fix: MCPCをvendored fork化しMCP準拠と接続安定性を改善

- Git submoduleを廃止してMCPCを直接管理
- Windowsで254リクエスト付近に発生する切断を修正
- JSON-RPC 2.0エラー応答を標準化
- tool schemaとruntimeの必須・任意引数を一致
- 1000回連続呼び出しの回帰テストを追加

1 files changed, 31 insertions, 0 deletions

diff --git a/third_party/mcpc/mk/step0.mk b/third_party/mcpc/mk/step0.mk
new file mode 100644
index 0000000..8ec5d72
--- /dev/null
+++ b/third_party/mcpc/mk/step0.mk
@@ -0,0 +1,31 @@
+ifeq ($(SHELL),/bin/sh)
+  is_sh = xxx
+  is_dirsh = xxx
+  unameall = $(shell uname -a)
+  is_linux = $(findstring Linux,$(unameall))
+  is_cygwin = $(findstring Cygwin,$(unameall))
+  is_mingw = $(findstring MINGW64_NT,$(unameall))
+  is_macos = $(findstring Darwin,$(unameall))
+else ifneq (,$(findstring /sh.exe,$(SHELL)))
+  # indirectly enter bash (but the only way we enter GH win)
+  is_sh = xxx
+  is_indirsh = xxx
+  is_win = xxx
+  unameall = $(shell uname -a)
+  is_msys = $(findstring MSYS_NT,$(unameall))
+  is_mingw = $(findstring MINGW64_NT,$(unameall))
+  sysinfo = $(shell systeminfo)
+  ifneq (,$(findstring Windows Server 2019,$(sysinfo)))
+    is_win2019 = xxx
+  endif
+  ifneq (,$(findstring Windows Server 2022,$(sysinfo)))
+    is_win2022 = xxx
+  endif
+  ifneq (,$(findstring Windows Server 2025,$(sysinfo)))
+    is_win2025 = xxx
+  endif
+else ifneq (,$(findstring sh.exe,$(SHELL)))
+  is_win = xxx
+  is_cmd = xxx
+endif
+isnot_done_ccdefs = xxx