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

drizzle/0000_public_leo.sql

@@ -0,0 +1,69 @@
+CREATE TABLE `claws` (
+	`id` varchar(21) NOT NULL,
+	`api_key` varchar(64) NOT NULL,
+	`name` varchar(100) NOT NULL,
+	`platform` varchar(20),
+	`model` varchar(50),
+	`ip` varchar(45),
+	`latitude` decimal(10,7),
+	`longitude` decimal(10,7),
+	`city` varchar(100),
+	`country` varchar(100),
+	`country_code` varchar(5),
+	`region` varchar(50),
+	`last_heartbeat` datetime,
+	`total_tasks` int DEFAULT 0,
+	`created_at` datetime DEFAULT NOW(),
+	`updated_at` datetime DEFAULT NOW(),
+	CONSTRAINT `claws_id` PRIMARY KEY(`id`),
+	CONSTRAINT `claws_api_key_unique` UNIQUE(`api_key`)
+);
+--> statement-breakpoint
+CREATE TABLE `geo_cache` (
+	`ip` varchar(45) NOT NULL,
+	`latitude` decimal(10,7),
+	`longitude` decimal(10,7),
+	`city` varchar(100),
+	`country` varchar(100),
+	`country_code` varchar(5),
+	`region` varchar(50),
+	`updated_at` datetime DEFAULT NOW(),
+	CONSTRAINT `geo_cache_ip` PRIMARY KEY(`ip`)
+);
+--> statement-breakpoint
+CREATE TABLE `heartbeats` (
+	`id` bigint AUTO_INCREMENT NOT NULL,
+	`claw_id` varchar(21) NOT NULL,
+	`ip` varchar(45),
+	`timestamp` datetime DEFAULT NOW(),
+	CONSTRAINT `heartbeats_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `tasks` (
+	`id` bigint AUTO_INCREMENT NOT NULL,
+	`claw_id` varchar(21) NOT NULL,
+	`summary` varchar(500),
+	`duration_ms` int,
+	`model` varchar(50),
+	`tools_used` json,
+	`timestamp` datetime DEFAULT NOW(),
+	CONSTRAINT `tasks_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `token_usage` (
+	`id` bigint AUTO_INCREMENT NOT NULL,
+	`claw_id` varchar(21) NOT NULL,
+	`date` varchar(10) NOT NULL,
+	`input_tokens` bigint NOT NULL DEFAULT 0,
+	`output_tokens` bigint NOT NULL DEFAULT 0,
+	`created_at` datetime DEFAULT NOW(),
+	`updated_at` datetime DEFAULT NOW(),
+	CONSTRAINT `token_usage_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE INDEX `heartbeats_claw_id_idx` ON `heartbeats` (`claw_id`);--> statement-breakpoint
+CREATE INDEX `heartbeats_timestamp_idx` ON `heartbeats` (`timestamp`);--> statement-breakpoint
+CREATE INDEX `tasks_claw_id_idx` ON `tasks` (`claw_id`);--> statement-breakpoint
+CREATE INDEX `tasks_timestamp_idx` ON `tasks` (`timestamp`);--> statement-breakpoint
+CREATE INDEX `token_usage_claw_id_idx` ON `token_usage` (`claw_id`);--> statement-breakpoint
+CREATE INDEX `token_usage_date_idx` ON `token_usage` (`date`);