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 <[email protected]>

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