feat: 跨实例同步移植 WIP 检查点（第1轮+2a+2b+synced_servers）

从 Axolotl 移植跨实例同步子系统，当前进度：

- 第1轮：synced_options/files.rs + mod.rs 骨架，state 层补齐 SyncedOption/InstanceSyncedOptions/CanonicalValue/GameOptionKind 等

- 2a：game_options 的 api_types/options_file/catalog(10文件)

- 2b：game_options 除 resource_pack_options/local_settings_editor 外的全部（settings_editor/write_shared_settings/fullscreen/launch_overrides/instance_support/read_instance_changes/pack_updates/source_selection + locales/5文件）；State 补 synced_options_lock/game_locale_indexer/lock_synced_options

- synced_servers：6 文件全部搬入

- 35+20 处 sqlx::query! 宏改写为非宏 query+bind

已知未完成：synced_servers::operations 依赖 synced_options::instance_option_supported（属 orchestration，第5轮），当前编译不通。

packages/app-lib/src/api/instance/synced_servers/mod.rs

@@ -0,0 +1,24 @@
+mod codec;
+mod modpack;
+mod operations;
+mod storage;
+mod types;
+
+const SERVERS_FILE: &str = "servers.dat";
+
+pub(crate) use self::codec::server_data;
+pub use self::modpack::{capture_modpack_servers, clear_modpack_servers};
+pub(crate) use self::operations::{
+    add_user_server, ensure_managed_server, list_server_records,
+    remove_server_by_index, update_server_by_index,
+};
+pub use self::operations::{
+    desync_server, list_synced_servers, remove_synced_server,
+    update_synced_server,
+};
+pub(super) use self::operations::{
+    detach_servers, ensure_servers, merge_servers_from_instance,
+    reconcile_servers, seed_servers,
+};
+pub(super) use self::storage::canonical_exists;
+pub use self::types::{DesyncServerMode, ServerSource, SyncedServer};