refactor: MCP層をmcpc APIベースに刷新

- 独自JSON-RPC処理をmcpcへ置き換え
- 各MCPツールを個別ソースへ分離
- 共通コンテキストと登録処理を整理
- mcpc互換修正と統合テストを更新

1 files changed, 1 insertions, 2 deletions

diff --git a/src/storage/store.h b/src/storage/store.h
index cc14a80..619f86f 100644
--- a/src/storage/store.h
+++ b/src/storage/store.h
@@ -4,7 +4,6 @@
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
-#include <wchar.h>
 
 #include "domain/message.h"
 
@@ -47,7 +46,7 @@ typedef struct tiny_store_health
   char last_error[160];
 } tiny_store_health_t;
 
-tiny_store_status_t tiny_store_open(tiny_store_t **store, const wchar_t *directory);
+tiny_store_status_t tiny_store_open(tiny_store_t **store, const char *directory);
 void tiny_store_close(tiny_store_t *store);
 const char *tiny_store_status_name(tiny_store_status_t status);