Add optional external Gitea URL for UI links

src/components/config/ConfigTabs.tsx

@@ -42,6 +42,7 @@ export function ConfigTabs() {
     },
     giteaConfig: {
       url: '',
+      externalUrl: '',
       username: '',
       token: '',
       organization: 'github-mirrors',

src/components/config/GiteaConfigForm.tsx

@@ -195,6 +195,27 @@ export function GiteaConfigForm({ config, setConfig, onAutoSave, isAutoSaving, g
           />
         </div>
 
+        <div>
+          <label
+            htmlFor="gitea-external-url"
+            className="block text-sm font-medium mb-1.5"
+          >
+            Gitea External URL (optional)
+          </label>
+          <input
+            id="gitea-external-url"
+            name="externalUrl"
+            type="url"
+            value={config.externalUrl || ""}
+            onChange={handleChange}
+            className="w-full rounded-md border border-input bg-background px-3 py-2 text-sm shadow-sm transition-colors placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+            placeholder="https://gitea.example.com"
+          />
+          <p className="text-xs text-muted-foreground mt-1">
+            Used only for dashboard links. API sync still uses Gitea URL.
+          </p>
+        </div>
+
         <div>
           <label
             htmlFor="gitea-token"