v0.6.3: 添加默认供应商支持

- 新增 StepFun Plan 套餐预设
- 供应商编辑页 API Key 下方添加获取 Key 链接（支持推广链接）
- 修复链接无法打开浏览器的问题（Rust open_external_url）
- 无推广链接时回退打开官网
- 必填字段（供应商名称/API Key/请求地址）添加红色 * 标注
- 用户自定义预设方案文档

src-tauri/src/commands.rs

@@ -856,4 +856,15 @@ pub fn open_installer(app: tauri::AppHandle, path: String) -> Result<(), String>
     app.opener()
         .open_path(&path, None::<&str>)
         .map_err(|e| e.to_string())
+}
+
+/// Open an external https/http URL in the system default browser.
+/// Uses the Rust opener directly (bypassing the JS plugin scope) so it
+/// works regardless of capability scope configuration.
+#[tauri::command]
+pub fn open_external_url(app: tauri::AppHandle, url: String) -> Result<(), String> {
+    use tauri_plugin_opener::OpenerExt;
+    app.opener()
+        .open_url(url, None::<&str>)
+        .map_err(|e| e.to_string())
 }

src-tauri/src/lib.rs

@@ -104,6 +104,7 @@ pub fn run() {
             commands::check_for_update,
             commands::download_update,
             commands::open_installer,
+            commands::open_external_url,
             dashboard::get_paths,
             dashboard::get_prices,
             dashboard::get_summary,