fix:修复每次启动都将 amos 帖子置为私密的 bug

server/internal/database/database.go

@@ -133,9 +133,6 @@ func migrate(db *sql.DB) error {
 	// 创建 visibility 索引
 	db.Exec("CREATE INDEX IF NOT EXISTS idx_posts_visibility ON posts(visibility)")
 
-	// 将 amos 用户的所有帖子设置为仅自己可见
-	db.Exec("UPDATE posts SET visibility = 1 WHERE user_id = (SELECT id FROM users WHERE username = 'amos')")
-
 	// 迁移：创建版本表
 	db.Exec(`
 		CREATE TABLE IF NOT EXISTS app_version (