feat: update plugin entry, install script, and docs for API Key auth

- plugin/index.ts: use apiKey instead of challengeUuid
- scripts/install.mjs: update prompts and examples
- README.md: update config docs and examples

README.md

@@ -76,7 +76,7 @@ node scripts/install.mjs --verbose
 
 ## 配置
 
-1. 在 HarborForge Monitor 中注册服务器，获取 `challengeUuid`
+1. 在 HarborForge Monitor 中注册服务器，获取 `apiKey`
 
 2. 编辑 `~/.openclaw/openclaw.json`:
 
@@ -87,7 +87,7 @@ node scripts/install.mjs --verbose
       "enabled": true,
       "backendUrl": "https://monitor.hangman-lab.top",
       "identifier": "my-server-01",
-      "challengeUuid": "your-challenge-uuid-here",
+      "apiKey": "your-api-key-here",
       "reportIntervalSec": 30,
       "httpFallbackIntervalSec": 60,
       "logLevel": "info"
@@ -109,7 +109,7 @@ openclaw gateway restart
 | `enabled` | boolean | `true` | 是否启用插件 |
 | `backendUrl` | string | `https://monitor.hangman-lab.top` | Monitor 后端地址 |
 | `identifier` | string | 自动检测 hostname | 服务器标识符 |
-| `challengeUuid` | string | 必填 | 注册挑战 UUID |
+| `apiKey` | string | 可选 | API Key 认证（从 HarborForge Monitor 获取） |
 | `reportIntervalSec` | number | `30` | 报告间隔（秒） |
 | `httpFallbackIntervalSec` | number | `60` | HTTP 回退间隔（秒） |
 | `logLevel` | string | `"info"` | 日志级别: debug/info/warn/error |
@@ -151,7 +151,7 @@ npm run build
 
 ```bash
 cd server
-HF_MONITOR_CHALLENGE_UUID=test-uuid \
+HF_MONITOR_API_KEY=your-api-key \
 HF_MONITOR_BACKEND_URL=http://localhost:8000 \
 HF_MONITOR_LOG_LEVEL=debug \
 node telemetry.mjs