feat: provider api_formats 可空继承、OpenAI 图片 edit/variation 与用量配额多项补强

- 鉴权: provider_api_keys.api_formats 改为可空，OAuth 托管 key 自动继承 provider endpoints 激活格式，相关 handler/测试同步更新
- 图片 planner: OpenAI 图片路由新增 edit/variation 操作并完善参数校验、响应合并与流式处理
- 用量: user me usage 返回区分 client_requested_stream/upstream_is_stream，前端 usage 列表筛选与展示增强
- 统计: stats_daily_model 新增 cache_creation_ephemeral_5m/1h tokens 字段与回填链路
- 配额/observability: quota repository 新增内存与 SQL 扩展，admin observability usage 字段扩充
- 其它: OAuth 导入/轮询收敛、provider 汇总与 pool admin 读写链路小修、新增 system_config 缓存与 provider template handler

Closes #318

Co-authored-by: Entropy.Xu <53283266+Entropy-Xu@users.noreply.github.com>

frontend/src/features/usage/components/RequestDetailDrawer.vue

@@ -58,7 +58,7 @@
                   variant="outline"
                   class="text-xs"
                 >
-                  {{ detail.is_stream ? '流式' : '标准' }}
+                  {{ detail ? formatUsageStreamLabel(detail) : '标准' }}
                 </Badge>
               </div>
               <div class="flex items-center gap-1 shrink-0">
@@ -695,6 +695,7 @@ import { formatApiFormat } from '@/api/endpoints/types/api-format'
 import { formatShortRequestId } from '@/utils/format'
 import { log } from '@/utils/logger'
 import { getEffectiveInputTokens } from '../token-normalization'
+import { formatUsageStreamLabel } from '../utils/status'
 
 // 子组件
 import RequestHeadersContent from './RequestDetailDrawer/RequestHeadersContent.vue'

frontend/src/features/usage/components/UsageRecordsTable.vue

@@ -232,19 +232,14 @@
             >
               取消
             </Badge>
-            <Badge
-              v-else-if="record.is_stream"
-              variant="secondary"
-              class="whitespace-nowrap text-[10px] px-1.5 h-4 leading-4 inline-flex items-center"
-            >
-              流式
-            </Badge>
             <Badge
               v-else
-              variant="outline"
-              class="whitespace-nowrap border-border/60 text-muted-foreground text-[10px] px-1.5 h-4 leading-4 inline-flex items-center"
+              :variant="getUpstreamStream(record) ? 'secondary' : 'outline'"
+              :class="getUpstreamStream(record)
+                ? 'whitespace-nowrap text-[10px] px-1.5 h-4 leading-4 inline-flex items-center'
+                : 'whitespace-nowrap border-border/60 text-muted-foreground text-[10px] px-1.5 h-4 leading-4 inline-flex items-center'"
             >
-              标准
+              {{ getStreamModeLabel(record) }}
             </Badge>
             <span class="text-muted-foreground/50">|</span>
             <span>{{ formatDateTime(record.created_at) }}</span>
@@ -310,7 +305,7 @@
           <TableHead class="h-12 font-semibold w-[120px]">
             API格式
           </TableHead>
-          <TableHead class="h-12 font-semibold w-[70px] text-center">
+          <TableHead class="h-12 font-semibold w-[110px] text-center">
             类型
           </TableHead>
           <TableHead class="h-12 font-semibold w-[140px] text-right">
@@ -534,19 +529,14 @@
             >
               已取消
             </Badge>
-            <Badge
-              v-else-if="record.is_stream"
-              variant="secondary"
-              class="whitespace-nowrap"
-            >
-              流式
-            </Badge>
             <Badge
               v-else
-              variant="outline"
-              class="whitespace-nowrap border-border/60 text-muted-foreground"
+              :variant="getUpstreamStream(record) ? 'secondary' : 'outline'"
+              :class="getUpstreamStream(record)
+                ? 'whitespace-nowrap'
+                : 'whitespace-nowrap border-border/60 text-muted-foreground'"
             >
-              标准
+              {{ getStreamModeLabel(record) }}
             </Badge>
           </TableCell>
           <TableCell class="text-right py-4 w-[140px]">
@@ -678,7 +668,12 @@ import { RefreshCcw, Search } from 'lucide-vue-next'
 import { formatTokens, formatCurrency } from '@/utils/format'
 import { formatDateTime } from '../composables'
 import { getCacheCreationTokens, getEffectiveInputTokens } from '../token-normalization'
-import { isUsageRecordFailed, resolveDisplayRequestStatus } from '../utils/status'
+import {
+  formatUsageStreamLabel,
+  isUsageRecordFailed,
+  isUsageUpstreamStream,
+  resolveDisplayRequestStatus
+} from '../utils/status'
 import { useRowClick } from '@/composables/useRowClick'
 import { formatApiFormat } from '@/api/endpoints/types/api-format'
 import type { DateRangeParams, UsageRecord } from '../types'
@@ -764,6 +759,14 @@ function getDisplayStatus(record: UsageRecord) {
   return resolveDisplayRequestStatus(record)
 }
 
+function getStreamModeLabel(record: UsageRecord): string {
+  return formatUsageStreamLabel(record)
+}
+
+function getUpstreamStream(record: UsageRecord): boolean {
+  return isUsageUpstreamStream(record)
+}
+
 watch(() => props.filterSearch, (value) => {
   if (value !== localSearch.value) {
     localSearch.value = value

frontend/src/features/usage/composables/useUsageFilters.ts

@@ -1,6 +1,6 @@
 import { ref, computed, type Ref } from 'vue'
 import type { UsageRecord, FilterStatusValue } from '../types'
-import { hasUsageFallback, isUsageRecordFailed } from '../utils/status'
+import { hasUsageFallback, isUsageRecordFailed, isUsageUpstreamStream } from '../utils/status'
 
 export interface UseUsageFiltersOptions {
   /** 所有记录的响应式引用 */
@@ -65,11 +65,11 @@ export function useUsageFilters(options: UseUsageFiltersOptions) {
     if (filterStatus.value !== '__all__') {
       if (filterStatus.value === 'stream') {
         records = records.filter(record =>
-          record.is_stream && !isUsageRecordFailed(record)
+          isUsageUpstreamStream(record) && !isUsageRecordFailed(record)
         )
       } else if (filterStatus.value === 'standard') {
         records = records.filter(record =>
-          !record.is_stream && !isUsageRecordFailed(record)
+          !isUsageUpstreamStream(record) && !isUsageRecordFailed(record)
         )
       } else if (filterStatus.value === 'active') {
         records = records.filter(record =>

frontend/src/features/usage/types.ts

@@ -107,6 +107,9 @@ export interface UsageRecord {
   response_time_ms?: number
   first_byte_time_ms?: number  // 首字时间 (TTFB)
   is_stream: boolean
+  upstream_is_stream?: boolean
+  client_requested_stream?: boolean
+  client_is_stream?: boolean
   status_code?: number
   error_message?: string
   status?: RequestStatus  // 请求状态: pending, streaming, completed, failed

frontend/src/features/usage/utils/__tests__/status.spec.ts

@@ -1,6 +1,7 @@
 import { describe, expect, it } from 'vitest'
 
 import {
+  formatUsageStreamLabel,
   hasUsageFallback,
   isUsageRecordFailed,
   isUsageRecordSuccessful,
@@ -98,6 +99,22 @@ describe('usage status helpers', () => {
     expect(hasUsageFallback(buildUsageRecord({ has_fallback: undefined }))).toBe(false)
   })
 
+  it('prefers symmetric stream aliases when present', () => {
+    expect(formatUsageStreamLabel(buildUsageRecord({
+      is_stream: true,
+      upstream_is_stream: true,
+      client_requested_stream: true,
+      client_is_stream: false,
+    }))).toBe('标准 -> 流式')
+  })
+
+  it('falls back to legacy stream fields when symmetric aliases are absent', () => {
+    expect(formatUsageStreamLabel(buildUsageRecord({
+      is_stream: true,
+      client_requested_stream: false,
+    }))).toBe('标准 -> 流式')
+  })
+
   it('uses status code only as a last fallback for timeline status', () => {
     expect(resolveTimelineFinalStatus({
       statusCode: 200,

frontend/src/features/usage/utils/status.ts

@@ -17,6 +17,52 @@ export function hasUsageFallback(
   return record.has_fallback === true
 }
 
+export function resolveUsageStreamModes(
+  record: Pick<
+    UsageRecord,
+    'is_stream' | 'upstream_is_stream' | 'client_requested_stream' | 'client_is_stream'
+  >
+): { clientRequestedStream: boolean, upstreamStream: boolean } {
+  const upstreamStream = typeof record.upstream_is_stream === 'boolean'
+    ? record.upstream_is_stream
+    : record.is_stream
+
+  return {
+    clientRequestedStream: typeof record.client_is_stream === 'boolean'
+      ? record.client_is_stream
+      : typeof record.client_requested_stream === 'boolean'
+        ? record.client_requested_stream
+        : upstreamStream,
+    upstreamStream
+  }
+}
+
+export function isUsageUpstreamStream(
+  record: Pick<
+    UsageRecord,
+    'is_stream' | 'upstream_is_stream' | 'client_requested_stream' | 'client_is_stream'
+  >
+): boolean {
+  return resolveUsageStreamModes(record).upstreamStream
+}
+
+export function formatUsageStreamLabel(
+  record: Pick<
+    UsageRecord,
+    'is_stream' | 'upstream_is_stream' | 'client_requested_stream' | 'client_is_stream'
+  >
+): string {
+  const { clientRequestedStream, upstreamStream } = resolveUsageStreamModes(record)
+  const clientLabel = clientRequestedStream ? '流式' : '标准'
+  const upstreamLabel = upstreamStream ? '流式' : '标准'
+
+  if (clientRequestedStream === upstreamStream) {
+    return clientLabel
+  }
+
+  return `${clientLabel} -> ${upstreamLabel}`
+}
+
 function hasTerminalSuccessStatusCode(
   record: Pick<UsageRecord, 'status_code'>
 ): boolean {