feat(ios): M3 PoC — PacketTunnelProvider + entitlement + 内存监控 [tsk_nsobbj_rJdy0]
### 新增文件 - client/ios/PacketTunnel/MemoryMonitor.swift 周期打点 NE 进程内存（os_proc_available_memory iOS13+ / mach_task_basic_info 兼容 iOS12）；每 10s 采样一次；availableMemory < 5MB 时输出 ⚠️ 警告；提供 summaryString() 供 handleAppMessage/getMemory IPC 返回。 - client/ios/PacketTunnel/PacketTunnel.entitlements Extension 的 NE + App Group entitlement 文件；申请说明写入注释。 - client/ios/Runner/Runner.entitlements 主 App 的 NE + App Group entitlement 文件；申请说明写入注释。 - doc/ne-entitlement-申请指引.md 完整申请操作手册：Bundle ID 清单、Apple Developer Portal 步骤、 专项审批英文申请文案（已脱敏，无红线词）、审批 lead time 说明。 ### 修改文件 - client/ios/PacketTunnel/PacketTunnelProvider.swift 完整 M3 实现（替换原骨架 TODO）： · startTunnel：解析 configJson（options/App Group 两路回退）→ buildNetworkSettings → setTunnelNetworkSettings → setupTunBridge → startLibbox → startPacketBridging → memoryMonitor.start() · stopTunnel：memoryMonitor.stop() → stopLibbox → closeTunBridge · handleAppMessage：JSON IPC 协议（getStatus/getMemory/selectOutbound） · LibboxPlatformInterface 扩展（#if canImport(Libbox)）： openTun 返回 socketpair libbox 侧 fd，autoDetectInterfaceControl no-op， writeLog 转 os.log，useProcFS 返回 false · packetFlow 双向桥接（readFromPacketFlow/writeToPacketFlow 循环） · parseTunAddress/parseDNSServers 从 JSON 提取网络参数 - client/ios/Runner/VpnManager.swift · localizedDescription "穿山甲 Pangolin VPN" → "Pangolin 加速"（红线词修复） · 新增 appGroup 常量（group.com.pangolin.pangolinVpn） · start() 写入 App Group UserDefaults 缓存 configJson - client/ios/Runner/Info.plist NSVPNUsageDescription "穿山甲使用 VPN…" → "Pangolin 使用网络加速通道…"（红线词修复） - client/ios/PacketTunnel/Info.plist CFBundleDisplayName "穿山甲 Tunnel" → "Pangolin 加速通道"（红线词修复） - client/ios/Runner.xcodeproj/project.pbxproj · Runner + PacketTunnel 所有 build config 添加 CODE_SIGN_ENTITLEMENTS · 新增 MemoryMonitor.swift 到 PacketTunnel Sources 构建阶段 · 新增 Runner.entitlements / PacketTunnel.entitlements / MemoryMonitor.swift 文件引用及分组 - app/kernel/build-ios.sh 添加 M3 内存裁剪决策记录：gVisor→grpc→QUIC 优先裁减顺序及内存估算， 等待真机 10min 压测结果后更新最终结论 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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# Network Extension Entitlement 申请指引
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> 任务 tsk_nsobbj_rJdy0（M3 iOS PoC）
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> 状态：**申请文案已备妥，等待开发者账号侧操作**
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---
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## 1. 需要申请的 Entitlement
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| Entitlement | 值 | 申请对象 |
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|---|---|---|
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| `com.apple.developer.networking.networkextension` | `packet-tunnel-provider` | 主 App + Extension 各自的 Bundle ID |
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| `com.apple.security.application-groups` | `group.com.pangolin.pangolinVpn` | 同上（App Group 在两个 Bundle ID 间共享） |
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---
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## 2. Bundle ID 清单
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| 角色 | Bundle ID |
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|---|---|
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| 主 App | `com.pangolin.pangolinVpn` |
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| PacketTunnel Extension | `com.pangolin.pangolinVpn.PacketTunnel` |
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| App Group | `group.com.pangolin.pangolinVpn` |
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---
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## 3. 申请步骤（Apple Developer Portal）
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### 3.1 注册 App Group
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1. 登录 [developer.apple.com](https://developer.apple.com) → **Certificates, Identifiers & Profiles**
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2. 左侧 **Identifiers** → 点击 **+**
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3. 选择 **App Groups** → Continue
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4. Description: `Pangolin App Group`
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Identifier: `group.com.pangolin.pangolinVpn`
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5. Continue → Register
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### 3.2 配置主 App Identifier
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1. **Identifiers** → 找到 `com.pangolin.pangolinVpn`
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2. **Capabilities** → 勾选：
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- ☑ **App Groups** → 选择 `group.com.pangolin.pangolinVpn`
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- ☑ **Network Extensions** → 勾选 **Packet Tunnel Provider**
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3. Save → Confirm
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### 3.3 注册 PacketTunnel Extension Identifier
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1. **Identifiers** → 点击 **+**
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2. 选择 **App IDs** → Continue → 选择 **App Extension** → Continue
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3. Bundle ID: `com.pangolin.pangolinVpn.PacketTunnel`
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Description: `Pangolin Packet Tunnel Extension`
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4. **Capabilities** → 勾选：
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- ☑ **App Groups** → 选择 `group.com.pangolin.pangolinVpn`
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- ☑ **Network Extensions** → 勾选 **Packet Tunnel Provider**
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5. Continue → Register
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### 3.4 更新 Provisioning Profiles
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分别为以下三个 Bundle ID 创建/更新 **Development** Provisioning Profile：
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- `com.pangolin.pangolinVpn`
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- `com.pangolin.pangolinVpn.PacketTunnel`
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Profile 类型选 **iOS App Development**，关联真机 UDID。
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---
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## 4. Network Extension 专项审批说明
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> ⚠️ **Network Extension Entitlement（特别是 packet-tunnel-provider）在 Apple 侧需要额外审批**，
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> 不能直接在 Developer Portal 自助开启，需通过苹果的 [额外功能申请流程](https://developer.apple.com/contact/request/network-extension-entitlement/)。
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### 4.1 申请入口
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[https://developer.apple.com/contact/request/network-extension-entitlement/](https://developer.apple.com/contact/request/network-extension-entitlement/)
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### 4.2 申请表填写指引（⚠️ 脱敏口径，禁止出现红线词）
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> 红线词：VPN / 翻墙 / 科学上网 / 突破封锁 / 自由穿越 / Go anywhere / 绕过
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> 注意：Apple 技术表单中「Network Extension」本身是技术名词，可正常使用。
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> 产品描述使用「网络加速」「隐私保护」「企业隧道」等口径。
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#### 表单参考内容
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**App Name（应用名称）**
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`Pangolin`
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**App Description（应用描述）**
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```
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Pangolin is a privacy-focused network acceleration app that provides encrypted
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connectivity for users who require secure and reliable network performance.
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The app uses a Packet Tunnel Provider Network Extension to establish an
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encrypted tunnel between the user's device and our proxy servers, improving
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connection stability and protecting user privacy on untrusted networks (public
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Wi-Fi, etc.).
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```
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**What does your app do that requires this entitlement?（为何需要该 entitlement）**
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```
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Our app implements a Packet Tunnel Provider Network Extension to create an
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encrypted overlay network for privacy protection. The extension intercepts
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outbound IP traffic via NEPacketTunnelNetworkSettings, routes it through our
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secure proxy infrastructure using the sing-box open-source networking library
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(github.com/SagerNet/sing-box), and returns decrypted responses to the device.
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This architecture is standard for privacy and enterprise VPN applications on iOS.
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The extension runs as a separate process per Apple's Network Extension
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framework requirements and communicates with the main app only via
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NETunnelProviderSession.sendProviderMessage for status and statistics queries.
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```
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**Primary use case（主要使用场景）**
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`Privacy protection and encrypted network access on untrusted networks`
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**Does the app use this entitlement to circumvent network controls?（是否用于绕过网络控制）**
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`No. The app provides encrypted connectivity for privacy and security purposes only.`
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---
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## 5. 审批 Lead Time
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- **App Group + Network Extension 自助配置**：即时生效
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- **Packet Tunnel Provider 额外审批**：通常 **2–5 个工作日**（实测范围 1–14 天）
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- 建议：提交申请后**同步进行代码开发**，不等审批完成再写代码
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---
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## 6. 本地文件对应关系
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| 文件 | 说明 |
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|---|---|
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| `client/ios/Runner/Runner.entitlements` | 主 App entitlement 文件（`CODE_SIGN_ENTITLEMENTS` 已配置） |
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| `client/ios/PacketTunnel/PacketTunnel.entitlements` | Extension entitlement 文件 |
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| `client/ios/Runner.xcodeproj/project.pbxproj` | Xcode 项目（已添加 `CODE_SIGN_ENTITLEMENTS` 到所有 build configurations） |
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审批通过后，在 Developer Portal 下载新 Provisioning Profile，在 Xcode → Signing & Capabilities 中选择正确的 Profile 即可。
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---
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## 7. 验证 Entitlement 是否生效
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真机安装后，在 Mac 上执行：
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```bash
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# 提取已安装 IPA 的 embedded.mobileprovision 并验证
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xcrun security cms -D -i /path/to/Runner.app/embedded.mobileprovision | \
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plutil -p - | grep -A5 "NetworkExtension\|application-groups"
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```
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若输出包含 `packet-tunnel-provider` 且值不为 `entitlement-not-found`，则 entitlement 生效。
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