fix: respect time format preference in UI

Add shared time formatting helpers that apply the Appearance time format preference consistently. Update visible time labels across chat, quota usage, scheduled tasks, tunnels, context details, git views, PR metadata, and passkey settings to use the selected 12-hour, 24-hour, or automatic format. Leave date-only and non-UI formatting untouched so unrelated behavior does not change.

packages/ui/src/lib/quota/utils.ts

@@ -1,3 +1,6 @@
+import { formatDateTimeForPreference, formatTimeForPreference } from '@/lib/timeFormat';
+import type { TimeFormatPreference } from '@/stores/useUIStore';
+
 export const clampPercent = (value: number | null): number | null => {
   if (typeof value !== 'number' || !Number.isFinite(value)) {
     return null;
@@ -22,6 +25,7 @@ export const formatQuotaValueLabel = (
 export const formatQuotaResetLabel = (
   resetAt: number | null,
   fallback?: string | null,
+  timeFormatPreference: TimeFormatPreference = 'auto',
 ): string => {
   if (!resetAt) {
     return fallback ?? '';
@@ -37,13 +41,10 @@ export const formatQuotaResetLabel = (
     const isToday = resetDate.toDateString() === now.toDateString();
 
     if (isToday) {
-      return resetDate.toLocaleTimeString(undefined, {
-        hour: 'numeric',
-        minute: '2-digit',
-      });
+      return formatTimeForPreference(resetDate, timeFormatPreference, { fallback: fallback ?? '' });
     }
 
-    return resetDate.toLocaleString(undefined, {
+    return formatDateTimeForPreference(resetDate, timeFormatPreference, {
       month: 'short',
       day: 'numeric',
       weekday: 'short',