docs: Update CLAUDE.md with new features

- Update tool count: 20 → 21
- Add haproxy_set_domain_state to server management tools
- Add container status to health check example
- Update server.py description (~1600 lines, 21 tools)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CLAUDE.md

@@ -218,7 +218,8 @@ Returns overall system status:
   "components": {
     "mcp": {"status": "ok"},
     "haproxy": {"status": "ok", "version": "3.3.2", "uptime_sec": 3600},
-    "config_files": {"status": "ok", "files": {"map_file": "ok", "servers_file": "ok"}}
+    "config_files": {"status": "ok", "files": {"map_file": "ok", "servers_file": "ok"}},
+    "container": {"status": "ok", "state": "running"}
   }
 }
 ```
@@ -240,7 +241,7 @@ Returns backend server status for a specific domain:
 
 **Status values:** `healthy` (all UP), `degraded` (partial UP), `down` (all DOWN), `no_servers`
 
-## MCP Tools (20 total)
+## MCP Tools (21 total)
 
 ### Domain Management
 | Tool | Description |
@@ -258,6 +259,7 @@ Returns backend server status for a specific domain:
 | `haproxy_remove_server` | Remove server from slot, auto-saved |
 | `haproxy_set_server_state` | Set state: ready/drain/maint |
 | `haproxy_set_server_weight` | Set weight (0-256) |
+| `haproxy_set_domain_state` | Set all servers of domain to ready/drain/maint |
 
 ### Health Check
 | Tool | Description |
@@ -335,7 +337,7 @@ echo "set server pool_1/pool_1_1 state ready" | nc localhost 9999
 ```
 /opt/haproxy/
 ├── mcp/                 # MCP server (streamable-http)
-│   └── server.py        # Main MCP server (~1500 lines, 20 tools)
+│   └── server.py        # Main MCP server (~1600 lines, 21 tools)
 ├── conf/
 │   ├── haproxy.cfg      # Main HAProxy config (100 pool backends)
 │   ├── domains.map      # Domain → Pool mapping