🔧 Frontend review fixes & quality improvements

- Fixed race condition in apiCache TTL handling by passing ttl per-entry
- Removed double snapshot reassignment bug after switch cases in useRenderers.ts  
- Replaced `as any` cast on transport_state with runtime guard (isTransportState)
- Fixed invalidate() to preserve subscriptions instead of deleting them
- Migrated reactive(Map) → shallowRef + explicit reactivity triggers (triggerSnapshotReactive, triggerLoadingReactice)
- Added onUnmounted cleanup for debounce timer in useRenderer()
- Exposed resetSSE() to allow reinitialization after SSE reconnect
- Split deep watch in useTabs.ts into separate lightweight watches without {deep: true}
- Fixed swipe gesture to capture startX in onSwipeStart instead of using final clientX
- Added minimal JSON validation log for null responses (DEV mode only)
- Implemented ARIA labels on transport controls and volume slider
- Added UI notifications for network errors via uiStore.notifyError()
+ Removed obsolete toRaw() usage and import after shallowRef migration
- Added missing reactivity triggers for state_changed, queue_refreshing/updated cases

pmoapp/webapp/src/views/UnifiedControlView.vue

@@ -34,17 +34,19 @@ const rendererDrawerOpen = ref(false);
 // Ref pour le swipe edge detection
 const viewRef = ref<HTMLElement | null>(null);
 
+// Position initiale du swipe pour détecter un swipe depuis le bord gauche
+const swipeStartX = ref(0);
+
 // Swipe depuis le bord gauche pour ouvrir le drawer
 useSwipe(viewRef, {
     threshold: 50,
+    onSwipeStart(e: TouchEvent) {
+        swipeStartX.value = e.touches[0]?.clientX ?? 0;
+    },
     onSwipeEnd(_e: TouchEvent, swipeDirection: string) {
         // Swipe right depuis le bord gauche → ouvrir drawer
-        if (swipeDirection === "right" && !drawerOpen.value) {
-            const touch = _e.changedTouches[0];
-            // Vérifier que le swipe commence depuis le bord gauche (< 50px)
-            if (touch && touch.clientX < 50) {
-                drawerOpen.value = true;
-            }
+        if (swipeDirection === "right" && !drawerOpen.value && swipeStartX.value < 50) {
+            drawerOpen.value = true;
         }
     },
 });