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>

vendor/protobuf/examples/Makefile

@@ -0,0 +1,91 @@
+# See README.txt.
+
+.PHONY: all cpp java python clean
+
+all: cpp java python
+
+cpp:    add_person_cpp    list_people_cpp
+dart:   add_person_dart   list_people_dart
+go:     add_person_go     list_people_go
+gotest: add_person_gotest list_people_gotest
+java:   add_person_java   list_people_java
+python: add_person_python list_people_python
+
+clean:
+	rm -f add_person_cpp list_people_cpp add_person_java list_people_java add_person_python list_people_python
+	rm -f javac_middleman AddPerson*.class ListPeople*.class com/example/tutorial/*.class
+	rm -f protoc_middleman addressbook.pb.cc addressbook.pb.h addressbook_pb2.py com/example/tutorial/AddressBookProtos.java
+	rm -f *.pyc
+	rm -f go/tutorialpb/*.pb.go add_person_go list_people_go
+	rm -f protoc_middleman_dart dart_tutorial/*.pb*.dart
+	rmdir dart_tutorial 2>/dev/null || true
+	rmdir tutorial 2>/dev/null || true
+	rmdir com/example/tutorial 2>/dev/null || true
+	rmdir com/example 2>/dev/null || true
+	rmdir com 2>/dev/null || true
+
+protoc_middleman: addressbook.proto
+	protoc $$PROTO_PATH --cpp_out=. --java_out=. --python_out=. addressbook.proto
+	@touch protoc_middleman
+
+go/tutorialpb/addressbook.pb.go: addressbook.proto
+	mkdir -p go/tutorialpb # make directory for go package
+	protoc $$PROTO_PATH --go_opt=paths=source_relative --go_out=go/tutorialpb addressbook.proto
+
+protoc_middleman_dart: addressbook.proto
+	mkdir -p dart_tutorial # make directory for the dart package
+	protoc -I ../src/:. --dart_out=dart_tutorial addressbook.proto ../src/google/protobuf/timestamp.proto
+	pub get
+	@touch protoc_middleman_dart
+
+add_person_cpp: add_person.cc protoc_middleman
+	pkg-config --cflags protobuf  # fails if protobuf is not installed
+	c++ -std=c++11 add_person.cc addressbook.pb.cc -o add_person_cpp `pkg-config --cflags --libs protobuf`
+
+list_people_cpp: list_people.cc protoc_middleman
+	pkg-config --cflags protobuf  # fails if protobuf is not installed
+	c++ -std=c++11 list_people.cc addressbook.pb.cc -o list_people_cpp `pkg-config --cflags --libs protobuf`
+
+add_person_dart: add_person.dart protoc_middleman_dart
+
+list_people_dart: list_people.dart protoc_middleman_dart
+
+add_person_go: go/cmd/add_person/add_person.go go/tutorialpb/addressbook.pb.go
+	cd go && go build -o ../add_person_go ./cmd/add_person
+
+add_person_gotest: go/tutorialpb/addressbook.pb.go
+	cd go && go test ./cmd/add_person
+
+list_people_go: go/cmd/list_people/list_people.go go/tutorialpb/addressbook.pb.go
+	cd go && go build -o ../list_people_go ./cmd/list_people
+
+list_people_gotest: go/tutorialpb/addressbook.pb.go
+	cd go && go test ./cmd/list_people
+
+javac_middleman: AddPerson.java ListPeople.java protoc_middleman
+	javac -cp $$CLASSPATH AddPerson.java ListPeople.java com/example/tutorial/AddressBookProtos.java
+	@touch javac_middleman
+
+add_person_java: javac_middleman
+	@echo "Writing shortcut script add_person_java..."
+	@echo '#! /bin/sh' > add_person_java
+	@echo 'java -classpath .:$$CLASSPATH AddPerson "$$@"' >> add_person_java
+	@chmod +x add_person_java
+
+list_people_java: javac_middleman
+	@echo "Writing shortcut script list_people_java..."
+	@echo '#! /bin/sh' > list_people_java
+	@echo 'java -classpath .:$$CLASSPATH ListPeople "$$@"' >> list_people_java
+	@chmod +x list_people_java
+
+add_person_python: add_person.py protoc_middleman
+	@echo "Writing shortcut script add_person_python..."
+	@echo '#! /bin/sh' > add_person_python
+	@echo './add_person.py "$$@"' >> add_person_python
+	@chmod +x add_person_python
+
+list_people_python: list_people.py protoc_middleman
+	@echo "Writing shortcut script list_people_python..."
+	@echo '#! /bin/sh' > list_people_python
+	@echo './list_people.py "$$@"' >> list_people_python
+	@chmod +x list_people_python