chore: apply cargo fmt before release

- Format code in app_config.rs to comply with rustfmt rules
- Remove extra blank line in config.rs
- Format test code in app_config_load.rs for consistency

src-tauri/src/app_config.rs

@@ -107,14 +107,8 @@ impl MultiAppConfig {
         let value: serde_json::Value =
             serde_json::from_str(&content).map_err(|e| AppError::json(&config_path, e))?;
         let is_v1 = value.as_object().is_some_and(|map| {
-            let has_providers = map
-                .get("providers")
-                .map(|v| v.is_object())
-                .unwrap_or(false);
-            let has_current = map
-                .get("current")
-                .map(|v| v.is_string())
-                .unwrap_or(false);
+            let has_providers = map.get("providers").map(|v| v.is_object()).unwrap_or(false);
+            let has_current = map.get("current").map(|v| v.is_string()).unwrap_or(false);
             // v1 的充分必要条件：有 providers 和 current，且 apps 不存在（version/mcp 可能存在但不作为 v2 判据）
             let has_apps = map.contains_key("apps");
             has_providers && has_current && !has_apps

src-tauri/src/config.rs

@@ -78,7 +78,6 @@ pub fn get_app_config_path() -> PathBuf {
     get_app_config_dir().join("config.json")
 }
 
-
 /// 清理供应商名称，确保文件名安全
 pub fn sanitize_provider_name(name: &str) -> String {
     name.chars()

src-tauri/tests/app_config_load.rs

@@ -100,6 +100,8 @@ fn load_valid_v2_config_succeeds() {
 
     let loaded = MultiAppConfig::load().expect("v2 should load successfully");
     assert_eq!(loaded.version, 2);
-    assert!(loaded.get_manager(&cc_switch_lib::AppType::Claude).is_some());
+    assert!(loaded
+        .get_manager(&cc_switch_lib::AppType::Claude)
+        .is_some());
     assert!(loaded.get_manager(&cc_switch_lib::AppType::Codex).is_some());
 }