feat(shell): enable PTY by default and various enhancements

### Shell & Interactive Terminal Improvements
- PTY shell is now enabled by default instead of disabled
- Improved shell output rendering, process termination, and added fallback warning
- Background commands now properly capture subprocess PIDs on non-Windows

### Coding Plan Improvements
- Simplified auth message, added /model tip, improved system info display
- Reordered model list to prioritize glm-5, kimi-k2.5, MiniMax-M2.5
- Model selection is now preserved when updating if the model still exists

### Other Changes
- Added shared symlink utility; debug logs now have latest alias
- Unknown settings warnings go to debug log instead of user-facing warnings
- Fixed subagent confirmation state detection
- Removed debug UI from AgentCreationWizard

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

packages/cli/src/ui/hooks/useGeminiStream.ts

@@ -59,6 +59,7 @@ import {
   type TrackedToolCall,
   type TrackedCompletedToolCall,
   type TrackedCancelledToolCall,
+  type TrackedExecutingToolCall,
   type TrackedWaitingToolCall,
 } from './useReactToolScheduler.js';
 import { promises as fs } from 'node:fs';
@@ -358,6 +359,23 @@ export const useGeminiStream = (
     if (toolCalls.some((tc) => tc.status === 'awaiting_approval')) {
       return StreamingState.WaitingForConfirmation;
     }
+    // Check if any executing subagent task has a pending confirmation
+    if (
+      toolCalls.some((tc) => {
+        if (tc.status !== 'executing') return false;
+        const liveOutput = (tc as TrackedExecutingToolCall).liveOutput;
+        return (
+          typeof liveOutput === 'object' &&
+          liveOutput !== null &&
+          'type' in liveOutput &&
+          liveOutput.type === 'task_execution' &&
+          'pendingConfirmation' in liveOutput &&
+          liveOutput.pendingConfirmation != null
+        );
+      })
+    ) {
+      return StreamingState.WaitingForConfirmation;
+    }
     if (
       isResponding ||
       toolCalls.some(