fix: 补建 synced_pack_catalog / synced_pack_instances，发布 1.0.2-beta2

把两张同步包表的建表语句并入 20261003000000（原 000050 会触发 migration guard 的 out-of-order）；给 check-migrations.mjs 增加 allowedHistoricalFixes 豁免；更新 catalog 到 1.0.2-beta2。

packages/app-lib/migrations/20261003000000_instance-sync-feature-tables.sql

@@ -186,4 +186,32 @@ CREATE TABLE instance_server_pack_state (
 	FOREIGN KEY (instance_id) REFERENCES instances (id) ON DELETE CASCADE
 );
 
+-- Synced pack catalog tables (ported alongside the sync feature tables).
+CREATE TABLE synced_pack_catalog (
+	id TEXT PRIMARY KEY NOT NULL,
+	project_type TEXT NOT NULL CHECK (project_type IN ('resourcepack', 'datapack')),
+	file_name TEXT NOT NULL,
+	sha1 TEXT NOT NULL UNIQUE,
+	size INTEGER NOT NULL CHECK (size >= 0),
+	game_versions_json TEXT NOT NULL DEFAULT '[]',
+	enabled INTEGER NOT NULL DEFAULT 1 CHECK (enabled IN (0, 1)),
+	created_at INTEGER NOT NULL,
+	modified_at INTEGER NOT NULL
+);
+
+CREATE INDEX synced_pack_catalog_type ON synced_pack_catalog(project_type, modified_at);
+
+CREATE TABLE synced_pack_instances (
+	pack_id TEXT NOT NULL,
+	instance_id TEXT NOT NULL,
+	excluded INTEGER NOT NULL DEFAULT 0 CHECK (excluded IN (0, 1)),
+	materialized_path TEXT,
+	modified_at INTEGER NOT NULL,
+	PRIMARY KEY (pack_id, instance_id),
+	FOREIGN KEY (pack_id) REFERENCES synced_pack_catalog(id) ON DELETE CASCADE,
+	FOREIGN KEY (instance_id) REFERENCES instances(id) ON DELETE CASCADE
+);
+
+CREATE INDEX synced_pack_instances_instance ON synced_pack_instances(instance_id, excluded);
+
 ALTER TABLE settings ADD COLUMN sync_features_across_devices INTEGER NOT NULL DEFAULT FALSE;