feat(frontend): add memory components, temple/war-room pages, and composables

- Add DailyDigestCard and ReminderToast memory components
- Add temple and war-room page routes
- Add memory API module with TypeScript definitions
- Add chat composables: useClientTime, useDailyDigest, useSidebarPlan
- Simplify chat/logs/settings pages (remove unused code)
- Add settingsPage.css

frontend/src/api/memory.js

@@ -0,0 +1,37 @@
+import api from './index'
+
+/**
+ * Daily Digest API
+ */
+
+export async function getDailyDigest(date) {
+  return api.get(`/api/memory/daily-digest/${date}`)
+}
+
+export async function getRecentDigests(limit = 7) {
+  return api.get('/api/memory/daily-digests', { params: { limit } })
+}
+
+/**
+ * Reminder API
+ */
+
+export async function createReminder(content, triggerAt, triggerType = 'time') {
+  return api.post('/api/memory/reminders', {
+    content,
+    trigger_at: triggerAt,
+    trigger_type: triggerType,
+  })
+}
+
+export async function snoozeReminder(id, minutes) {
+  return api.post(`/api/memory/reminders/${id}/snooze`, { minutes })
+}
+
+export async function dismissReminder(id) {
+  return api.delete(`/api/memory/reminders/${id}`)
+}
+
+export async function getDueReminders() {
+  return api.get('/api/memory/reminders/due')
+}