[Feature]: 添加麦克风权限

### 问题或场景 / Problem

Glint.app 的 Info.plist 缺少 NSMicrophoneUsageDescription，且为 adhoc 签名——按 macOS TCC 规则，此类 app 请求麦克风会被静默拒绝、不弹框。

### 建议方案 / Proposed solution

Info.plist 添加 NSMicrophoneUsageDescription = "A program running within Glint would like to use your microphone."

### 试过的替代方案 / Alternatives considered

_No response_

### 相关区域 / Area

终端窗格 / Terminal panes

### 补充说明 / Additional context

无