feat: add enable/disable toggle for channels

web/src/views/admin/ChannelsView.vue

@@ -309,6 +309,25 @@ onMounted(load)
           <Input v-model="form.timeout_ms" label="超时 (ms)" type="number" />
           <Input v-model="form.max_concurrency" label="最大并发" type="number" />
         </div>
+        <div class="flex items-center justify-between rounded-md border border-edge p-3">
+          <div>
+            <p class="text-sm font-medium text-ink">启用渠道</p>
+            <p class="text-xs text-muted">禁用后该渠道不会被用于请求转发</p>
+          </div>
+          <button
+            type="button"
+            role="switch"
+            :aria-checked="form.enabled"
+            class="relative inline-flex h-6 w-11 shrink-0 cursor-pointer items-center rounded-full transition-colors focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-accent"
+            :class="form.enabled ? 'bg-accent' : 'bg-surface2'"
+            @click="form.enabled = !form.enabled"
+          >
+            <span
+              class="pointer-events-none inline-block h-4 w-4 rounded-full bg-white shadow-sm ring-0 transition-transform"
+              :class="form.enabled ? 'translate-x-6' : 'translate-x-1'"
+            />
+          </button>
+        </div>
       </div>
       <template #footer>
         <Button variant="ghost" @click="editOpen = false">取消</Button>