feat(ui): show richer gemini quota details

ui/src/components/shared/quota-tooltip-content.tsx

@@ -37,6 +37,23 @@ function formatPlanLabel(planType: string | null | undefined): string | null {
   return normalized.length > 0 ? normalized.join(' ') : planType;
 }
 
+function formatAbsoluteResetTime(resetTime: string | null): string | null {
+  if (!resetTime) return null;
+  try {
+    const parsed = new Date(resetTime);
+    if (Number.isNaN(parsed.getTime())) return null;
+    return parsed.toLocaleString(undefined, {
+      month: '2-digit',
+      day: '2-digit',
+      hour: '2-digit',
+      minute: '2-digit',
+      hour12: false,
+    });
+  } catch {
+    return null;
+  }
+}
+
 function getClaudeWindowDisplayLabel(rateLimitType: string, fallback: string): string {
   switch (rateLimitType) {
     case 'five_hour':
@@ -235,19 +252,45 @@ export function QuotaTooltipContent({ quota, resetTime }: QuotaTooltipContentPro
 
   // Gemini provider tooltip
   if (isGeminiQuotaResult(quota)) {
+    const hasBucketResetTime = quota.buckets.some((bucket) => !!bucket.resetTime);
+
     return (
       <div className="text-xs space-y-1">
+        {quota.tierLabel && (
+          <div className="flex justify-between gap-4">
+            <span className="text-muted-foreground">Tier</span>
+            <span className="font-mono">{quota.tierLabel}</span>
+          </div>
+        )}
+        {quota.creditBalance !== null && quota.creditBalance !== undefined && (
+          <div className="flex justify-between gap-4">
+            <span className="text-muted-foreground">Credits</span>
+            <span className="font-mono">{quota.creditBalance.toLocaleString()}</span>
+          </div>
+        )}
         <p className="font-medium">Buckets:</p>
         {quota.buckets.map((b) => (
-          <div key={b.id} className="flex justify-between gap-4">
-            <span className={cn(b.remainingPercent < 20 && 'text-red-500')}>
-              {b.label}
-              {b.tokenType ? ` (${b.tokenType})` : ''}
-            </span>
-            <span className="font-mono">{b.remainingPercent}%</span>
+          <div key={b.id} className="space-y-0.5">
+            <div className="flex justify-between gap-4">
+              <span className={cn(b.remainingPercent < 20 && 'text-red-500')}>
+                {b.label}
+                {b.tokenType ? ` (${b.tokenType})` : ''}
+              </span>
+              <span className="font-mono">{b.remainingPercent}%</span>
+            </div>
+            {((b.remainingAmount !== null && b.remainingAmount !== undefined) || b.resetTime) && (
+              <div className="flex justify-between gap-4 text-[11px] text-muted-foreground">
+                <span>
+                  {b.remainingAmount !== null && b.remainingAmount !== undefined
+                    ? `${b.remainingAmount.toLocaleString()} remaining`
+                    : ''}
+                </span>
+                <span>{formatAbsoluteResetTime(b.resetTime) ?? ''}</span>
+              </div>
+            )}
           </div>
         ))}
-        <ResetTimeIndicator resetTime={resetTime} />
+        {!hasBucketResetTime && <ResetTimeIndicator resetTime={resetTime} />}
       </div>
     );
   }

ui/src/lib/api-client.ts

@@ -611,6 +611,8 @@ export interface GeminiCliBucket {
   remainingFraction: number;
   /** Remaining quota as percentage (0-100) */
   remainingPercent: number;
+  /** Remaining quota count when the upstream API provides it */
+  remainingAmount?: number | null;
   /** ISO timestamp when quota resets, null if unknown */
   resetTime: string | null;
   /** Model IDs in this bucket */
@@ -625,6 +627,12 @@ export interface GeminiCliQuotaResult {
   buckets: GeminiCliBucket[];
   /** GCP project ID for this account */
   projectId: string | null;
+  /** Human-readable Gemini tier label when available */
+  tierLabel?: string | null;
+  /** Stable Gemini tier identifier when available */
+  tierId?: string | null;
+  /** Available Google One AI credits when reported by the API */
+  creditBalance?: number | null;
   /** Timestamp of fetch */
   lastUpdated: number;
   /** Upstream HTTP status when available */

ui/tests/unit/ui/components/shared/quota-tooltip-content.test.tsx

@@ -0,0 +1,93 @@
+import { render, screen } from '@tests/setup/test-utils';
+import { describe, expect, it, vi } from 'vitest';
+import { QuotaTooltipContent } from '@/components/shared/quota-tooltip-content';
+import type { GeminiCliQuotaResult } from '@/lib/api-client';
+
+function createGeminiQuotaResult(
+  overrides: Partial<GeminiCliQuotaResult> = {}
+): GeminiCliQuotaResult {
+  return {
+    success: true,
+    buckets: [
+      {
+        id: 'gemini-flash-lite-series::combined',
+        label: 'Gemini Flash Lite Series',
+        tokenType: null,
+        remainingFraction: 1,
+        remainingPercent: 100,
+        remainingAmount: 100,
+        resetTime: '2026-01-30T09:00:00Z',
+        modelIds: ['gemini-2.5-flash-lite'],
+      },
+      {
+        id: 'gemini-flash-series::combined',
+        label: 'Gemini Flash Series',
+        tokenType: null,
+        remainingFraction: 0.82,
+        remainingPercent: 82,
+        remainingAmount: 82,
+        resetTime: '2026-01-30T14:00:00Z',
+        modelIds: ['gemini-3-flash-preview'],
+      },
+    ],
+    projectId: 'cloudaicompanion-test-123',
+    tierLabel: 'Pro',
+    tierId: 'g1-pro-tier',
+    creditBalance: 12,
+    lastUpdated: Date.now(),
+    ...overrides,
+  };
+}
+
+describe('QuotaTooltipContent', () => {
+  it('renders Gemini tier, credits, remaining amount, and bucket reset timestamps', () => {
+    const quota = createGeminiQuotaResult();
+    const expectedReset = new Date('2026-01-30T14:00:00Z').toLocaleString(undefined, {
+      month: '2-digit',
+      day: '2-digit',
+      hour: '2-digit',
+      minute: '2-digit',
+      hour12: false,
+    });
+
+    render(<QuotaTooltipContent quota={quota} resetTime={quota.buckets[0].resetTime} />);
+
+    expect(screen.getByText('Tier')).toBeInTheDocument();
+    expect(screen.getByText('Pro')).toBeInTheDocument();
+    expect(screen.getByText('Credits')).toBeInTheDocument();
+    expect(screen.getByText('12')).toBeInTheDocument();
+    expect(screen.getByText('Gemini Flash Lite Series')).toBeInTheDocument();
+    expect(screen.getByText('100 remaining')).toBeInTheDocument();
+    expect(screen.getByText('82 remaining')).toBeInTheDocument();
+    expect(screen.getByText(expectedReset)).toBeInTheDocument();
+  });
+
+  it('falls back to the shared reset indicator when Gemini buckets omit reset timestamps', () => {
+    vi.useFakeTimers();
+    vi.setSystemTime(new Date('2026-01-29T00:00:00Z'));
+
+    const quota = createGeminiQuotaResult({
+      buckets: [
+        {
+          id: 'gemini-flash-series::combined',
+          label: 'Gemini Flash Series',
+          tokenType: null,
+          remainingFraction: 0.75,
+          remainingPercent: 75,
+          remainingAmount: 75,
+          resetTime: null,
+          modelIds: ['gemini-3-flash-preview'],
+        },
+      ],
+      creditBalance: null,
+      tierLabel: null,
+      tierId: null,
+    });
+
+    render(<QuotaTooltipContent quota={quota} resetTime="2026-01-29T03:00:00Z" />);
+
+    expect(screen.getByText(/Resets/i)).toBeInTheDocument();
+
+    vi.useRealTimers();
+  });
+});