fix(frontend): default forward speed rule to no limit

Make forward create/edit treat empty speed-limit selection as no limit so the dropdown no longer shows the generic placeholder, and remove announcement console logging to keep frontend lint clean.

vite-frontend/src/pages/config.tsx

@@ -28,11 +28,7 @@ import {
 } from "@/api";
 import { SettingsIcon } from "@/components/icons";
 import { isAdmin } from "@/utils/auth";
-import {
+import { getCachedConfigs, configCache, updateSiteConfig } from "@/config/site";
-  getCachedConfigs,
-  configCache,
-  updateSiteConfig,
-} from "@/config/site";
 import {
   type UpdateReleaseChannel,
   getUpdateReleaseChannel,
@@ -112,15 +108,13 @@ const CONFIG_ITEMS: ConfigItem[] = [
   {
     key: "app_logo",
     label: "网页角标 Logo",
-    description:
+    description: "用于页面左上角导航角标，上传后会自动转换为 PNG 并持久化保存",
-      "用于页面左上角导航角标，上传后会自动转换为 PNG 并持久化保存",
     type: "input",
   },
   {
     key: "app_favicon",
     label: "浏览器缩略图标",
-    description:
+    description: "用于浏览器标签页图标，上传后会自动转换为 PNG 并持久化保存",
-      "用于浏览器标签页图标，上传后会自动转换为 PNG 并持久化保存",
     type: "input",
   },
   {
@@ -293,8 +287,7 @@ export default function ConfigPage() {
       if (res.code === 0 && res.data) {
         setAnnouncement(res.data);
       }
-    } catch (error) {
+    } catch {
-      console.error("Failed to load announcement:", error);
     } finally {
       setAnnouncementLoading(false);
     }
@@ -534,7 +527,10 @@ export default function ConfigPage() {
     );
   };
 
-  const renderBrandAssetUploader = (key: BrandPreviewKey, isChanged: boolean) => {
+  const renderBrandAssetUploader = (
+    key: BrandPreviewKey,
+    isChanged: boolean,
+  ) => {
     const value = (configs[key] || "").trim();
     const uploading = brandUploading[key] === true;
     const isLogo = key === "app_logo";
@@ -548,9 +544,9 @@ export default function ConfigPage() {
         }`}
       >
         <input
+          ref={getBrandInputRef(key)}
           accept={BRAND_FILE_ACCEPT}
           className="hidden"
-          ref={getBrandInputRef(key)}
           type="file"
           onChange={(event) => {
             void handleBrandFileChange(key, event);
@@ -581,7 +577,9 @@ export default function ConfigPage() {
           >
             清除
           </Button>
-          <span className="text-xs text-default-500">仅支持图片文件，自动转换为 PNG</span>
+          <span className="text-xs text-default-500">
+            仅支持图片文件，自动转换为 PNG
+          </span>
         </div>
 
         <p className="mt-2 text-xs text-default-500">

vite-frontend/src/pages/dashboard/use-dashboard-data.ts

@@ -197,9 +197,7 @@ export const useDashboardData = (): DashboardDataState => {
         if (res.code === 0 && res.data && res.data.enabled === 1) {
           setAnnouncement(res.data);
         }
-      } catch (error) {
+      } catch {}
-        console.error("Failed to load announcement:", error);
-      }
     };
 
     const loadPackageData = async () => {

vite-frontend/src/pages/forward.tsx

@@ -2349,25 +2349,24 @@ export default function ForwardPage() {
 
                   <Select
                     label="限速规则"
+                    placeholder="不限速"
                     selectedKeys={
                       selectedSpeedId !== null
                         ? [selectedSpeedId.toString()]
-                        : ["null"]
+                        : []
                     }
                     variant="bordered"
                     onSelectionChange={(keys) => {
-                      const selectedKey = Array.from(keys)[0] as string;
+                      const selectedKey = Array.from(keys)[0] as
+                        | string
+                        | undefined;
 
                       setForm((prev) => ({
                         ...prev,
-                        speedId:
+                        speedId: selectedKey ? Number(selectedKey) : null,
-                          selectedKey === "null" ? null : Number(selectedKey),
                       }));
                     }}
                   >
-                    <SelectItem key="null" textValue="不限速">
-                      不限速
-                    </SelectItem>
                     {availableSpeedLimits.map((speedLimit) => (
                       <SelectItem
                         key={speedLimit.id.toString()}