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.rs

@@ -17,18 +17,10 @@ pub(crate) use tray_runtime::*;
 
 use std::collections::HashMap;
 use std::sync::{Arc, Mutex, OnceLock, RwLock};
-use std::sync::atomic::{AtomicBool, Ordering};
+use std::sync::atomic::AtomicBool;
 
-use tauri::{
-    menu::{MenuBuilder, MenuItemBuilder, PredefinedMenuItem},
-    tray::{MouseButton, TrayIcon, TrayIconBuilder, TrayIconEvent},
-    Emitter, Manager,
-};
+use tauri::{Emitter, Manager};
 use lib_commands::*;
-// MouseButtonState is only matched on non-Windows targets — on Windows the
-// tray uses DoubleClick which doesn't carry a button_state.
-#[cfg(not(target_os = "windows"))]
-use tauri::tray::MouseButtonState;
 
 /// Tracks which user-configured shortcuts are currently registered (shortcut_str → action).
 /// Prevents on_shortcut() accumulating duplicate handlers across JS reloads (HMR / StrictMode).