refactor(lib_commands): drop super::* + glob re-export in sync + lib.rs

Hotspot G next slice — replace cascade-imports in lib_commands/sync/
{device,batch,tray}.rs with explicit per-symbol imports + per-command
re-exports.

sync/mod.rs lists each Tauri command from device / batch / tray
explicitly, plus the three internal helpers consumed by lib.rs and
ui/mini.rs (is_tiling_wm, stop_audio_engine, try_build_tray_icon).
The previous broad `pub(crate) use device::*` etc. is gone.

Inside the .rs files: each `use super::*` is replaced with what the
file actually needs — `super::device::{TrackSyncInfo, ...}` for batch,
`crate::tray_runtime::{Tray*}` + `crate::audio` + `super::super::ui::
{PAUSE_RENDERING_JS, RESUME_RENDERING_JS}` for tray, etc.

Cleanup in lib.rs: drop the now-unused tauri menu/tray imports
(MenuBuilder/MenuItemBuilder/PredefinedMenuItem/TrayIcon*/MouseButton*)
— tray.rs owns those now. Drop `Ordering` (no longer used at lib.rs
scope). Drop `pub(crate) use file_transfer::*;` from
lib_commands/mod.rs (file_transfer is now imported by direct path
where needed: `super::super::file_transfer::*`).

src-tauri/src/lib_commands/mod.rs

@@ -8,6 +8,5 @@ mod ui;
 
 pub(crate) use app_api::*;
 pub(crate) use cache::*;
-pub(crate) use file_transfer::*;
 pub(crate) use sync::*;
 pub(crate) use ui::*;

src-tauri/src/lib_commands/sync/batch.rs

@@ -1,4 +1,15 @@
-use super::*;
+use std::sync::atomic::{AtomicBool, Ordering};
+use std::sync::Arc;
+
+use tauri::Emitter;
+
+use crate::sync_cancel_flags;
+
+use super::super::file_transfer::{finalize_streamed_download, subsonic_http_client};
+use super::device::{
+    build_track_path, get_removable_drives, is_path_on_mounted_volume, SyncBatchResult,
+    TrackSyncInfo,
+};
 
 #[tauri::command]
 pub(crate) async fn list_device_dir_files(dir: String) -> Result<Vec<String>, String> {

src-tauri/src/lib_commands/sync/device.rs

@@ -1,4 +1,6 @@
-use super::*;
+use tauri::Emitter;
+
+use super::super::file_transfer::{finalize_streamed_download, subsonic_http_client};
 
 // ─── Device Sync ─────────────────────────────────────────────────────────────
 

src-tauri/src/lib_commands/sync/mod.rs

@@ -1,9 +1,19 @@
-use super::*;
-
 mod device;
 mod batch;
 mod tray;
 
-pub(crate) use device::*;
-pub(crate) use batch::*;
-pub(crate) use tray::*;
+// Tauri commands re-exported for the lib.rs invoke_handler:
+pub(crate) use device::{
+    get_removable_drives, read_device_manifest, rename_device_files, sync_track_to_device,
+    write_device_manifest, write_playlist_m3u8, compute_sync_paths,
+};
+pub(crate) use batch::{
+    calculate_sync_payload, cancel_device_sync, delete_device_file, delete_device_files,
+    list_device_dir_files, sync_batch_to_device,
+};
+pub(crate) use tray::{
+    is_tiling_wm_cmd, no_compositing_mode, set_tray_menu_labels, set_tray_tooltip,
+    toggle_tray_icon,
+};
+// Internal helpers consumed elsewhere in the crate:
+pub(crate) use tray::{is_tiling_wm, stop_audio_engine, try_build_tray_icon};

src-tauri/src/lib_commands/sync/tray.rs

@@ -1,4 +1,18 @@
-use super::*;
+use std::sync::atomic::Ordering;
+
+use tauri::menu::{MenuBuilder, MenuItemBuilder, PredefinedMenuItem};
+use tauri::tray::{MouseButton, TrayIcon, TrayIconBuilder, TrayIconEvent};
+use tauri::{Emitter, Manager};
+#[cfg(not(target_os = "windows"))]
+use tauri::tray::MouseButtonState;
+
+use crate::audio;
+use crate::tray_runtime::{
+    tray_state_icon, TrayMenuItems, TrayMenuItemsState, TrayMenuLabels, TrayMenuLabelsState,
+    TrayPlaybackState, TrayState, TrayTooltip,
+};
+
+use super::super::ui::{PAUSE_RENDERING_JS, RESUME_RENDERING_JS};
 
 pub(crate) fn build_tray_icon(app: &tauri::AppHandle) -> tauri::Result<TrayIcon> {
     let labels = app