feat: 增强 provider query 端点选择逻辑，支持 openai:responses 格式与 key 级 api_formats 过滤

- provider_query_selected_fetch_endpoints 支持按 key.api_formats 过滤可用端点
- 端点选择增加 endpoint_supports_rust_models_fetch 检查
- 支持优先级列表之外的自定义 api_format 端点
- 新增 openai:responses 端点的 provider query 集成测试
- 各 crate 补充缺失的 tracing instrument 和小修正
- 前端 Pool 管理页面补充状态逻辑

frontend/src/features/pool/utils/__tests__/poolManagementState.spec.ts

@@ -3,6 +3,7 @@ import { beforeEach, describe, expect, it } from 'vitest'
 import {
   buildPoolManagementQueryPatch,
   readPoolManagementViewState,
+  resolvePoolManagementPageAfterLoad,
   writePoolManagementViewState,
 } from '@/features/pool/utils/poolManagementState'
 
@@ -100,4 +101,24 @@ describe('poolManagementState', () => {
       pageSize: undefined,
     })
   })
+
+  it('clamps a restored page to the last available page after load', () => {
+    expect(
+      resolvePoolManagementPageAfterLoad({
+        requestedPage: 5,
+        pageSize: 50,
+        total: 120,
+      }),
+    ).toBe(3)
+  })
+
+  it('resets an out-of-range empty result page back to page 1', () => {
+    expect(
+      resolvePoolManagementPageAfterLoad({
+        requestedPage: 4,
+        pageSize: 50,
+        total: 0,
+      }),
+    ).toBe(1)
+  })
 })

frontend/src/features/pool/utils/poolManagementState.ts

@@ -127,3 +127,23 @@ export function buildPoolManagementQueryPatch(
         : String(normalized.pageSize),
   }
 }
+
+export function resolvePoolManagementPageAfterLoad(input: {
+  requestedPage: number
+  pageSize: number
+  total: number
+}): number {
+  const requestedPage = normalizePositiveInteger(
+    input.requestedPage,
+    DEFAULT_POOL_MANAGEMENT_VIEW_STATE.page,
+  )
+  const pageSize = normalizePositiveInteger(
+    input.pageSize,
+    DEFAULT_POOL_MANAGEMENT_VIEW_STATE.pageSize,
+  )
+  const total = Math.max(0, Number.parseInt(String(input.total ?? 0), 10) || 0)
+  const lastPage =
+    total > 0 ? Math.ceil(total / pageSize) : DEFAULT_POOL_MANAGEMENT_VIEW_STATE.page
+
+  return Math.min(requestedPage, lastPage)
+}

frontend/src/views/admin/PoolManagement.vue

@@ -1201,6 +1201,7 @@ import {
 import {
   buildPoolManagementQueryPatch,
   readPoolManagementViewState,
+  resolvePoolManagementPageAfterLoad,
   type PoolManagementViewState,
   writePoolManagementViewState,
 } from '@/features/pool/utils/poolManagementState'
@@ -1790,6 +1791,15 @@ async function loadKeys() {
       status,
     })
     if (requestId !== keysRequestId || selectedProviderId.value !== providerId) return
+    const resolvedPage = resolvePoolManagementPageAfterLoad({
+      requestedPage: page,
+      pageSize: pageSizeValue,
+      total: nextPage.total,
+    })
+    if (resolvedPage !== page) {
+      currentPage.value = resolvedPage
+      return
+    }
     keyPage.value = nextPage
   } catch (err) {
     if (requestId !== keysRequestId || selectedProviderId.value !== providerId) return