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/src/index.ts

@@ -3,6 +3,8 @@ import { detectLocale, createTranslator, type Locale } from "./i18n/index.js";
 import { registerCommand } from "./commands/register.js";
 import { heartbeatCommand } from "./commands/heartbeat.js";
 import { taskCommand } from "./commands/task.js";
+import { tokenCommand } from "./commands/token.js";
+import { statsCommand } from "./commands/stats.js";
 import { configCommand } from "./commands/config.js";
 import { readConfig } from "./lib/config.js";
 import { DEFAULT_ENDPOINT } from "./lib/api.js";
@@ -59,6 +61,8 @@ function main(): void {
   registerCommand(program, t);
   heartbeatCommand(program, t);
   taskCommand(program, t);
+  tokenCommand(program, t);
+  statsCommand(program, t);
   configCommand(program, t);
 
   // Parse