feat: add History page for browsing Hermes sessions (v0.5.5) (#370)

Features:
- Add dedicated History page for browsing Hermes session history
- Independent session state (does not interfere with active chat)
- Auto-select first CLI session on page load
- Filter out api_server and cron sources

Components:
- New HistoryView.vue with isolated state management
- New HistoryMessageList.vue with session prop support
- Filters empty content and tool messages without toolName

Backend:
- Add GET /api/hermes/sessions/hermes endpoint (excludes api_server)
- Add GET /api/hermes/sessions/hermes/:id endpoint (404s for api_server)
- Add fetchHermesSessions() and fetchHermesSession() API functions

Cleanup:
- Remove localStorage session caching
- Simplify profile switching cache management
- Clean up废弃 cache cleanup calls

i18n:
- Add "History" translation to all 8 locales
- Add v0.5.5 changelog entries in all languages
- 🎉 Happy Labor Day!

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/client/src/components/layout/AppSidebar.vue

@@ -80,6 +80,13 @@ function openChangelog() {
             </svg>
             <span>{{ t("sidebar.chat") }}</span>
           </button>
+          <button class="nav-item" :class="{ active: selectedKey === 'hermes.history' }" @click="handleNav('hermes.history')">
+            <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
+              <circle cx="12" cy="12" r="10" />
+              <polyline points="12 6 12 12 16 14" />
+            </svg>
+            <span>{{ t("sidebar.history") }}</span>
+          </button>
           <button class="nav-item" :class="{ active: selectedKey === 'hermes.groupChat' }" @click="handleNav('hermes.groupChat')">
             <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
               <path d="M17 21v-2a4 4 0 0 0-4-4H5a4 4 0 0 0-4 4v2" />