模型限制: 系统配置全局开放/禁止 + 用户级限制 + 网关拦截

- User 新增 allowed_models/denied_models(用户级模型限制)
- 系统配置 model_allowlist/model_denylist 全局策略, 保存即时失效网关缓存
- 网关 checkModelAllowed: 用户级 > 全局(禁止命中→403, 白名单非空→仅白名单)
- 三个协议处理器均校验, 错误按客户端协议格式返回
- 配置页"模型限制"卡片(全局允许/禁止多选); 用户编辑支持允许/禁止模型

Co-Authored-By: Claude <noreply@anthropic.com>

web/src/views/admin/ConfigView.vue

@@ -9,12 +9,31 @@ const config = reactive<Record<string, string>>({})
 const loading = ref(false)
 const saving = ref(false)
 
+const availableModels = ref<string[]>([])
+const allowList = ref<string[]>([])
+const denyList = ref<string[]>([])
+
+function parseConfigList(v: unknown): string[] {
+  if (!v) return []
+  if (Array.isArray(v)) return v.map(String)
+  try {
+    const a = JSON.parse(String(v))
+    return Array.isArray(a) ? a.map(String) : []
+  } catch {
+    return []
+  }
+}
+
 async function load() {
   loading.value = true
   try {
     const { data } = await http.get('/admin/config')
     Object.keys(config).forEach((k) => delete config[k])
     Object.assign(config, data.data.config)
+    allowList.value = parseConfigList(config.model_allowlist)
+    denyList.value = parseConfigList(config.model_denylist)
+    delete config.model_allowlist
+    delete config.model_denylist
   } catch (e) {
     toast.err(errMsg(e))
   } finally {
@@ -22,10 +41,22 @@ async function load() {
   }
 }
 
+async function loadModels() {
+  try {
+    const { data } = await http.get('/admin/models')
+    availableModels.value = (data.data.items as { name: string }[]).map((m) => m.name)
+  } catch {
+    /* 忽略 */
+  }
+}
+
 async function save() {
   saving.value = true
   try {
-    await http.put('/admin/config', config)
+    const payload: Record<string, unknown> = { ...config }
+    payload.model_allowlist = allowList.value
+    payload.model_denylist = denyList.value
+    await http.put('/admin/config', payload)
     toast.ok('配置已保存')
   } catch (e) {
     toast.err(errMsg(e))
@@ -34,14 +65,59 @@ async function save() {
   }
 }
 
-onMounted(load)
+onMounted(() => {
+  load()
+  loadModels()
+})
 </script>
 
 <template>
-  <div class="mx-auto max-w-2xl">
-    <div class="mb-6">
+  <div class="mx-auto max-w-2xl space-y-6">
+    <div class="mb-2">
       <h1 class="text-lg font-semibold">系统配置</h1>
-      <p class="text-sm text-muted">注册策略等平台级配置</p>
+      <p class="text-sm text-muted">注册策略与模型访问限制</p>
+    </div>
+
+    <div class="card p-6">
+      <div class="mb-5">
+        <h2 class="text-sm font-semibold">模型限制</h2>
+        <p class="mt-1 text-xs text-muted">
+          针对全部用户开放/禁止模型；用户级限制优先级更高（用户管理里可单独配置）。
+        </p>
+      </div>
+
+      <div class="space-y-5">
+        <div>
+          <p class="mb-2 text-xs font-medium text-muted">允许的模型（留空 = 全部开放）</p>
+          <div class="flex max-h-40 flex-wrap gap-2 overflow-y-auto">
+            <label
+              v-for="m in availableModels"
+              :key="m"
+              class="flex cursor-pointer items-center gap-1.5 rounded-md border px-2.5 py-1.5 text-xs transition select-none"
+              :class="allowList.includes(m) ? 'border-accent bg-accent-soft text-ink' : 'border-edge2 text-muted hover:border-edge'"
+            >
+              <input v-model="allowList" type="checkbox" :value="m" class="size-3.5 rounded accent-[var(--color-accent)]" />
+              {{ m }}
+            </label>
+            <p v-if="availableModels.length === 0" class="text-xs text-muted">暂无模型，请先在模型定价中添加</p>
+          </div>
+        </div>
+
+        <div>
+          <p class="mb-2 text-xs font-medium text-muted">禁止的模型（黑名单优先）</p>
+          <div class="flex max-h-40 flex-wrap gap-2 overflow-y-auto">
+            <label
+              v-for="m in availableModels"
+              :key="m"
+              class="flex cursor-pointer items-center gap-1.5 rounded-md border px-2.5 py-1.5 text-xs transition select-none"
+              :class="denyList.includes(m) ? 'border-err bg-err-soft text-err' : 'border-edge2 text-muted hover:border-edge'"
+            >
+              <input v-model="denyList" type="checkbox" :value="m" class="size-3.5 rounded accent-[var(--color-err)]" />
+              {{ m }}
+            </label>
+          </div>
+        </div>
+      </div>
     </div>
 
     <div class="card space-y-5 p-6">
@@ -77,20 +153,12 @@ onMounted(load)
               class="h-10 w-full rounded-md border border-edge2 bg-surface px-3 font-mono text-xs outline-none focus:border-accent"
             />
           </div>
-
-          <div class="flex items-center justify-between rounded-md border border-edge bg-surface px-4 py-3">
-            <div>
-              <p class="text-sm text-ink">其他配置项</p>
-              <p class="text-xs text-muted">汇率、限流阈值、维护开关在后续里程碑开放</p>
-            </div>
-            <span class="font-mono text-xs text-muted">M3+</span>
-          </div>
-        </div>
-
-        <div class="flex justify-end">
-          <Button :loading="saving" @click="save">保存</Button>
         </div>
       </template>
     </div>
+
+    <div class="flex justify-end">
+      <Button :loading="saving" @click="save">保存配置</Button>
+    </div>
   </div>
 </template>