feat：移除了弹窗，服务器添加sls

packages/app-lib/migrations/20260713170000_add-offline-minecraft-skin.sql

@@ -0,0 +1,33 @@
+CREATE TABLE offline_minecraft_skins (
+	minecraft_user_uuid TEXT NOT NULL,
+	texture_key TEXT NOT NULL,
+	variant TEXT NOT NULL CHECK (variant IN ('CLASSIC', 'SLIM', 'UNKNOWN')),
+
+	PRIMARY KEY (minecraft_user_uuid)
+);
+
+-- Keep offline skin selections when an account is temporarily removed, matching
+-- the saved-skin tables, while still rejecting selections for unknown users.
+CREATE TRIGGER offline_minecraft_skins_user_uuid_insert_check
+	BEFORE INSERT ON offline_minecraft_skins FOR EACH ROW
+	BEGIN
+		SELECT CASE WHEN NOT EXISTS (
+			SELECT 1 FROM minecraft_users WHERE uuid = NEW.minecraft_user_uuid
+		) THEN RAISE(ABORT, 'Cannot add an offline skin for an unknown Minecraft user UUID') END;
+	END;
+
+CREATE TRIGGER offline_minecraft_skins_user_uuid_update_check
+	BEFORE UPDATE ON offline_minecraft_skins FOR EACH ROW
+	BEGIN
+		SELECT CASE WHEN NOT EXISTS (
+			SELECT 1 FROM minecraft_users WHERE uuid = NEW.minecraft_user_uuid
+		) THEN RAISE(ABORT, 'Cannot change an offline skin to refer to an unknown Minecraft user UUID') END;
+	END;
+
+CREATE TRIGGER offline_minecraft_skins_user_uuid_update_cascade
+	AFTER UPDATE OF uuid ON minecraft_users FOR EACH ROW
+	BEGIN
+		UPDATE offline_minecraft_skins
+		SET minecraft_user_uuid = NEW.uuid
+		WHERE minecraft_user_uuid = OLD.uuid;
+	END;