修复打手短信验证码发送

apps/backend/src/db/migrations/012_worker_sms_codes.sql

@@ -0,0 +1,29 @@
+CREATE TABLE IF NOT EXISTS worker_sms_codes (
+  id BIGSERIAL PRIMARY KEY,
+  phone TEXT NOT NULL,
+  purpose TEXT NOT NULL DEFAULT 'register',
+  code_hash TEXT NOT NULL,
+  expires_at TIMESTAMPTZ NOT NULL,
+  consumed_at TIMESTAMPTZ,
+  created_at TIMESTAMPTZ NOT NULL
+);
+
+CREATE INDEX IF NOT EXISTS idx_worker_sms_codes_phone_created
+  ON worker_sms_codes(phone, created_at DESC);
+
+UPDATE worker_users wu
+SET phone = ''
+FROM (
+  SELECT MIN(id) AS keep_id, phone
+  FROM worker_users
+  WHERE phone != ''
+  GROUP BY phone
+  HAVING COUNT(*) > 1
+) dup
+WHERE wu.phone = dup.phone AND wu.id <> dup.keep_id;
+
+CREATE UNIQUE INDEX IF NOT EXISTS idx_worker_users_phone
+  ON worker_users(phone)
+  WHERE phone != '';
+
+COMMENT ON TABLE worker_sms_codes IS '打手注册短信验证码（哈希存储，一次性消费）';