docs(README): 更新项目说明文档，完善架构与启动指南

- 调整 CLAUDE.md 内容，增加使用指导和架构概览
- 补充微服务启动说明及单服务启动命令
- 明确 Gateway 服务器四阶段启动流程和职责划分
- 细化后端目录结构说明，补充主要文件职责描述
- 新增系统分层结构图，优化整体架构理解
- 更新 .gitignore，添加 runs 目录忽略规则
- 同步 .omc 相关状态文件，更新项目状态跟踪信息

.omc/state/subagent-tracking.json

@@ -1,17 +1,26 @@
 {
   "agents": [
     {
-      "agent_id": "a8305a91e192b2196",
+      "agent_id": "abeaf609b74a2b7ee",
       "agent_type": "Explore",
-      "started_at": "2026-03-19T17:00:33.284Z",
+      "started_at": "2026-03-24T08:01:40.015Z",
       "parent_mode": "none",
       "status": "completed",
-      "completed_at": "2026-03-19T17:02:19.439Z",
-      "duration_ms": 106155
+      "completed_at": "2026-03-24T08:02:31.822Z",
+      "duration_ms": 51807
+    },
+    {
+      "agent_id": "afb6750eaae72bc72",
+      "agent_type": "Explore",
+      "started_at": "2026-03-24T08:56:21.471Z",
+      "parent_mode": "none",
+      "status": "completed",
+      "completed_at": "2026-03-24T08:57:27.856Z",
+      "duration_ms": 66385
     }
   ],
-  "total_spawned": 1,
-  "total_completed": 1,
+  "total_spawned": 2,
+  "total_completed": 2,
   "total_failed": 0,
-  "last_updated": "2026-03-19T17:02:39.175Z"
+  "last_updated": "2026-03-24T08:59:06.380Z"
 }