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/i18n/locales/en.ts

@@ -911,6 +911,7 @@ export default {
     new_0_5_15_8: 'Fix double-wrapping of download URLs in MarkdownRenderer',
     new_0_5_15_9: 'Fix Hermes markdown media rendering and sync retry',
     new_0_5_15_10: 'Refactor to remove upstream env dependency',
+    new_0_5_15_11: 'If the Kanban feature is not available, please upgrade hermes-agent',
     new_0_5_13_1: 'Add message queue for sequential run processing to prevent concurrent request conflicts',
     new_0_5_13_2: 'Support two-level skills directory structure with misc category for flat skills',
     new_0_5_13_3: 'Filter out ephemeral sessions during startup sync to avoid importing internal sessions',