fix: resolve test failures and clippy warnings

- tests/App.test.tsx: remove outdated SettingsPage mock, use dynamic import
- database/tests.rs: remove unused field, use struct init syntax
- deeplink/tests.rs: use idiomatic assert!() instead of assert_eq!(true)
- support.rs: add #[allow(dead_code)] for test utilities
- usage_stats.rs: code formatting

src-tauri/src/database/tests.rs

@@ -53,7 +53,6 @@ const LEGACY_SCHEMA_SQL: &str = r#"
 
 #[derive(Debug)]
 struct ColumnInfo {
-    name: String,
     r#type: String,
     notnull: i64,
     default: Option<String>,
@@ -65,10 +64,9 @@ fn get_column_info(conn: &Connection, table: &str, column: &str) -> ColumnInfo {
         .expect("prepare pragma");
     let mut rows = stmt.query([]).expect("query pragma");
     while let Some(row) = rows.next().expect("read row") {
-        let name: String = row.get(1).expect("name");
-        if name.eq_ignore_ascii_case(column) {
+        let column_name: String = row.get(1).expect("name");
+        if column_name.eq_ignore_ascii_case(column) {
             return ColumnInfo {
-                name,
                 r#type: row.get::<_, String>(2).expect("type"),
                 notnull: row.get::<_, i64>(3).expect("notnull"),
                 default: row.get::<_, Option<String>>(4).ok().flatten(),
@@ -296,9 +294,10 @@ fn dry_run_validates_schema_compatibility() {
         },
     );
 
-    let mut manager = ProviderManager::default();
-    manager.providers = providers;
-    manager.current = "test-provider".to_string();
+    let manager = ProviderManager {
+        providers,
+        current: "test-provider".to_string(),
+    };
 
     let mut apps = HashMap::new();
     apps.insert("claude".to_string(), manager);

src-tauri/src/deeplink/tests.rs

@@ -375,7 +375,7 @@ fn test_parse_prompt_deeplink() {
     assert_eq!(request.name.unwrap(), "test");
     assert_eq!(request.content.unwrap(), content_b64);
     assert_eq!(request.description.unwrap(), "desc");
-    assert_eq!(request.enabled.unwrap(), true);
+    assert!(request.enabled.unwrap());
 }
 
 #[test]
@@ -391,13 +391,13 @@ fn test_parse_mcp_deeplink() {
     assert_eq!(request.resource, "mcp");
     assert_eq!(request.apps.unwrap(), "claude,codex");
     assert_eq!(request.config.unwrap(), config_b64);
-    assert_eq!(request.enabled.unwrap(), true);
+    assert!(request.enabled.unwrap());
 }
 
 #[test]
 fn test_parse_skill_deeplink() {
     let url = "ccswitch://v1/import?resource=skill&repo=owner/repo&directory=skills&branch=dev";
-    let request = parse_deeplink_url(&url).unwrap();
+    let request = parse_deeplink_url(url).unwrap();
 
     assert_eq!(request.resource, "skill");
     assert_eq!(request.repo.unwrap(), "owner/repo");

src-tauri/src/services/usage_stats.rs

@@ -255,8 +255,7 @@ impl Database {
             Ok(stats)
         } else {
             let today = Local::now().date_naive();
-            let start_day =
-                today - Duration::days((days.saturating_sub(1)) as i64);
+            let start_day = today - Duration::days((days.saturating_sub(1)) as i64);
             let start_of_window = start_day.and_hms_opt(0, 0, 0).unwrap();
             // 使用 earliest() 处理 DST 切换时的歧义时间，fallback 到当前时间减 days 天
             let start_ts = Local

src-tauri/tests/support.rs

@@ -49,6 +49,7 @@ pub fn test_mutex() -> &'static Mutex<()> {
 }
 
 /// 创建测试用的 AppState，包含一个空的数据库
+#[allow(dead_code)]
 pub fn create_test_state() -> Result<AppState, Box<dyn std::error::Error>> {
     let db = Arc::new(Database::init()?);
     let proxy_service = ProxyService::new(db.clone());
@@ -56,6 +57,7 @@ pub fn create_test_state() -> Result<AppState, Box<dyn std::error::Error>> {
 }
 
 /// 创建测试用的 AppState，并从 MultiAppConfig 迁移数据
+#[allow(dead_code)]
 pub fn create_test_state_with_config(
     config: &MultiAppConfig,
 ) -> Result<AppState, Box<dyn std::error::Error>> {