feat: add token usage tracking and leaderboard

- Add token_usage table with composite unique index for claw_id + date
- Add API endpoints: POST /token, GET /token/leaderboard, GET /token/stats
- Add TokenLeaderboard component with daily/total period toggle
- Add CLI commands: `token` and `stats` for reporting and viewing usage
- Add Redis caching for leaderboard with 1-minute TTL
- Add shared utilities: authenticateRequest, getTodayDateString
- Use UPSERT pattern for atomic token updates
- Add i18n translations (en/zh) for new UI elements

packages/claw-market/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@ricardweii/claw-market",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "description": "CLI tool for OpenClaw Market - report AI agent activity to the global heatmap",
   "type": "module",
   "bin": {