fix: show quota reset times in local timezone (#1128)

Formats rate-limit reset timestamps in the client timezone
Keeps server-provided reset labels as fallbacks
Applies consistent reset labels across header, usage, and VS Code views

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

@@ -4,6 +4,7 @@ export {
   clampPercent,
   formatPercent,
   formatQuotaValueLabel,
+  formatQuotaResetLabel,
   resolveUsageTone,
   formatWindowLabel,
   calculatePace,

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

@@ -19,6 +19,42 @@ export const formatQuotaValueLabel = (
   return valueLabel ?? formatPercent(percent);
 };
 
+export const formatQuotaResetLabel = (
+  resetAt: number | null,
+  fallback?: string | null,
+): string => {
+  if (!resetAt) {
+    return fallback ?? '';
+  }
+
+  try {
+    const resetDate = new Date(resetAt);
+    if (!Number.isFinite(resetDate.getTime())) {
+      return fallback ?? '';
+    }
+
+    const now = new Date();
+    const isToday = resetDate.toDateString() === now.toDateString();
+
+    if (isToday) {
+      return resetDate.toLocaleTimeString(undefined, {
+        hour: 'numeric',
+        minute: '2-digit',
+      });
+    }
+
+    return resetDate.toLocaleString(undefined, {
+      month: 'short',
+      day: 'numeric',
+      weekday: 'short',
+      hour: 'numeric',
+      minute: '2-digit',
+    });
+  } catch {
+    return fallback ?? '';
+  }
+};
+
 export const resolveUsageTone = (percent: number | null): 'safe' | 'warn' | 'critical' => {
   if (percent === null) {
     return 'safe';