优化后端鉴权与日志安全

apps/backend/src/db/migrations/001_init.sql

@@ -6,6 +6,7 @@ CREATE TABLE IF NOT EXISTS admin_users (
   password_hash TEXT NOT NULL,
   role TEXT NOT NULL,
   status TEXT NOT NULL,
+  session_version INTEGER NOT NULL DEFAULT 1,
   created_at TIMESTAMPTZ NOT NULL,
   updated_at TIMESTAMPTZ NOT NULL
 );