fix(usage): make api details card scrollable

Fetch all provider configs (Gemini, Claude, Codex, Vertex, OpenAI) and
compute SHA-256 auth_index from their API keys to map unresolved
credential entries to friendly provider names.

src/components/usage/ApiDetailsCard.tsx

@@ -1,7 +1,7 @@
-import { useState } from 'react';
+import { useState, useMemo } from 'react';
 import { useTranslation } from 'react-i18next';
 import { Card } from '@/components/ui/Card';
-import { formatTokensInMillions, formatUsd, type ApiStats } from '@/utils/usage';
+import { formatCompactNumber, formatUsd, type ApiStats } from '@/utils/usage';
 import styles from '@/pages/UsagePage.module.scss';
 
 export interface ApiDetailsCardProps {
@@ -10,9 +10,14 @@ export interface ApiDetailsCardProps {
   hasPrices: boolean;
 }
 
+type ApiSortKey = 'endpoint' | 'requests' | 'tokens' | 'cost';
+type SortDir = 'asc' | 'desc';
+
 export function ApiDetailsCard({ apiStats, loading, hasPrices }: ApiDetailsCardProps) {
   const { t } = useTranslation();
   const [expandedApis, setExpandedApis] = useState<Set<string>>(new Set());
+  const [sortKey, setSortKey] = useState<ApiSortKey>('requests');
+  const [sortDir, setSortDir] = useState<SortDir>('desc');
 
   const toggleExpand = (endpoint: string) => {
     setExpandedApis((prev) => {
@@ -26,65 +31,125 @@ export function ApiDetailsCard({ apiStats, loading, hasPrices }: ApiDetailsCardP
     });
   };
 
+  const handleSort = (key: ApiSortKey) => {
+    if (sortKey === key) {
+      setSortDir((d) => (d === 'asc' ? 'desc' : 'asc'));
+    } else {
+      setSortKey(key);
+      setSortDir(key === 'endpoint' ? 'asc' : 'desc');
+    }
+  };
+
+  const sorted = useMemo(() => {
+    const list = [...apiStats];
+    const dir = sortDir === 'asc' ? 1 : -1;
+    list.sort((a, b) => {
+      switch (sortKey) {
+        case 'endpoint': return dir * a.endpoint.localeCompare(b.endpoint);
+        case 'requests': return dir * (a.totalRequests - b.totalRequests);
+        case 'tokens': return dir * (a.totalTokens - b.totalTokens);
+        case 'cost': return dir * (a.totalCost - b.totalCost);
+        default: return 0;
+      }
+    });
+    return list;
+  }, [apiStats, sortKey, sortDir]);
+
+  const arrow = (key: ApiSortKey) =>
+    sortKey === key ? (sortDir === 'asc' ? ' ▲' : ' ▼') : '';
+
   return (
-    <Card title={t('usage_stats.api_details')}>
+    <Card title={t('usage_stats.api_details')} className={styles.detailsFixedCard}>
       {loading ? (
         <div className={styles.hint}>{t('common.loading')}</div>
-      ) : apiStats.length > 0 ? (
-        <div className={styles.apiList}>
-          {apiStats.map((api) => (
-            <div key={api.endpoint} className={styles.apiItem}>
-              <div className={styles.apiHeader} onClick={() => toggleExpand(api.endpoint)}>
-                <div className={styles.apiInfo}>
-                  <span className={styles.apiEndpoint}>{api.endpoint}</span>
-                  <div className={styles.apiStats}>
-                    <span className={styles.apiBadge}>
-                      <span className={styles.requestCountCell}>
-                        <span>
-                          {t('usage_stats.requests_count')}: {api.totalRequests.toLocaleString()}
-                        </span>
-                        <span className={styles.requestBreakdown}>
-                          (<span className={styles.statSuccess}>{api.successCount.toLocaleString()}</span>{' '}
-                          <span className={styles.statFailure}>{api.failureCount.toLocaleString()}</span>)
-                        </span>
-                      </span>
-                    </span>
-                    <span className={styles.apiBadge}>
-                      {t('usage_stats.tokens_count')}: {formatTokensInMillions(api.totalTokens)}
-                    </span>
-                    {hasPrices && api.totalCost > 0 && (
-                      <span className={styles.apiBadge}>
-                        {t('usage_stats.total_cost')}: {formatUsd(api.totalCost)}
+      ) : sorted.length > 0 ? (
+        <>
+          <div className={styles.apiSortBar}>
+            {([
+              ['endpoint', 'usage_stats.api_endpoint'],
+              ['requests', 'usage_stats.requests_count'],
+              ['tokens', 'usage_stats.tokens_count'],
+              ...(hasPrices ? [['cost', 'usage_stats.total_cost']] : []),
+            ] as [ApiSortKey, string][]).map(([key, labelKey]) => (
+              <button
+                key={key}
+                type="button"
+                aria-pressed={sortKey === key}
+                className={`${styles.apiSortBtn} ${sortKey === key ? styles.apiSortBtnActive : ''}`}
+                onClick={() => handleSort(key)}
+              >
+                {t(labelKey)}{arrow(key)}
+              </button>
+            ))}
+          </div>
+          <div className={styles.detailsScroll}>
+            <div className={styles.apiList}>
+              {sorted.map((api, index) => {
+                const isExpanded = expandedApis.has(api.endpoint);
+                const panelId = `api-models-${index}`;
+
+                return (
+                  <div key={api.endpoint} className={styles.apiItem}>
+                    <button
+                      type="button"
+                      className={styles.apiHeader}
+                      onClick={() => toggleExpand(api.endpoint)}
+                      aria-expanded={isExpanded}
+                      aria-controls={panelId}
+                    >
+                      <div className={styles.apiInfo}>
+                        <span className={styles.apiEndpoint}>{api.endpoint}</span>
+                        <div className={styles.apiStats}>
+                          <span className={styles.apiBadge}>
+                            <span className={styles.requestCountCell}>
+                              <span>
+                                {t('usage_stats.requests_count')}: {api.totalRequests.toLocaleString()}
+                              </span>
+                              <span className={styles.requestBreakdown}>
+                                (<span className={styles.statSuccess}>{api.successCount.toLocaleString()}</span>{' '}
+                                <span className={styles.statFailure}>{api.failureCount.toLocaleString()}</span>)
+                              </span>
+                            </span>
+                          </span>
+                          <span className={styles.apiBadge}>
+                            {t('usage_stats.tokens_count')}: {formatCompactNumber(api.totalTokens)}
+                          </span>
+                          {hasPrices && api.totalCost > 0 && (
+                            <span className={styles.apiBadge}>
+                              {t('usage_stats.total_cost')}: {formatUsd(api.totalCost)}
+                            </span>
+                          )}
+                        </div>
+                      </div>
+                      <span className={styles.expandIcon}>
+                        {isExpanded ? '▼' : '▶'}
                       </span>
+                    </button>
+                    {isExpanded && (
+                      <div id={panelId} className={styles.apiModels}>
+                        {Object.entries(api.models).map(([model, stats]) => (
+                          <div key={model} className={styles.modelRow}>
+                            <span className={styles.modelName}>{model}</span>
+                            <span className={styles.modelStat}>
+                              <span className={styles.requestCountCell}>
+                                <span>{stats.requests.toLocaleString()}</span>
+                                <span className={styles.requestBreakdown}>
+                                  (<span className={styles.statSuccess}>{stats.successCount.toLocaleString()}</span>{' '}
+                                  <span className={styles.statFailure}>{stats.failureCount.toLocaleString()}</span>)
+                                </span>
+                              </span>
+                            </span>
+                            <span className={styles.modelStat}>{formatCompactNumber(stats.tokens)}</span>
+                          </div>
+                        ))}
+                      </div>
                     )}
                   </div>
-                </div>
-                <span className={styles.expandIcon}>
-                  {expandedApis.has(api.endpoint) ? '▼' : '▶'}
-                </span>
-              </div>
-              {expandedApis.has(api.endpoint) && (
-                <div className={styles.apiModels}>
-                  {Object.entries(api.models).map(([model, stats]) => (
-                    <div key={model} className={styles.modelRow}>
-                      <span className={styles.modelName}>{model}</span>
-                      <span className={styles.modelStat}>
-                        <span className={styles.requestCountCell}>
-                          <span>{stats.requests.toLocaleString()}</span>
-                          <span className={styles.requestBreakdown}>
-                            (<span className={styles.statSuccess}>{stats.successCount.toLocaleString()}</span>{' '}
-                            <span className={styles.statFailure}>{stats.failureCount.toLocaleString()}</span>)
-                          </span>
-                        </span>
-                      </span>
-                      <span className={styles.modelStat}>{formatTokensInMillions(stats.tokens)}</span>
-                    </div>
-                  ))}
-                </div>
-              )}
+                );
+              })}
             </div>
-          ))}
-        </div>
+          </div>
+        </>
       ) : (
         <div className={styles.hint}>{t('usage_stats.no_data')}</div>
       )}

src/components/usage/CostTrendChart.tsx

@@ -0,0 +1,144 @@
+import { useState, useMemo } from 'react';
+import { useTranslation } from 'react-i18next';
+import type { ScriptableContext } from 'chart.js';
+import { Line } from 'react-chartjs-2';
+import { Card } from '@/components/ui/Card';
+import { Button } from '@/components/ui/Button';
+import {
+  buildHourlyCostSeries,
+  buildDailyCostSeries,
+  formatUsd,
+  type ModelPrice
+} from '@/utils/usage';
+import { buildChartOptions, getHourChartMinWidth } from '@/utils/usage/chartConfig';
+import type { UsagePayload } from './hooks/useUsageData';
+import styles from '@/pages/UsagePage.module.scss';
+
+export interface CostTrendChartProps {
+  usage: UsagePayload | null;
+  loading: boolean;
+  isDark: boolean;
+  isMobile: boolean;
+  modelPrices: Record<string, ModelPrice>;
+  hourWindowHours?: number;
+}
+
+const COST_COLOR = '#f59e0b';
+const COST_BG = 'rgba(245, 158, 11, 0.15)';
+
+function buildGradient(ctx: ScriptableContext<'line'>) {
+  const chart = ctx.chart;
+  const area = chart.chartArea;
+  if (!area) return COST_BG;
+  const gradient = chart.ctx.createLinearGradient(0, area.top, 0, area.bottom);
+  gradient.addColorStop(0, 'rgba(245, 158, 11, 0.28)');
+  gradient.addColorStop(0.6, 'rgba(245, 158, 11, 0.12)');
+  gradient.addColorStop(1, 'rgba(245, 158, 11, 0.02)');
+  return gradient;
+}
+
+export function CostTrendChart({
+  usage,
+  loading,
+  isDark,
+  isMobile,
+  modelPrices,
+  hourWindowHours
+}: CostTrendChartProps) {
+  const { t } = useTranslation();
+  const [period, setPeriod] = useState<'hour' | 'day'>('hour');
+  const hasPrices = Object.keys(modelPrices).length > 0;
+
+  const { chartData, chartOptions, hasData } = useMemo(() => {
+    if (!hasPrices || !usage) {
+      return { chartData: { labels: [], datasets: [] }, chartOptions: {}, hasData: false };
+    }
+
+    const series =
+      period === 'hour'
+        ? buildHourlyCostSeries(usage, modelPrices, hourWindowHours)
+        : buildDailyCostSeries(usage, modelPrices);
+
+    const data = {
+      labels: series.labels,
+      datasets: [
+        {
+          label: t('usage_stats.total_cost'),
+          data: series.data,
+          borderColor: COST_COLOR,
+          backgroundColor: buildGradient,
+          pointBackgroundColor: COST_COLOR,
+          pointBorderColor: COST_COLOR,
+          fill: true,
+          tension: 0.35
+        }
+      ]
+    };
+
+    const baseOptions = buildChartOptions({ period, labels: series.labels, isDark, isMobile });
+    const options = {
+      ...baseOptions,
+      scales: {
+        ...baseOptions.scales,
+        y: {
+          ...baseOptions.scales?.y,
+          ticks: {
+            ...(baseOptions.scales?.y && 'ticks' in baseOptions.scales.y ? baseOptions.scales.y.ticks : {}),
+            callback: (value: string | number) => formatUsd(Number(value))
+          }
+        }
+      }
+    };
+
+    return { chartData: data, chartOptions: options, hasData: series.hasData };
+  }, [usage, period, isDark, isMobile, modelPrices, hasPrices, hourWindowHours, t]);
+
+  return (
+    <Card
+      title={t('usage_stats.cost_trend')}
+      extra={
+        <div className={styles.periodButtons}>
+          <Button
+            variant={period === 'hour' ? 'primary' : 'secondary'}
+            size="sm"
+            onClick={() => setPeriod('hour')}
+          >
+            {t('usage_stats.by_hour')}
+          </Button>
+          <Button
+            variant={period === 'day' ? 'primary' : 'secondary'}
+            size="sm"
+            onClick={() => setPeriod('day')}
+          >
+            {t('usage_stats.by_day')}
+          </Button>
+        </div>
+      }
+    >
+      {loading ? (
+        <div className={styles.hint}>{t('common.loading')}</div>
+      ) : !hasPrices ? (
+        <div className={styles.hint}>{t('usage_stats.cost_need_price')}</div>
+      ) : !hasData ? (
+        <div className={styles.hint}>{t('usage_stats.cost_no_data')}</div>
+      ) : (
+        <div className={styles.chartWrapper}>
+          <div className={styles.chartArea}>
+            <div className={styles.chartScroller}>
+              <div
+                className={styles.chartCanvas}
+                style={
+                  period === 'hour'
+                    ? { minWidth: getHourChartMinWidth(chartData.labels.length, isMobile) }
+                    : undefined
+                }
+              >
+                <Line data={chartData} options={chartOptions} />
+              </div>
+            </div>
+          </div>
+        </div>
+      )}
+    </Card>
+  );
+}

src/components/usage/CredentialStatsCard.tsx

@@ -0,0 +1,334 @@
+import { useMemo, useState, useEffect } from 'react';
+import { useTranslation } from 'react-i18next';
+import { Card } from '@/components/ui/Card';
+import {
+  computeKeyStats,
+  collectUsageDetails,
+  buildCandidateUsageSourceIds,
+  formatCompactNumber
+} from '@/utils/usage';
+import { authFilesApi } from '@/services/api/authFiles';
+import type { GeminiKeyConfig, ProviderKeyConfig, OpenAIProviderConfig } from '@/types';
+import type { AuthFileItem } from '@/types/authFile';
+import type { UsagePayload } from './hooks/useUsageData';
+import styles from '@/pages/UsagePage.module.scss';
+
+export interface CredentialStatsCardProps {
+  usage: UsagePayload | null;
+  loading: boolean;
+  geminiKeys: GeminiKeyConfig[];
+  claudeConfigs: ProviderKeyConfig[];
+  codexConfigs: ProviderKeyConfig[];
+  vertexConfigs: ProviderKeyConfig[];
+  openaiProviders: OpenAIProviderConfig[];
+}
+
+interface CredentialInfo {
+  name: string;
+  type: string;
+}
+
+interface CredentialRow {
+  key: string;
+  displayName: string;
+  type: string;
+  success: number;
+  failure: number;
+  total: number;
+  successRate: number;
+}
+
+interface CredentialBucket {
+  success: number;
+  failure: number;
+}
+
+function normalizeAuthIndexValue(value: unknown): string | null {
+  if (typeof value === 'number' && Number.isFinite(value)) {
+    return value.toString();
+  }
+  if (typeof value === 'string') {
+    const trimmed = value.trim();
+    return trimmed || null;
+  }
+  return null;
+}
+
+export function CredentialStatsCard({
+  usage,
+  loading,
+  geminiKeys,
+  claudeConfigs,
+  codexConfigs,
+  vertexConfigs,
+  openaiProviders,
+}: CredentialStatsCardProps) {
+  const { t } = useTranslation();
+  const [authFileMap, setAuthFileMap] = useState<Map<string, CredentialInfo>>(new Map());
+
+  // Fetch auth files for auth_index-based matching
+  useEffect(() => {
+    let cancelled = false;
+    authFilesApi
+      .list()
+      .then((res) => {
+        if (cancelled) return;
+        const files = Array.isArray(res) ? res : (res as { files?: AuthFileItem[] })?.files;
+        if (!Array.isArray(files)) return;
+        const map = new Map<string, CredentialInfo>();
+        files.forEach((file) => {
+          const rawAuthIndex = file['auth_index'] ?? file.authIndex;
+          const key = normalizeAuthIndexValue(rawAuthIndex);
+          if (key) {
+            map.set(key, {
+              name: file.name || key,
+              type: (file.type || file.provider || '').toString(),
+            });
+          }
+        });
+        setAuthFileMap(map);
+      })
+      .catch(() => {});
+    return () => { cancelled = true; };
+  }, []);
+
+  // Aggregate rows: all from bySource only (no separate byAuthIndex rows to avoid duplicates).
+  // Auth files are used purely for name resolution of unmatched source IDs.
+  const rows = useMemo((): CredentialRow[] => {
+    if (!usage) return [];
+    const { bySource } = computeKeyStats(usage);
+    const details = collectUsageDetails(usage);
+    const result: CredentialRow[] = [];
+    const consumedSourceIds = new Set<string>();
+    const authIndexToRowIndex = new Map<string, number>();
+    const sourceToAuthIndex = new Map<string, string>();
+    const fallbackByAuthIndex = new Map<string, CredentialBucket>();
+
+    const mergeBucketToRow = (index: number, bucket: CredentialBucket) => {
+      const target = result[index];
+      if (!target) return;
+      target.success += bucket.success;
+      target.failure += bucket.failure;
+      target.total = target.success + target.failure;
+      target.successRate = target.total > 0 ? (target.success / target.total) * 100 : 100;
+    };
+
+    // Aggregate all candidate source IDs for one provider config into a single row
+    const addConfigRow = (
+      apiKey: string,
+      prefix: string | undefined,
+      name: string,
+      type: string,
+      rowKey: string,
+    ) => {
+      const candidates = buildCandidateUsageSourceIds({ apiKey, prefix });
+      let success = 0;
+      let failure = 0;
+      candidates.forEach((id) => {
+        const bucket = bySource[id];
+        if (bucket) {
+          success += bucket.success;
+          failure += bucket.failure;
+          consumedSourceIds.add(id);
+        }
+      });
+      const total = success + failure;
+      if (total > 0) {
+        result.push({
+          key: rowKey,
+          displayName: name,
+          type,
+          success,
+          failure,
+          total,
+          successRate: (success / total) * 100,
+        });
+      }
+    };
+
+    // Provider rows — one row per config, stats merged across all its candidate source IDs
+    geminiKeys.forEach((c, i) =>
+      addConfigRow(c.apiKey, c.prefix, c.prefix?.trim() || `Gemini #${i + 1}`, 'gemini', `gemini:${i}`));
+    claudeConfigs.forEach((c, i) =>
+      addConfigRow(c.apiKey, c.prefix, c.prefix?.trim() || `Claude #${i + 1}`, 'claude', `claude:${i}`));
+    codexConfigs.forEach((c, i) =>
+      addConfigRow(c.apiKey, c.prefix, c.prefix?.trim() || `Codex #${i + 1}`, 'codex', `codex:${i}`));
+    vertexConfigs.forEach((c, i) =>
+      addConfigRow(c.apiKey, c.prefix, c.prefix?.trim() || `Vertex #${i + 1}`, 'vertex', `vertex:${i}`));
+    // OpenAI compatibility providers — one row per provider, merged across all apiKey entries (prefix counted once).
+    openaiProviders.forEach((provider, providerIndex) => {
+      const prefix = provider.prefix;
+      const displayName = prefix?.trim() || provider.name || `OpenAI #${providerIndex + 1}`;
+
+      const candidates = new Set<string>();
+      buildCandidateUsageSourceIds({ prefix }).forEach((id) => candidates.add(id));
+      (provider.apiKeyEntries || []).forEach((entry) => {
+        buildCandidateUsageSourceIds({ apiKey: entry.apiKey }).forEach((id) => candidates.add(id));
+      });
+
+      let success = 0;
+      let failure = 0;
+      candidates.forEach((id) => {
+        const bucket = bySource[id];
+        if (bucket) {
+          success += bucket.success;
+          failure += bucket.failure;
+          consumedSourceIds.add(id);
+        }
+      });
+
+      const total = success + failure;
+      if (total > 0) {
+        result.push({
+          key: `openai:${providerIndex}`,
+          displayName,
+          type: 'openai',
+          success,
+          failure,
+          total,
+          successRate: (success / total) * 100,
+        });
+      }
+    });
+
+    // Build source → auth file name mapping for remaining unmatched entries.
+    // Also collect fallback stats for details without source but with auth_index.
+    const sourceToAuthFile = new Map<string, CredentialInfo>();
+    details.forEach((d) => {
+      const authIdx = normalizeAuthIndexValue(d.auth_index);
+      if (!d.source) {
+        if (!authIdx) return;
+        const fallback = fallbackByAuthIndex.get(authIdx) ?? { success: 0, failure: 0 };
+        if (d.failed === true) {
+          fallback.failure += 1;
+        } else {
+          fallback.success += 1;
+        }
+        fallbackByAuthIndex.set(authIdx, fallback);
+        return;
+      }
+
+      if (!authIdx || consumedSourceIds.has(d.source)) return;
+      if (!sourceToAuthIndex.has(d.source)) {
+        sourceToAuthIndex.set(d.source, authIdx);
+      }
+      if (!sourceToAuthFile.has(d.source)) {
+        const mapped = authFileMap.get(authIdx);
+        if (mapped) sourceToAuthFile.set(d.source, mapped);
+      }
+    });
+
+    // Remaining unmatched bySource entries — resolve name from auth files if possible
+    Object.entries(bySource).forEach(([key, bucket]) => {
+      if (consumedSourceIds.has(key)) return;
+      const total = bucket.success + bucket.failure;
+      const authFile = sourceToAuthFile.get(key);
+      const row = {
+        key,
+        displayName: authFile?.name || (key.startsWith('t:') ? key.slice(2) : key),
+        type: authFile?.type || '',
+        success: bucket.success,
+        failure: bucket.failure,
+        total,
+        successRate: total > 0 ? (bucket.success / total) * 100 : 100,
+      };
+      const rowIndex = result.push(row) - 1;
+      const authIdx = sourceToAuthIndex.get(key);
+      if (authIdx && !authIndexToRowIndex.has(authIdx)) {
+        authIndexToRowIndex.set(authIdx, rowIndex);
+      }
+    });
+
+    // Include requests that have auth_index but missing source.
+    fallbackByAuthIndex.forEach((bucket, authIdx) => {
+      if (bucket.success + bucket.failure === 0) return;
+
+      const mapped = authFileMap.get(authIdx);
+      let targetRowIndex = authIndexToRowIndex.get(authIdx);
+      if (targetRowIndex === undefined && mapped) {
+        const matchedIndex = result.findIndex(
+          (row) => row.displayName === mapped.name && row.type === mapped.type
+        );
+        if (matchedIndex >= 0) {
+          targetRowIndex = matchedIndex;
+          authIndexToRowIndex.set(authIdx, matchedIndex);
+        }
+      }
+
+      if (targetRowIndex !== undefined) {
+        mergeBucketToRow(targetRowIndex, bucket);
+        return;
+      }
+
+      const total = bucket.success + bucket.failure;
+      const rowIndex = result.push({
+        key: `auth:${authIdx}`,
+        displayName: mapped?.name || authIdx,
+        type: mapped?.type || '',
+        success: bucket.success,
+        failure: bucket.failure,
+        total,
+        successRate: (bucket.success / total) * 100
+      }) - 1;
+      authIndexToRowIndex.set(authIdx, rowIndex);
+    });
+
+    return result.sort((a, b) => b.total - a.total);
+  }, [usage, geminiKeys, claudeConfigs, codexConfigs, vertexConfigs, openaiProviders, authFileMap]);
+
+  return (
+    <Card title={t('usage_stats.credential_stats')}>
+      {loading ? (
+        <div className={styles.hint}>{t('common.loading')}</div>
+      ) : rows.length > 0 ? (
+        <div className={styles.tableWrapper}>
+          <table className={styles.table}>
+            <thead>
+              <tr>
+                <th>{t('usage_stats.credential_name')}</th>
+                <th>{t('usage_stats.requests_count')}</th>
+                <th>{t('usage_stats.success_rate')}</th>
+              </tr>
+            </thead>
+            <tbody>
+              {rows.map((row) => (
+                <tr key={row.key}>
+                  <td className={styles.modelCell}>
+                    <span>{row.displayName}</span>
+                    {row.type && (
+                      <span className={styles.credentialType}>{row.type}</span>
+                    )}
+                  </td>
+                  <td>
+                    <span className={styles.requestCountCell}>
+                      <span>{formatCompactNumber(row.total)}</span>
+                      <span className={styles.requestBreakdown}>
+                        (<span className={styles.statSuccess}>{row.success.toLocaleString()}</span>{' '}
+                        <span className={styles.statFailure}>{row.failure.toLocaleString()}</span>)
+                      </span>
+                    </span>
+                  </td>
+                  <td>
+                    <span
+                      className={
+                        row.successRate >= 95
+                          ? styles.statSuccess
+                          : row.successRate >= 80
+                            ? styles.statNeutral
+                            : styles.statFailure
+                      }
+                    >
+                      {row.successRate.toFixed(1)}%
+                    </span>
+                  </td>
+                </tr>
+              ))}
+            </tbody>
+          </table>
+        </div>
+      ) : (
+        <div className={styles.hint}>{t('usage_stats.no_data')}</div>
+      )}
+    </Card>
+  );
+}

src/components/usage/ModelStatsCard.tsx

@@ -1,6 +1,7 @@
+import { useState, useMemo } from 'react';
 import { useTranslation } from 'react-i18next';
 import { Card } from '@/components/ui/Card';
-import { formatTokensInMillions, formatUsd } from '@/utils/usage';
+import { formatCompactNumber, formatUsd } from '@/utils/usage';
 import styles from '@/pages/UsagePage.module.scss';
 
 export interface ModelStat {
@@ -18,43 +19,137 @@ export interface ModelStatsCardProps {
   hasPrices: boolean;
 }
 
+type SortKey = 'model' | 'requests' | 'tokens' | 'cost' | 'successRate';
+type SortDir = 'asc' | 'desc';
+
+interface ModelStatWithRate extends ModelStat {
+  successRate: number;
+}
+
 export function ModelStatsCard({ modelStats, loading, hasPrices }: ModelStatsCardProps) {
   const { t } = useTranslation();
+  const [sortKey, setSortKey] = useState<SortKey>('requests');
+  const [sortDir, setSortDir] = useState<SortDir>('desc');
+
+  const handleSort = (key: SortKey) => {
+    if (sortKey === key) {
+      setSortDir((d) => (d === 'asc' ? 'desc' : 'asc'));
+    } else {
+      setSortKey(key);
+      setSortDir(key === 'model' ? 'asc' : 'desc');
+    }
+  };
+
+  const sorted = useMemo((): ModelStatWithRate[] => {
+    const list: ModelStatWithRate[] = modelStats.map((s) => ({
+      ...s,
+      successRate: s.requests > 0 ? (s.successCount / s.requests) * 100 : 100,
+    }));
+    const dir = sortDir === 'asc' ? 1 : -1;
+    list.sort((a, b) => {
+      if (sortKey === 'model') return dir * a.model.localeCompare(b.model);
+      return dir * ((a[sortKey] as number) - (b[sortKey] as number));
+    });
+    return list;
+  }, [modelStats, sortKey, sortDir]);
+
+  const arrow = (key: SortKey) =>
+    sortKey === key ? (sortDir === 'asc' ? ' ▲' : ' ▼') : '';
+  const ariaSort = (key: SortKey): 'none' | 'ascending' | 'descending' =>
+    sortKey === key ? (sortDir === 'asc' ? 'ascending' : 'descending') : 'none';
 
   return (
-    <Card title={t('usage_stats.models')}>
+    <Card title={t('usage_stats.models')} className={styles.detailsFixedCard}>
       {loading ? (
         <div className={styles.hint}>{t('common.loading')}</div>
-      ) : modelStats.length > 0 ? (
-        <div className={styles.tableWrapper}>
-          <table className={styles.table}>
-            <thead>
-              <tr>
-                <th>{t('usage_stats.model_name')}</th>
-                <th>{t('usage_stats.requests_count')}</th>
-                <th>{t('usage_stats.tokens_count')}</th>
-                {hasPrices && <th>{t('usage_stats.total_cost')}</th>}
-              </tr>
-            </thead>
-            <tbody>
-              {modelStats.map((stat) => (
-                <tr key={stat.model}>
-                  <td className={styles.modelCell}>{stat.model}</td>
-                  <td>
-                    <span className={styles.requestCountCell}>
-                      <span>{stat.requests.toLocaleString()}</span>
-                      <span className={styles.requestBreakdown}>
-                        (<span className={styles.statSuccess}>{stat.successCount.toLocaleString()}</span>{' '}
-                        <span className={styles.statFailure}>{stat.failureCount.toLocaleString()}</span>)
-                      </span>
-                    </span>
-                  </td>
-                  <td>{formatTokensInMillions(stat.tokens)}</td>
-                  {hasPrices && <td>{stat.cost > 0 ? formatUsd(stat.cost) : '--'}</td>}
+      ) : sorted.length > 0 ? (
+        <div className={styles.detailsScroll}>
+          <div className={styles.tableWrapper}>
+            <table className={styles.table}>
+              <thead>
+                <tr>
+                  <th className={styles.sortableHeader} aria-sort={ariaSort('model')}>
+                    <button
+                      type="button"
+                      className={styles.sortHeaderButton}
+                      onClick={() => handleSort('model')}
+                    >
+                      {t('usage_stats.model_name')}{arrow('model')}
+                    </button>
+                  </th>
+                  <th className={styles.sortableHeader} aria-sort={ariaSort('requests')}>
+                    <button
+                      type="button"
+                      className={styles.sortHeaderButton}
+                      onClick={() => handleSort('requests')}
+                    >
+                      {t('usage_stats.requests_count')}{arrow('requests')}
+                    </button>
+                  </th>
+                  <th className={styles.sortableHeader} aria-sort={ariaSort('tokens')}>
+                    <button
+                      type="button"
+                      className={styles.sortHeaderButton}
+                      onClick={() => handleSort('tokens')}
+                    >
+                      {t('usage_stats.tokens_count')}{arrow('tokens')}
+                    </button>
+                  </th>
+                  <th className={styles.sortableHeader} aria-sort={ariaSort('successRate')}>
+                    <button
+                      type="button"
+                      className={styles.sortHeaderButton}
+                      onClick={() => handleSort('successRate')}
+                    >
+                      {t('usage_stats.success_rate')}{arrow('successRate')}
+                    </button>
+                  </th>
+                  {hasPrices && (
+                    <th className={styles.sortableHeader} aria-sort={ariaSort('cost')}>
+                      <button
+                        type="button"
+                        className={styles.sortHeaderButton}
+                        onClick={() => handleSort('cost')}
+                      >
+                        {t('usage_stats.total_cost')}{arrow('cost')}
+                      </button>
+                    </th>
+                  )}
                 </tr>
-              ))}
-            </tbody>
-          </table>
+              </thead>
+              <tbody>
+                {sorted.map((stat) => (
+                  <tr key={stat.model}>
+                    <td className={styles.modelCell}>{stat.model}</td>
+                    <td>
+                      <span className={styles.requestCountCell}>
+                        <span>{stat.requests.toLocaleString()}</span>
+                        <span className={styles.requestBreakdown}>
+                          (<span className={styles.statSuccess}>{stat.successCount.toLocaleString()}</span>{' '}
+                          <span className={styles.statFailure}>{stat.failureCount.toLocaleString()}</span>)
+                        </span>
+                      </span>
+                    </td>
+                    <td>{formatCompactNumber(stat.tokens)}</td>
+                    <td>
+                      <span
+                        className={
+                          stat.successRate >= 95
+                            ? styles.statSuccess
+                            : stat.successRate >= 80
+                              ? styles.statNeutral
+                              : styles.statFailure
+                        }
+                      >
+                        {stat.successRate.toFixed(1)}%
+                      </span>
+                    </td>
+                    {hasPrices && <td>{stat.cost > 0 ? formatUsd(stat.cost) : '--'}</td>}
+                  </tr>
+                ))}
+              </tbody>
+            </table>
+          </div>
         </div>
       ) : (
         <div className={styles.hint}>{t('usage_stats.no_data')}</div>

src/components/usage/StatCards.tsx

@@ -3,7 +3,7 @@ import { useTranslation } from 'react-i18next';
 import { Line } from 'react-chartjs-2';
 import { IconDiamond, IconDollarSign, IconSatellite, IconTimer, IconTrendingUp } from '@/components/ui/icons';
 import {
-  formatTokensInMillions,
+  formatCompactNumber,
   formatPerMinuteValue,
   formatUsd,
   calculateTokenBreakdown,
@@ -81,14 +81,14 @@ export function StatCards({ usage, loading, modelPrices, sparklines }: StatCards
       accent: '#8b5cf6',
       accentSoft: 'rgba(139, 92, 246, 0.18)',
       accentBorder: 'rgba(139, 92, 246, 0.35)',
-      value: loading ? '-' : formatTokensInMillions(usage?.total_tokens ?? 0),
+      value: loading ? '-' : formatCompactNumber(usage?.total_tokens ?? 0),
       meta: (
         <>
           <span className={styles.statMetaItem}>
-            {t('usage_stats.cached_tokens')}: {loading ? '-' : formatTokensInMillions(tokenBreakdown.cachedTokens)}
+            {t('usage_stats.cached_tokens')}: {loading ? '-' : formatCompactNumber(tokenBreakdown.cachedTokens)}
           </span>
           <span className={styles.statMetaItem}>
-            {t('usage_stats.reasoning_tokens')}: {loading ? '-' : formatTokensInMillions(tokenBreakdown.reasoningTokens)}
+            {t('usage_stats.reasoning_tokens')}: {loading ? '-' : formatCompactNumber(tokenBreakdown.reasoningTokens)}
           </span>
         </>
       ),
@@ -119,7 +119,7 @@ export function StatCards({ usage, loading, modelPrices, sparklines }: StatCards
       value: loading ? '-' : formatPerMinuteValue(rateStats.tpm),
       meta: (
         <span className={styles.statMetaItem}>
-          {t('usage_stats.total_tokens')}: {loading ? '-' : formatTokensInMillions(rateStats.tokenCount)}
+          {t('usage_stats.total_tokens')}: {loading ? '-' : formatCompactNumber(rateStats.tokenCount)}
         </span>
       ),
       trend: sparklines.tpm
@@ -135,7 +135,7 @@ export function StatCards({ usage, loading, modelPrices, sparklines }: StatCards
       meta: (
         <>
           <span className={styles.statMetaItem}>
-            {t('usage_stats.total_tokens')}: {loading ? '-' : formatTokensInMillions(usage?.total_tokens ?? 0)}
+            {t('usage_stats.total_tokens')}: {loading ? '-' : formatCompactNumber(usage?.total_tokens ?? 0)}
           </span>
           {!hasPrices && (
             <span className={`${styles.statMetaItem} ${styles.statSubtle}`}>

src/components/usage/TokenBreakdownChart.tsx

@@ -0,0 +1,145 @@
+import { useState, useMemo } from 'react';
+import { useTranslation } from 'react-i18next';
+import { Line } from 'react-chartjs-2';
+import { Card } from '@/components/ui/Card';
+import { Button } from '@/components/ui/Button';
+import {
+  buildHourlyTokenBreakdown,
+  buildDailyTokenBreakdown,
+  type TokenCategory
+} from '@/utils/usage';
+import { buildChartOptions, getHourChartMinWidth } from '@/utils/usage/chartConfig';
+import type { UsagePayload } from './hooks/useUsageData';
+import styles from '@/pages/UsagePage.module.scss';
+
+const TOKEN_COLORS: Record<TokenCategory, { border: string; bg: string }> = {
+  input: { border: '#3b82f6', bg: 'rgba(59, 130, 246, 0.25)' },
+  output: { border: '#22c55e', bg: 'rgba(34, 197, 94, 0.25)' },
+  cached: { border: '#f59e0b', bg: 'rgba(245, 158, 11, 0.25)' },
+  reasoning: { border: '#8b5cf6', bg: 'rgba(139, 92, 246, 0.25)' }
+};
+
+const CATEGORIES: TokenCategory[] = ['input', 'output', 'cached', 'reasoning'];
+
+export interface TokenBreakdownChartProps {
+  usage: UsagePayload | null;
+  loading: boolean;
+  isDark: boolean;
+  isMobile: boolean;
+  hourWindowHours?: number;
+}
+
+export function TokenBreakdownChart({
+  usage,
+  loading,
+  isDark,
+  isMobile,
+  hourWindowHours
+}: TokenBreakdownChartProps) {
+  const { t } = useTranslation();
+  const [period, setPeriod] = useState<'hour' | 'day'>('hour');
+
+  const { chartData, chartOptions } = useMemo(() => {
+    const series =
+      period === 'hour'
+        ? buildHourlyTokenBreakdown(usage, hourWindowHours)
+        : buildDailyTokenBreakdown(usage);
+    const categoryLabels: Record<TokenCategory, string> = {
+      input: t('usage_stats.input_tokens'),
+      output: t('usage_stats.output_tokens'),
+      cached: t('usage_stats.cached_tokens'),
+      reasoning: t('usage_stats.reasoning_tokens')
+    };
+
+    const data = {
+      labels: series.labels,
+      datasets: CATEGORIES.map((cat) => ({
+        label: categoryLabels[cat],
+        data: series.dataByCategory[cat],
+        borderColor: TOKEN_COLORS[cat].border,
+        backgroundColor: TOKEN_COLORS[cat].bg,
+        pointBackgroundColor: TOKEN_COLORS[cat].border,
+        pointBorderColor: TOKEN_COLORS[cat].border,
+        fill: true,
+        tension: 0.35
+      }))
+    };
+
+    const baseOptions = buildChartOptions({ period, labels: series.labels, isDark, isMobile });
+    const options = {
+      ...baseOptions,
+      scales: {
+        ...baseOptions.scales,
+        y: {
+          ...baseOptions.scales?.y,
+          stacked: true
+        },
+        x: {
+          ...baseOptions.scales?.x,
+          stacked: true
+        }
+      }
+    };
+
+    return { chartData: data, chartOptions: options };
+  }, [usage, period, isDark, isMobile, hourWindowHours, t]);
+
+  return (
+    <Card
+      title={t('usage_stats.token_breakdown')}
+      extra={
+        <div className={styles.periodButtons}>
+          <Button
+            variant={period === 'hour' ? 'primary' : 'secondary'}
+            size="sm"
+            onClick={() => setPeriod('hour')}
+          >
+            {t('usage_stats.by_hour')}
+          </Button>
+          <Button
+            variant={period === 'day' ? 'primary' : 'secondary'}
+            size="sm"
+            onClick={() => setPeriod('day')}
+          >
+            {t('usage_stats.by_day')}
+          </Button>
+        </div>
+      }
+    >
+      {loading ? (
+        <div className={styles.hint}>{t('common.loading')}</div>
+      ) : chartData.labels.length > 0 ? (
+        <div className={styles.chartWrapper}>
+          <div className={styles.chartLegend} aria-label="Chart legend">
+            {chartData.datasets.map((dataset, index) => (
+              <div
+                key={`${dataset.label}-${index}`}
+                className={styles.legendItem}
+                title={dataset.label}
+              >
+                <span className={styles.legendDot} style={{ backgroundColor: dataset.borderColor }} />
+                <span className={styles.legendLabel}>{dataset.label}</span>
+              </div>
+            ))}
+          </div>
+          <div className={styles.chartArea}>
+            <div className={styles.chartScroller}>
+              <div
+                className={styles.chartCanvas}
+                style={
+                  period === 'hour'
+                    ? { minWidth: getHourChartMinWidth(chartData.labels.length, isMobile) }
+                    : undefined
+                }
+              >
+                <Line data={chartData} options={chartOptions} />
+              </div>
+            </div>
+          </div>
+        </div>
+      ) : (
+        <div className={styles.hint}>{t('usage_stats.no_data')}</div>
+      )}
+    </Card>
+  );
+}

src/components/usage/hooks/useUsageData.ts

@@ -17,6 +17,7 @@ export interface UseUsageDataReturn {
   usage: UsagePayload | null;
   loading: boolean;
   error: string;
+  lastRefreshedAt: Date | null;
   modelPrices: Record<string, ModelPrice>;
   setModelPrices: (prices: Record<string, ModelPrice>) => void;
   loadUsage: () => Promise<void>;
@@ -38,6 +39,7 @@ export function useUsageData(): UseUsageDataReturn {
   const [modelPrices, setModelPrices] = useState<Record<string, ModelPrice>>({});
   const [exporting, setExporting] = useState(false);
   const [importing, setImporting] = useState(false);
+  const [lastRefreshedAt, setLastRefreshedAt] = useState<Date | null>(null);
   const importInputRef = useRef<HTMLInputElement | null>(null);
 
   const loadUsage = useCallback(async () => {
@@ -47,6 +49,7 @@ export function useUsageData(): UseUsageDataReturn {
       const data = await usageApi.getUsage();
       const payload = (data?.usage ?? data) as unknown;
       setUsage(payload && typeof payload === 'object' ? (payload as UsagePayload) : null);
+      setLastRefreshedAt(new Date());
     } catch (err: unknown) {
       const message = err instanceof Error ? err.message : t('usage_stats.loading_error');
       setError(message);
@@ -140,6 +143,7 @@ export function useUsageData(): UseUsageDataReturn {
     usage,
     loading,
     error,
+    lastRefreshedAt,
     modelPrices,
     setModelPrices: handleSetModelPrices,
     loadUsage,

src/components/usage/index.ts

@@ -26,3 +26,12 @@ export type { ModelStatsCardProps, ModelStat } from './ModelStatsCard';
 
 export { PriceSettingsCard } from './PriceSettingsCard';
 export type { PriceSettingsCardProps } from './PriceSettingsCard';
+
+export { CredentialStatsCard } from './CredentialStatsCard';
+export type { CredentialStatsCardProps } from './CredentialStatsCard';
+
+export { TokenBreakdownChart } from './TokenBreakdownChart';
+export type { TokenBreakdownChartProps } from './TokenBreakdownChart';
+
+export { CostTrendChart } from './CostTrendChart';
+export type { CostTrendChartProps } from './CostTrendChart';

src/i18n/locales/en.json

@@ -419,15 +419,25 @@
     "status_toggle_label": "Enabled",
     "status_enabled_success": "\"{{name}}\" enabled",
     "status_disabled_success": "\"{{name}}\" disabled",
-    "prefix_proxy_button": "Edit prefix/proxy_url",
-    "prefix_proxy_loading": "Loading credential...",
-    "prefix_proxy_source_label": "Credential JSON",
-    "prefix_label": "prefix",
-    "proxy_url_label": "proxy_url",
+    "prefix_proxy_button": "Edit Auth Fields",
+    "auth_field_editor_title": "Edit Auth Fields - {{name}}",
+    "prefix_proxy_loading": "Loading auth file...",
+    "prefix_proxy_source_label": "Auth file JSON (preview)",
+    "prefix_label": "Prefix (prefix)",
+    "proxy_url_label": "Proxy URL (proxy_url)",
     "prefix_placeholder": "",
     "proxy_url_placeholder": "socks5://username:password@proxy_ip:port/",
-    "prefix_proxy_invalid_json": "This credential is not a JSON object and cannot be edited.",
-    "prefix_proxy_saved_success": "Updated \"{{name}}\" successfully",
+    "priority_label": "Priority (priority)",
+    "priority_placeholder": "e.g. 10 or -1",
+    "priority_hint": "Integers only. Invalid values are ignored. Larger value means higher priority.",
+    "excluded_models_label": "Excluded models (excluded_models)",
+    "excluded_models_placeholder": "Comma or newline separated, e.g. model-a, gpt-5-*, *-preview",
+    "excluded_models_hint": "Saved as an array and normalized by trim/lowercase/dedup/sort.",
+    "disable_cooling_label": "Disable cooling (disable_cooling)",
+    "disable_cooling_placeholder": "e.g. true / false / 1 / 0",
+    "disable_cooling_hint": "Supports booleans, numeric 0/non-0, and strings like true/false/1/0; unparseable values are ignored.",
+    "prefix_proxy_invalid_json": "This auth file is not a JSON object, so fields cannot be edited.",
+    "prefix_proxy_saved_success": "Updated auth file \"{{name}}\" successfully",
     "quota_refresh_success": "Quota refreshed for \"{{name}}\"",
     "quota_refresh_failed": "Failed to refresh quota for \"{{name}}\": {{message}}"
   },
@@ -802,7 +812,13 @@
     "cost_axis_label": "Cost ($)",
     "cost_need_price": "Set a model price to view cost stats",
     "cost_need_usage": "No usage data available to calculate cost",
-    "cost_no_data": "No cost data yet"
+    "cost_no_data": "No cost data yet",
+    "credential_stats": "Credential Statistics",
+    "credential_name": "Credential",
+    "token_breakdown": "Token Type Breakdown",
+    "input_tokens": "Input Tokens",
+    "output_tokens": "Output Tokens",
+    "last_updated": "Updated"
   },
   "stats": {
     "success": "Success",

src/i18n/locales/ru.json

@@ -419,15 +419,25 @@
     "status_toggle_label": "Включено",
     "status_enabled_success": "\"{{name}}\" включён",
     "status_disabled_success": "\"{{name}}\" отключён",
-    "prefix_proxy_button": "Изменить prefix/proxy_url",
-    "prefix_proxy_loading": "Загрузка учётных данных...",
-    "prefix_proxy_source_label": "JSON учётных данных",
-    "prefix_label": "prefix",
-    "proxy_url_label": "proxy_url",
+    "prefix_proxy_button": "Редактировать поля файла авторизации",
+    "auth_field_editor_title": "Редактировать поля файла авторизации - {{name}}",
+    "prefix_proxy_loading": "Загрузка файла авторизации...",
+    "prefix_proxy_source_label": "JSON файла авторизации (предпросмотр)",
+    "prefix_label": "Префикс (prefix)",
+    "proxy_url_label": "URL прокси (proxy_url)",
     "prefix_placeholder": "",
     "proxy_url_placeholder": "socks5://username:password@proxy_ip:port/",
-    "prefix_proxy_invalid_json": "Эти учётные данные не являются JSON-объектом и не могут быть изменены.",
-    "prefix_proxy_saved_success": "\"{{name}}\" успешно обновлён",
+    "priority_label": "Приоритет (priority)",
+    "priority_placeholder": "например: 10 или -1",
+    "priority_hint": "Только целые числа. Некорректные значения игнорируются. Чем больше число, тем выше приоритет.",
+    "excluded_models_label": "Исключённые модели (excluded_models)",
+    "excluded_models_placeholder": "Через запятую или с новой строки, например: model-a, gpt-5-*, *-preview",
+    "excluded_models_hint": "Сохраняется как массив; значения trim/нижний регистр/без дублей/с сортировкой.",
+    "disable_cooling_label": "Отключение охлаждения (disable_cooling)",
+    "disable_cooling_placeholder": "например: true / false / 1 / 0",
+    "disable_cooling_hint": "Поддерживает boolean, числа 0/не 0 и строки true/false/1/0; непарсируемые значения игнорируются.",
+    "prefix_proxy_invalid_json": "Этот файл авторизации не является JSON-объектом, поэтому поля нельзя редактировать.",
+    "prefix_proxy_saved_success": "Файл авторизации \"{{name}}\" успешно обновлён",
     "card_tools_title": "Инструменты",
     "quota_refresh_single": "Обновить квоту",
     "quota_refresh_hint": "Обновить квоту только для этих учётных данных",
@@ -805,7 +815,13 @@
     "cost_axis_label": "Стоимость ($)",
     "cost_need_price": "Задайте стоимость модели, чтобы увидеть статистику затрат",
     "cost_need_usage": "Нет данных использования для расчёта стоимости",
-    "cost_no_data": "Данных о стоимости ещё нет"
+    "cost_no_data": "Данных о стоимости ещё нет",
+    "credential_stats": "Статистика учётных данных",
+    "credential_name": "Учётные данные",
+    "token_breakdown": "Распределение типов токенов",
+    "input_tokens": "Входные токены",
+    "output_tokens": "Выходные токены",
+    "last_updated": "Обновлено"
   },
   "stats": {
     "success": "Успех",

src/i18n/locales/zh-CN.json

@@ -419,15 +419,25 @@
     "status_toggle_label": "启用",
     "status_enabled_success": "已启用 \"{{name}}\"",
     "status_disabled_success": "已停用 \"{{name}}\"",
-    "prefix_proxy_button": "配置 prefix/proxy_url",
-    "prefix_proxy_loading": "正在加载凭证文件...",
-    "prefix_proxy_source_label": "凭证 JSON",
-    "prefix_label": "prefix",
-    "proxy_url_label": "proxy_url",
+    "prefix_proxy_button": "编辑认证文件字段",
+    "auth_field_editor_title": "编辑认证文件字段 - {{name}}",
+    "prefix_proxy_loading": "正在加载认证文件...",
+    "prefix_proxy_source_label": "认证文件 JSON（预览）",
+    "prefix_label": "前缀（prefix）",
+    "proxy_url_label": "代理 URL（proxy_url）",
     "prefix_placeholder": "",
     "proxy_url_placeholder": "socks5://username:password@proxy_ip:port/",
-    "prefix_proxy_invalid_json": "该凭证文件不是 JSON 对象，无法编辑。",
-    "prefix_proxy_saved_success": "已更新 \"{{name}}\"",
+    "priority_label": "优先级（priority）",
+    "priority_placeholder": "例如: 10 或 -1",
+    "priority_hint": "仅支持整数；非法值会被忽略。数值越大优先级越高。",
+    "excluded_models_label": "排除模型（excluded_models）",
+    "excluded_models_placeholder": "用逗号或换行分隔，例如: model-a, gpt-5-*, *-preview",
+    "excluded_models_hint": "保存为数组；会自动 trim、小写、去重并排序。",
+    "disable_cooling_label": "禁用冷却（disable_cooling）",
+    "disable_cooling_placeholder": "例如: true / false / 1 / 0",
+    "disable_cooling_hint": "支持布尔值、0/非0 数字或字符串 true/false/1/0；无法解析时忽略。",
+    "prefix_proxy_invalid_json": "该认证文件不是 JSON 对象，无法编辑字段。",
+    "prefix_proxy_saved_success": "已更新认证文件 \"{{name}}\"",
     "quota_refresh_success": "已刷新 \"{{name}}\" 的额度",
     "quota_refresh_failed": "刷新 \"{{name}}\" 的额度失败：{{message}}"
   },
@@ -802,7 +812,13 @@
     "cost_axis_label": "花费 ($)",
     "cost_need_price": "请先设置模型价格",
     "cost_need_usage": "暂无使用数据，无法计算花费",
-    "cost_no_data": "没有可计算的花费数据"
+    "cost_no_data": "没有可计算的花费数据",
+    "credential_stats": "凭证统计",
+    "credential_name": "凭证",
+    "token_breakdown": "Token 类型分布",
+    "input_tokens": "输入 Tokens",
+    "output_tokens": "输出 Tokens",
+    "last_updated": "更新于"
   },
   "stats": {
     "success": "成功",

src/pages/AuthFilesPage.module.scss

@@ -80,12 +80,13 @@
 
 .filterTag {
   display: inline-flex;
-  align-items: center;
+  align-items: baseline;
   gap: 8px;
   padding: 6px 14px;
   border-radius: 20px;
   font-size: 13px;
   font-weight: 500;
+  line-height: 1;
   border: 1px solid transparent;
   cursor: pointer;
   transition: all $transition-fast;
@@ -101,12 +102,19 @@
 }
 
 .filterTagLabel {
+  display: inline-flex;
+  align-items: baseline;
   white-space: nowrap;
 }
 
 .filterTagCount {
+  display: inline-flex;
+  align-items: baseline;
+  justify-content: flex-end;
+  min-width: 2ch;
   font-size: 12px;
   font-weight: 600;
+  font-variant-numeric: tabular-nums;
   opacity: 0.85;
 }
 

src/pages/AuthFilesPage.tsx

@@ -95,6 +95,9 @@ const MIN_CARD_PAGE_SIZE = 3;
 const MAX_CARD_PAGE_SIZE = 30;
 const MAX_AUTH_FILE_SIZE = 50 * 1024;
 const AUTH_FILES_UI_STATE_KEY = 'authFilesPage.uiState';
+const INTEGER_STRING_PATTERN = /^[+-]?\d+$/;
+const TRUTHY_TEXT_VALUES = new Set(['true', '1', 'yes', 'y', 'on']);
+const FALSY_TEXT_VALUES = new Set(['false', '0', 'no', 'n', 'off']);
 
 const clampCardPageSize = (value: number) =>
   Math.min(MAX_CARD_PAGE_SIZE, Math.max(MIN_CARD_PAGE_SIZE, Math.round(value)));
@@ -208,7 +211,54 @@ interface PrefixProxyEditorState {
   json: Record<string, unknown> | null;
   prefix: string;
   proxyUrl: string;
+  priority: string;
+  excludedModelsText: string;
+  disableCooling: string;
 }
+
+const parsePriorityValue = (value: unknown): number | undefined => {
+  if (typeof value === 'number') {
+    return Number.isInteger(value) ? value : undefined;
+  }
+
+  if (typeof value !== 'string') return undefined;
+  const trimmed = value.trim();
+  if (!trimmed || !INTEGER_STRING_PATTERN.test(trimmed)) return undefined;
+  const parsed = Number.parseInt(trimmed, 10);
+  return Number.isSafeInteger(parsed) ? parsed : undefined;
+};
+
+const normalizeExcludedModels = (value: unknown): string[] => {
+  if (!Array.isArray(value)) return [];
+
+  const seen = new Set<string>();
+  const normalized: string[] = [];
+  value.forEach((entry) => {
+    const model = String(entry ?? '')
+      .trim()
+      .toLowerCase();
+    if (!model || seen.has(model)) return;
+    seen.add(model);
+    normalized.push(model);
+  });
+
+  return normalized.sort((a, b) => a.localeCompare(b));
+};
+
+const parseExcludedModelsText = (value: string): string[] =>
+  normalizeExcludedModels(value.split(/[\n,]+/));
+
+const parseDisableCoolingValue = (value: unknown): boolean | undefined => {
+  if (typeof value === 'boolean') return value;
+  if (typeof value === 'number' && Number.isFinite(value)) return value !== 0;
+  if (typeof value !== 'string') return undefined;
+
+  const normalized = value.trim().toLowerCase();
+  if (!normalized) return undefined;
+  if (TRUTHY_TEXT_VALUES.has(normalized)) return true;
+  if (FALSY_TEXT_VALUES.has(normalized)) return false;
+  return undefined;
+};
 // 标准化 auth_index 值（与 usage.ts 中的 normalizeAuthIndex 保持一致）
 function normalizeAuthIndexValue(value: unknown): string | null {
   if (typeof value === 'number' && Number.isFinite(value)) {
@@ -441,11 +491,36 @@ export function AuthFilesPage() {
     if ('proxy_url' in next || prefixProxyEditor.proxyUrl.trim()) {
       next.proxy_url = prefixProxyEditor.proxyUrl;
     }
+
+    const parsedPriority = parsePriorityValue(prefixProxyEditor.priority);
+    if (parsedPriority !== undefined) {
+      next.priority = parsedPriority;
+    } else if ('priority' in next) {
+      delete next.priority;
+    }
+
+    const excludedModels = parseExcludedModelsText(prefixProxyEditor.excludedModelsText);
+    if (excludedModels.length > 0) {
+      next.excluded_models = excludedModels;
+    } else if ('excluded_models' in next) {
+      delete next.excluded_models;
+    }
+
+    const parsedDisableCooling = parseDisableCoolingValue(prefixProxyEditor.disableCooling);
+    if (parsedDisableCooling !== undefined) {
+      next.disable_cooling = parsedDisableCooling;
+    } else if ('disable_cooling' in next) {
+      delete next.disable_cooling;
+    }
+
     return JSON.stringify(next);
   }, [
     prefixProxyEditor?.json,
     prefixProxyEditor?.prefix,
     prefixProxyEditor?.proxyUrl,
+    prefixProxyEditor?.priority,
+    prefixProxyEditor?.excludedModelsText,
+    prefixProxyEditor?.disableCooling,
     prefixProxyEditor?.rawText,
   ]);
 
@@ -857,6 +932,9 @@ export function AuthFilesPage() {
       json: null,
       prefix: '',
       proxyUrl: '',
+      priority: '',
+      excludedModelsText: '',
+      disableCooling: '',
     });
 
     try {
@@ -898,6 +976,9 @@ export function AuthFilesPage() {
       const originalText = JSON.stringify(json);
       const prefix = typeof json.prefix === 'string' ? json.prefix : '';
       const proxyUrl = typeof json.proxy_url === 'string' ? json.proxy_url : '';
+      const priority = parsePriorityValue(json.priority);
+      const excludedModels = normalizeExcludedModels(json.excluded_models);
+      const disableCooling = parseDisableCoolingValue(json.disable_cooling);
 
       setPrefixProxyEditor((prev) => {
         if (!prev || prev.fileName !== name) return prev;
@@ -909,6 +990,10 @@ export function AuthFilesPage() {
           json,
           prefix,
           proxyUrl,
+          priority: priority !== undefined ? String(priority) : '',
+          excludedModelsText: excludedModels.join('\n'),
+          disableCooling:
+            disableCooling === undefined ? '' : disableCooling ? 'true' : 'false',
           error: null,
         };
       });
@@ -922,11 +1007,17 @@ export function AuthFilesPage() {
     }
   };
 
-  const handlePrefixProxyChange = (field: 'prefix' | 'proxyUrl', value: string) => {
+  const handlePrefixProxyChange = (
+    field: 'prefix' | 'proxyUrl' | 'priority' | 'excludedModelsText' | 'disableCooling',
+    value: string
+  ) => {
     setPrefixProxyEditor((prev) => {
       if (!prev) return prev;
       if (field === 'prefix') return { ...prev, prefix: value };
-      return { ...prev, proxyUrl: value };
+      if (field === 'proxyUrl') return { ...prev, proxyUrl: value };
+      if (field === 'priority') return { ...prev, priority: value };
+      if (field === 'excludedModelsText') return { ...prev, excludedModelsText: value };
+      return { ...prev, disableCooling: value };
     });
   };
 
@@ -2171,7 +2262,7 @@ export function AuthFilesPage() {
         )}
       </Modal>
 
-      {/* prefix/proxy_url 编辑弹窗 */}
+      {/* 认证文件字段编辑弹窗 */}
       <Modal
         open={Boolean(prefixProxyEditor)}
         onClose={() => setPrefixProxyEditor(null)}
@@ -2179,7 +2270,7 @@ export function AuthFilesPage() {
         width={720}
         title={
           prefixProxyEditor?.fileName
-            ? `${t('auth_files.prefix_proxy_button')} - ${prefixProxyEditor.fileName}`
+            ? t('auth_files.auth_field_editor_title', { name: prefixProxyEditor.fileName })
             : t('auth_files.prefix_proxy_button')
         }
         footer={
@@ -2247,6 +2338,42 @@ export function AuthFilesPage() {
                     }
                     onChange={(e) => handlePrefixProxyChange('proxyUrl', e.target.value)}
                   />
+                  <Input
+                    label={t('auth_files.priority_label')}
+                    value={prefixProxyEditor.priority}
+                    placeholder={t('auth_files.priority_placeholder')}
+                    hint={t('auth_files.priority_hint')}
+                    disabled={
+                      disableControls || prefixProxyEditor.saving || !prefixProxyEditor.json
+                    }
+                    onChange={(e) => handlePrefixProxyChange('priority', e.target.value)}
+                  />
+                  <div className="form-group">
+                    <label>{t('auth_files.excluded_models_label')}</label>
+                    <textarea
+                      className="input"
+                      value={prefixProxyEditor.excludedModelsText}
+                      placeholder={t('auth_files.excluded_models_placeholder')}
+                      rows={4}
+                      disabled={
+                        disableControls || prefixProxyEditor.saving || !prefixProxyEditor.json
+                      }
+                      onChange={(e) =>
+                        handlePrefixProxyChange('excludedModelsText', e.target.value)
+                      }
+                    />
+                    <div className="hint">{t('auth_files.excluded_models_hint')}</div>
+                  </div>
+                  <Input
+                    label={t('auth_files.disable_cooling_label')}
+                    value={prefixProxyEditor.disableCooling}
+                    placeholder={t('auth_files.disable_cooling_placeholder')}
+                    hint={t('auth_files.disable_cooling_hint')}
+                    disabled={
+                      disableControls || prefixProxyEditor.saving || !prefixProxyEditor.json
+                    }
+                    onChange={(e) => handlePrefixProxyChange('disableCooling', e.target.value)}
+                  />
                 </div>
               </>
             )}

src/pages/UsagePage.module.scss

@@ -25,6 +25,12 @@
   flex-wrap: wrap;
 }
 
+.lastRefreshed {
+  font-size: 11px;
+  color: var(--text-tertiary);
+  white-space: nowrap;
+}
+
 .timeRangeGroup {
   display: inline-flex;
   align-items: center;
@@ -423,6 +429,42 @@
 }
 
 // API List (80%比例)
+.apiSortBar {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+  margin-bottom: 10px;
+}
+
+.apiSortBtn {
+  padding: 4px 10px;
+  border-radius: $radius-full;
+  border: 1px solid var(--border-color);
+  background: var(--bg-secondary);
+  color: var(--text-secondary);
+  font-size: 11px;
+  font-weight: 500;
+  cursor: pointer;
+  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
+
+  &:hover {
+    background: var(--bg-tertiary);
+    color: var(--text-primary);
+  }
+
+  &:focus-visible {
+    outline: 2px solid var(--primary-color);
+    outline-offset: 1px;
+  }
+}
+
+.apiSortBtnActive {
+  border-color: rgba(59, 130, 246, 0.5);
+  background: rgba(59, 130, 246, 0.10);
+  color: var(--text-primary);
+  font-weight: 600;
+}
+
 .apiList {
   display: flex;
   flex-direction: column;
@@ -437,16 +479,27 @@
 }
 
 .apiHeader {
+  width: 100%;
   display: flex;
   justify-content: space-between;
   align-items: center;
   padding: 10px;
+  border: 0;
+  background: transparent;
+  color: inherit;
+  font: inherit;
+  text-align: left;
   cursor: pointer;
   transition: background-color 0.15s ease;
 
   &:hover {
     background-color: var(--bg-tertiary);
   }
+
+  &:focus-visible {
+    outline: 2px solid var(--primary-color);
+    outline-offset: -2px;
+  }
 }
 
 .apiInfo {
@@ -527,6 +580,26 @@
   }
 }
 
+// Fixed-height cards with internal scrolling (API details / model stats)
+.detailsFixedCard {
+  display: flex;
+  flex-direction: column;
+  height: 520px;
+  overflow: hidden;
+
+  @include mobile {
+    height: 420px;
+  }
+}
+
+.detailsScroll {
+  flex: 1 1 auto;
+  min-height: 0;
+  overflow: auto;
+  -webkit-overflow-scrolling: touch;
+  overscroll-behavior: contain;
+}
+
 // Table (80%比例)
 .tableWrapper {
   overflow-x: auto;
@@ -550,6 +623,15 @@
     white-space: nowrap;
   }
 
+  th.sortableHeader {
+    user-select: none;
+    transition: color 0.15s ease;
+
+    &:hover {
+      color: var(--text-primary);
+    }
+  }
+
   td {
     color: var(--text-primary);
   }
@@ -559,12 +641,44 @@
   }
 }
 
+.sortHeaderButton {
+  display: inline-flex;
+  align-items: center;
+  width: 100%;
+  border: 0;
+  padding: 0;
+  background: transparent;
+  color: inherit;
+  font: inherit;
+  text-align: left;
+  cursor: pointer;
+
+  &:focus-visible {
+    outline: 2px solid var(--primary-color);
+    outline-offset: 2px;
+    border-radius: $radius-sm;
+  }
+}
+
 .modelCell {
   font-weight: 500;
   max-width: 240px;
   word-break: break-all;
 }
 
+.credentialType {
+  display: inline-block;
+  margin-left: 6px;
+  padding: 1px 6px;
+  border-radius: $radius-full;
+  font-size: 10px;
+  font-weight: 600;
+  color: var(--text-secondary);
+  background: var(--bg-tertiary);
+  border: 1px solid var(--border-color);
+  vertical-align: middle;
+}
+
 .requestCountCell {
   display: inline-flex;
   align-items: baseline;

src/pages/UsagePage.tsx

@@ -16,7 +16,7 @@ import { LoadingSpinner } from '@/components/ui/LoadingSpinner';
 import { IconChevronDown } from '@/components/ui/icons';
 import { useMediaQuery } from '@/hooks/useMediaQuery';
 import { useHeaderRefresh } from '@/hooks/useHeaderRefresh';
-import { useThemeStore } from '@/stores';
+import { useThemeStore, useConfigStore } from '@/stores';
 import {
   StatCards,
   UsageChart,
@@ -24,6 +24,9 @@ import {
   ApiDetailsCard,
   ModelStatsCard,
   PriceSettingsCard,
+  CredentialStatsCard,
+  TokenBreakdownChart,
+  CostTrendChart,
   useUsageData,
   useSparklines,
   useChartData
@@ -115,6 +118,7 @@ export function UsagePage() {
   const isMobile = useMediaQuery('(max-width: 768px)');
   const resolvedTheme = useThemeStore((state) => state.resolvedTheme);
   const isDark = resolvedTheme === 'dark';
+  const config = useConfigStore((state) => state.config);
 
   // Time range dropdown
   const [timeRangeOpen, setTimeRangeOpen] = useState(false);
@@ -134,6 +138,7 @@ export function UsagePage() {
     usage,
     loading,
     error,
+    lastRefreshedAt,
     modelPrices,
     setModelPrices,
     loadUsage,
@@ -305,6 +310,11 @@ export function UsagePage() {
             style={{ display: 'none' }}
             onChange={handleImportChange}
           />
+          {lastRefreshedAt && (
+            <span className={styles.lastRefreshed}>
+              {t('usage_stats.last_updated')}: {lastRefreshedAt.toLocaleTimeString()}
+            </span>
+          )}
         </div>
       </div>
 
@@ -356,12 +366,42 @@ export function UsagePage() {
         />
       </div>
 
+      {/* Token Breakdown Chart */}
+      <TokenBreakdownChart
+        usage={filteredUsage}
+        loading={loading}
+        isDark={isDark}
+        isMobile={isMobile}
+        hourWindowHours={hourWindowHours}
+      />
+
+      {/* Cost Trend Chart */}
+      <CostTrendChart
+        usage={filteredUsage}
+        loading={loading}
+        isDark={isDark}
+        isMobile={isMobile}
+        modelPrices={modelPrices}
+        hourWindowHours={hourWindowHours}
+      />
+
       {/* Details Grid */}
       <div className={styles.detailsGrid}>
         <ApiDetailsCard apiStats={apiStats} loading={loading} hasPrices={hasPrices} />
         <ModelStatsCard modelStats={modelStats} loading={loading} hasPrices={hasPrices} />
       </div>
 
+      {/* Credential Stats */}
+      <CredentialStatsCard
+        usage={filteredUsage}
+        loading={loading}
+        geminiKeys={config?.geminiApiKeys || []}
+        claudeConfigs={config?.claudeApiKeys || []}
+        codexConfigs={config?.codexApiKeys || []}
+        vertexConfigs={config?.vertexApiKeys || []}
+        openaiProviders={config?.openaiCompatibility || []}
+      />
+
       {/* Price Settings */}
       <PriceSettingsCard
         modelNames={modelNames}

src/utils/usage.ts

@@ -387,17 +387,6 @@ export function maskUsageSensitiveValue(value: unknown, masker: (val: string) =>
   return masked;
 }
 
-/**
- * 格式化 tokens 为百万单位
- */
-export function formatTokensInMillions(value: number): string {
-  const num = Number(value);
-  if (!Number.isFinite(num)) {
-    return '0.00M';
-  }
-  return `${(num / 1_000_000).toFixed(2)}M`;
-}
-
 /**
  * 格式化每分钟数值
  */
@@ -1277,3 +1266,208 @@ export function computeKeyStats(usageData: unknown, masker: (val: string) => str
     byAuthIndex: authIndexStats
   };
 }
+
+export type TokenCategory = 'input' | 'output' | 'cached' | 'reasoning';
+
+export interface TokenBreakdownSeries {
+  labels: string[];
+  dataByCategory: Record<TokenCategory, number[]>;
+  hasData: boolean;
+}
+
+/**
+ * 按 token 类别构建小时级别的堆叠序列
+ */
+export function buildHourlyTokenBreakdown(
+  usageData: unknown,
+  hourWindow: number = 24
+): TokenBreakdownSeries {
+  const hourMs = 60 * 60 * 1000;
+  const resolvedHourWindow =
+    Number.isFinite(hourWindow) && hourWindow > 0
+      ? Math.min(Math.max(Math.floor(hourWindow), 1), 24 * 31)
+      : 24;
+  const now = new Date();
+  const currentHour = new Date(now);
+  currentHour.setMinutes(0, 0, 0);
+
+  const earliestBucket = new Date(currentHour);
+  earliestBucket.setHours(earliestBucket.getHours() - (resolvedHourWindow - 1));
+  const earliestTime = earliestBucket.getTime();
+
+  const labels: string[] = [];
+  for (let i = 0; i < resolvedHourWindow; i++) {
+    labels.push(formatHourLabel(new Date(earliestTime + i * hourMs)));
+  }
+
+  const dataByCategory: Record<TokenCategory, number[]> = {
+    input: new Array(labels.length).fill(0),
+    output: new Array(labels.length).fill(0),
+    cached: new Array(labels.length).fill(0),
+    reasoning: new Array(labels.length).fill(0),
+  };
+
+  const details = collectUsageDetails(usageData);
+  let hasData = false;
+
+  details.forEach((detail) => {
+    const timestamp = Date.parse(detail.timestamp);
+    if (Number.isNaN(timestamp)) return;
+    const normalized = new Date(timestamp);
+    normalized.setMinutes(0, 0, 0);
+    const bucketStart = normalized.getTime();
+    const lastBucketTime = earliestTime + (labels.length - 1) * hourMs;
+    if (bucketStart < earliestTime || bucketStart > lastBucketTime) return;
+    const bucketIndex = Math.floor((bucketStart - earliestTime) / hourMs);
+    if (bucketIndex < 0 || bucketIndex >= labels.length) return;
+
+    const tokens = detail.tokens;
+    const input = typeof tokens.input_tokens === 'number' ? Math.max(tokens.input_tokens, 0) : 0;
+    const output = typeof tokens.output_tokens === 'number' ? Math.max(tokens.output_tokens, 0) : 0;
+    const cached = Math.max(
+      typeof tokens.cached_tokens === 'number' ? Math.max(tokens.cached_tokens, 0) : 0,
+      typeof tokens.cache_tokens === 'number' ? Math.max(tokens.cache_tokens, 0) : 0,
+    );
+    const reasoning = typeof tokens.reasoning_tokens === 'number' ? Math.max(tokens.reasoning_tokens, 0) : 0;
+
+    dataByCategory.input[bucketIndex] += input;
+    dataByCategory.output[bucketIndex] += output;
+    dataByCategory.cached[bucketIndex] += cached;
+    dataByCategory.reasoning[bucketIndex] += reasoning;
+    hasData = true;
+  });
+
+  return { labels, dataByCategory, hasData };
+}
+
+/**
+ * 按 token 类别构建日级别的堆叠序列
+ */
+export function buildDailyTokenBreakdown(usageData: unknown): TokenBreakdownSeries {
+  const details = collectUsageDetails(usageData);
+  const dayMap: Record<string, Record<TokenCategory, number>> = {};
+  let hasData = false;
+
+  details.forEach((detail) => {
+    const timestamp = Date.parse(detail.timestamp);
+    if (Number.isNaN(timestamp)) return;
+    const dayLabel = formatDayLabel(new Date(timestamp));
+    if (!dayLabel) return;
+
+    if (!dayMap[dayLabel]) {
+      dayMap[dayLabel] = { input: 0, output: 0, cached: 0, reasoning: 0 };
+    }
+
+    const tokens = detail.tokens;
+    const input = typeof tokens.input_tokens === 'number' ? Math.max(tokens.input_tokens, 0) : 0;
+    const output = typeof tokens.output_tokens === 'number' ? Math.max(tokens.output_tokens, 0) : 0;
+    const cached = Math.max(
+      typeof tokens.cached_tokens === 'number' ? Math.max(tokens.cached_tokens, 0) : 0,
+      typeof tokens.cache_tokens === 'number' ? Math.max(tokens.cache_tokens, 0) : 0,
+    );
+    const reasoning = typeof tokens.reasoning_tokens === 'number' ? Math.max(tokens.reasoning_tokens, 0) : 0;
+
+    dayMap[dayLabel].input += input;
+    dayMap[dayLabel].output += output;
+    dayMap[dayLabel].cached += cached;
+    dayMap[dayLabel].reasoning += reasoning;
+    hasData = true;
+  });
+
+  const labels = Object.keys(dayMap).sort();
+  const dataByCategory: Record<TokenCategory, number[]> = {
+    input: labels.map((l) => dayMap[l].input),
+    output: labels.map((l) => dayMap[l].output),
+    cached: labels.map((l) => dayMap[l].cached),
+    reasoning: labels.map((l) => dayMap[l].reasoning),
+  };
+
+  return { labels, dataByCategory, hasData };
+}
+
+export interface CostSeries {
+  labels: string[];
+  data: number[];
+  hasData: boolean;
+}
+
+/**
+ * 按小时构建费用时间序列
+ */
+export function buildHourlyCostSeries(
+  usageData: unknown,
+  modelPrices: Record<string, ModelPrice>,
+  hourWindow: number = 24
+): CostSeries {
+  const hourMs = 60 * 60 * 1000;
+  const resolvedHourWindow =
+    Number.isFinite(hourWindow) && hourWindow > 0
+      ? Math.min(Math.max(Math.floor(hourWindow), 1), 24 * 31)
+      : 24;
+  const now = new Date();
+  const currentHour = new Date(now);
+  currentHour.setMinutes(0, 0, 0);
+
+  const earliestBucket = new Date(currentHour);
+  earliestBucket.setHours(earliestBucket.getHours() - (resolvedHourWindow - 1));
+  const earliestTime = earliestBucket.getTime();
+
+  const labels: string[] = [];
+  for (let i = 0; i < resolvedHourWindow; i++) {
+    labels.push(formatHourLabel(new Date(earliestTime + i * hourMs)));
+  }
+
+  const data = new Array(labels.length).fill(0);
+  const details = collectUsageDetails(usageData);
+  let hasData = false;
+
+  details.forEach((detail) => {
+    const timestamp = Date.parse(detail.timestamp);
+    if (Number.isNaN(timestamp)) return;
+    const normalized = new Date(timestamp);
+    normalized.setMinutes(0, 0, 0);
+    const bucketStart = normalized.getTime();
+    const lastBucketTime = earliestTime + (labels.length - 1) * hourMs;
+    if (bucketStart < earliestTime || bucketStart > lastBucketTime) return;
+    const bucketIndex = Math.floor((bucketStart - earliestTime) / hourMs);
+    if (bucketIndex < 0 || bucketIndex >= labels.length) return;
+
+    const cost = calculateCost(detail, modelPrices);
+    if (cost > 0) {
+      data[bucketIndex] += cost;
+      hasData = true;
+    }
+  });
+
+  return { labels, data, hasData };
+}
+
+/**
+ * 按天构建费用时间序列
+ */
+export function buildDailyCostSeries(
+  usageData: unknown,
+  modelPrices: Record<string, ModelPrice>
+): CostSeries {
+  const details = collectUsageDetails(usageData);
+  const dayMap: Record<string, number> = {};
+  let hasData = false;
+
+  details.forEach((detail) => {
+    const timestamp = Date.parse(detail.timestamp);
+    if (Number.isNaN(timestamp)) return;
+    const dayLabel = formatDayLabel(new Date(timestamp));
+    if (!dayLabel) return;
+
+    const cost = calculateCost(detail, modelPrices);
+    if (cost > 0) {
+      dayMap[dayLabel] = (dayMap[dayLabel] || 0) + cost;
+      hasData = true;
+    }
+  });
+
+  const labels = Object.keys(dayMap).sort();
+  const data = labels.map((l) => dayMap[l]);
+
+  return { labels, data, hasData };
+}