feat: 增强 Webhook 通知系统（#485）

drizzle/0043_lonely_rick_jones.sql

@@ -0,0 +1,62 @@
+-- Step 1: 创建枚举类型（幂等）
+DO $$ BEGIN
+	CREATE TYPE "public"."notification_type" AS ENUM('circuit_breaker', 'daily_leaderboard', 'cost_alert');
+EXCEPTION
+	WHEN duplicate_object THEN null;
+END $$;
+--> statement-breakpoint
+
+DO $$ BEGIN
+	CREATE TYPE "public"."webhook_provider_type" AS ENUM('wechat', 'feishu', 'dingtalk', 'telegram', 'custom');
+EXCEPTION
+	WHEN duplicate_object THEN null;
+END $$;
+--> statement-breakpoint
+
+-- Step 2: 创建表（幂等）
+CREATE TABLE IF NOT EXISTS "notification_target_bindings" (
+	"id" serial PRIMARY KEY NOT NULL,
+	"notification_type" "notification_type" NOT NULL,
+	"target_id" integer NOT NULL,
+	"is_enabled" boolean DEFAULT true NOT NULL,
+	"schedule_cron" varchar(100),
+	"schedule_timezone" varchar(50) DEFAULT 'Asia/Shanghai',
+	"template_override" jsonb,
+	"created_at" timestamp with time zone DEFAULT now()
+);
+--> statement-breakpoint
+CREATE TABLE IF NOT EXISTS "webhook_targets" (
+	"id" serial PRIMARY KEY NOT NULL,
+	"name" varchar(100) NOT NULL,
+	"provider_type" "webhook_provider_type" NOT NULL,
+	"webhook_url" varchar(1024),
+	"telegram_bot_token" varchar(256),
+	"telegram_chat_id" varchar(64),
+	"dingtalk_secret" varchar(256),
+	"custom_template" jsonb,
+	"custom_headers" jsonb,
+	"proxy_url" varchar(512),
+	"proxy_fallback_to_direct" boolean DEFAULT false,
+	"is_enabled" boolean DEFAULT true NOT NULL,
+	"last_test_at" timestamp with time zone,
+	"last_test_result" jsonb,
+	"created_at" timestamp with time zone DEFAULT now(),
+	"updated_at" timestamp with time zone DEFAULT now()
+);
+--> statement-breakpoint
+
+-- Step 3: 兼容旧配置（幂等）
+ALTER TABLE "notification_settings" ADD COLUMN IF NOT EXISTS "use_legacy_mode" boolean DEFAULT true NOT NULL;--> statement-breakpoint
+
+-- Step 4: 外键约束（幂等）
+DO $$ BEGIN
+	ALTER TABLE "notification_target_bindings" ADD CONSTRAINT "notification_target_bindings_target_id_webhook_targets_id_fk" FOREIGN KEY ("target_id") REFERENCES "public"."webhook_targets"("id") ON DELETE cascade ON UPDATE no action;
+EXCEPTION
+	WHEN duplicate_object THEN null;
+END $$;
+--> statement-breakpoint
+
+-- Step 5: 索引（幂等）
+CREATE UNIQUE INDEX IF NOT EXISTS "unique_notification_target_binding" ON "notification_target_bindings" USING btree ("notification_type","target_id");--> statement-breakpoint
+CREATE INDEX IF NOT EXISTS "idx_notification_bindings_type" ON "notification_target_bindings" USING btree ("notification_type","is_enabled");--> statement-breakpoint
+CREATE INDEX IF NOT EXISTS "idx_notification_bindings_target" ON "notification_target_bindings" USING btree ("target_id","is_enabled");--> statement-breakpoint