mockSession.clear).not.toHaveBeenCalled();
+  });
+
   it('prints tools output when /tools is invoked', async () => {
     const mockSession = {
       id: 'test',