feat: 完成 M2 mosh（LAN + tsnet 端到端验证）

- mosh(blinksh/ios C++)+protobuf-lite 交叉编译为 MoshCore.xcframework
  （CommonCrypto 后端、含 arm64 模拟器 slice；绕 autotools 用 CMake 直编 + 手写 config.h）
- tsnet 桥新增 UDP relay（StartMoshRelay：loopback↔tsnet.Dial 逐包搬运）
- MoshSession（pipe↔FILE*/pthread/SIGWINCH）+ MoshConnectScanner（TXCore，+4 单测=39）
- SSHTerminalModel 编排：SSH 引导 mosh-server→解析 MOSH CONNECT→relay→mosh 接管
- LAN 直连 + mosh-over-tsnet 均端到端验证通过，R1(tsnet UDP 数据报语义) 证伪

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

artifacts/TsnetBridge.xcframework/Info.plist

@@ -4,20 +4,6 @@
 <dict>
 	<key>AvailableLibraries</key>
 	<array>
-		<dict>
-			<key>BinaryPath</key>
-			<string>TsnetBridge.framework/TsnetBridge</string>
-			<key>LibraryIdentifier</key>
-			<string>ios-arm64</string>
-			<key>LibraryPath</key>
-			<string>TsnetBridge.framework</string>
-			<key>SupportedArchitectures</key>
-			<array>
-				<string>arm64</string>
-			</array>
-			<key>SupportedPlatform</key>
-			<string>ios</string>
-		</dict>
 		<dict>
 			<key>BinaryPath</key>
 			<string>TsnetBridge.framework/TsnetBridge</string>
@@ -35,6 +21,20 @@
 			<key>SupportedPlatformVariant</key>
 			<string>simulator</string>
 		</dict>
+		<dict>
+			<key>BinaryPath</key>
+			<string>TsnetBridge.framework/TsnetBridge</string>
+			<key>LibraryIdentifier</key>
+			<string>ios-arm64</string>
+			<key>LibraryPath</key>
+			<string>TsnetBridge.framework</string>
+			<key>SupportedArchitectures</key>
+			<array>
+				<string>arm64</string>
+			</array>
+			<key>SupportedPlatform</key>
+			<string>ios</string>
+		</dict>
 	</array>
 	<key>CFBundlePackageType</key>
 	<string>XFWK</string>