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, 57 insertions, 0 deletions

diff --git a/src/mcp/tools/rebuild_index.c b/src/mcp/tools/rebuild_index.c
new file mode 100644
index 0000000..69f8341
--- /dev/null
+++ b/src/mcp/tools/rebuild_index.c
@@ -0,0 +1,57 @@
+#include "mcp/tools/common/registry.h"
+
+#include "mcp/tools/common/common.h"
+#include "mcp/tools/common/context.h"
+
+#include "base/allocator.h"
+
+static void
+call_rebuild_index(const mcpc_tool_t *tool, mcpc_ucbr_t *result)
+{
+  tiny_mcp_tools_context_t *context = tiny_mcp_tools_context_current();
+  tiny_rebuild_report_t report;
+  tiny_search_index_t *rebuilt;
+  tiny_store_status_t status;
+  tiny_json_buffer_t json;
+  (void)tool;
+  if (!context)
+    {
+      tiny_mcp_tool_add_error(result, "INTERNAL_ERROR", "tool context is unavailable");
+      return;
+    }
+  status = tiny_store_rebuild(context->store, &report);
+  if (status != TINY_STORE_OK)
+    {
+      tiny_mcp_tool_add_error(result, tiny_store_status_name(status), "index rebuild failed");
+      return;
+    }
+  rebuilt = tiny_mcp_tools_build_search_index(context->store);
+  if (!rebuilt)
+    {
+      tiny_search_index_free(context->search_index);
+      context->search_index = NULL;
+      tiny_mcp_tool_add_error(result, "INTERNAL_ERROR", "search index allocation failed");
+      return;
+    }
+  tiny_search_index_free(context->search_index);
+  context->search_index = rebuilt;
+  tiny_json_init(&json);
+  tiny_json_raw(&json, "{\"status\":\"OK\",\"messages_indexed\":");
+  tiny_json_u64(&json, report.messages_indexed);
+  tiny_json_raw(&json, ",\"records_removed\":");
+  tiny_json_u64(&json, report.records_removed);
+  tiny_json_raw(&json, ",\"bytes_before\":");
+  tiny_json_u64(&json, report.bytes_before);
+  tiny_json_raw(&json, ",\"bytes_after\":");
+  tiny_json_u64(&json, report.bytes_after);
+  tiny_json_raw(&json, "}");
+  tiny_mcp_tool_add_json(result, &json);
+  tiny_json_free(&json);
+}
+
+bool
+tiny_mcp_register_rebuild_index(mcpc_server_t *server)
+{
+  mcpc_tool_t *tool = tiny_mcp_tool_new("rebuild_index", "Compact and rebuild", call_rebuild_index);
+  return tool && mcpc_server_add_tool(server, tool) == MCPC_EC_0;
+}