fix(mobile): improve mobile UI for kanban, group chat and page headers (#562)

- Fix kanban loading spinner flickering on auto-refresh (silent mode)
- Fix group chat room-list transparent background on mobile
- Fix group chat sidebar auto-opening on mobile entry
- Fix page-header title overlapped by hamburger button on mobile
- Move hamburger button position to top: 10px
- Add changelog note about upgrading hermes-agent for kanban support
- Add i18n translations for all 8 locales

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

packages/client/src/views/hermes/KanbanView.vue

@@ -54,7 +54,7 @@ onMounted(async () => {
   await kanbanStore.refreshAll()
   refreshTimer.value = setInterval(() => {
     if (document.visibilityState === 'visible') {
-      void Promise.all([kanbanStore.fetchTasks(), kanbanStore.fetchStats()])
+      void Promise.all([kanbanStore.fetchTasks(true), kanbanStore.fetchStats()])
     }
   }, 15000)
 })
@@ -248,6 +248,7 @@ async function handleTaskCreated() {
 
 @media (max-width: $breakpoint-mobile) {
   .page-header {
+    padding: 16px 12px 16px 52px;
     flex-direction: column;
     align-items: flex-start;
     gap: 10px;