diff --git a/src-tauri/src/constants.rs b/src-tauri/src/constants.rs
index 531ff3d..02df6ee 100644
--- a/src-tauri/src/constants.rs
+++ b/src-tauri/src/constants.rs
@@ -53,11 +53,9 @@ pub mod events {
     // 截图
     pub const SCREENSHOT_SHORTCUT: &str = "screenshot-shortcut";
     pub const SCREENSHOT_PIN_SHORTCUT: &str = "screenshot-pin-shortcut";
-    /// 截图结果导出（含覆盖层/编辑器/滚动截图会话）
-    pub const SCREENSHOT_EXPORTED: &str = "screenshot-exported";
     /// 滚动截图会话：实时进度 { width, height, auto }
     pub const SCROLL_PROGRESS: &str = "screenshot-scroll-progress";
-    /// 滚动截图会话：完成并导出（负载与 SCREENSHOT_EXPORTED 相同）
+    /// 滚动截图会话：完成并导出
     pub const SCROLL_COMPLETE: &str = "screenshot-scroll-complete";
     /// 滚动截图会话：已取消（无负载）
     pub const SCROLL_CANCELLED: &str = "screenshot-scroll-cancelled";
diff --git a/src-tauri/src/music/feiniu/fnconnect.rs b/src-tauri/src/music/feiniu/fnconnect.rs
index c9c6b7b..df2eb01 100644
--- a/src-tauri/src/music/feiniu/fnconnect.rs
+++ b/src-tauri/src/music/feiniu/fnconnect.rs
@@ -3,10 +3,9 @@
 //! fnId → 网关 `https://5ddd.com/api/v1/fn/con`（authx md5 签名）→ 内网/公网/中继候选 →
 //! 探测可达性 → 得到可用的 base_url（含 mode=relay 的中继地址）。
 
-use md5::Md5;
+use md5::{Digest, Md5};
 use rand::RngCore;
 use serde_json::{json, Value};
-use sha2::{Digest, Sha256};
 
 /// 网关地址与签名常量（对齐 feiniu-car-music）。
 const FN_CONNECT_URL: &str = "https://5ddd.com/api/v1/fn/con";
@@ -19,12 +18,6 @@ fn md5_hex(input: &str) -> String {
     format!("{:x}", h.finalize())
 }
 
-fn sha256_hex(input: &str) -> String {
-    let mut h = Sha256::new();
-    h.update(input.as_bytes());
-    format!("{:x}", h.finalize())
-}
-
 /// 从输入识别 fnId：`fnos.net/<id>`、`<id>.5ddd.com`、或裸 fnId。
 pub fn extract_fn_id(input: &str) -> Option<String> {
     let s = input.trim();
@@ -159,8 +152,3 @@ pub async fn resolve_base_url(fn_id: &str) -> Result<(String, bool), String> {
     }
     Err(format!("FnConnect 候选均不可达（{} 个）", candidates.len()))
 }
-
-/// sha256 hex（登录用）。
-pub fn sha256_hex_pub(input: &str) -> String {
-    sha256_hex(input)
-}
diff --git a/src-tauri/src/music/feiniu/webdav.rs b/src-tauri/src/music/feiniu/webdav.rs
index 2f3f995..35fe6d6 100644
--- a/src-tauri/src/music/feiniu/webdav.rs
+++ b/src-tauri/src/music/feiniu/webdav.rs
@@ -202,16 +202,4 @@ pub fn mime_of(name: &str) -> &'static str {
     }
 }
 
-/// 保留给调用方校验配置完整性。
-pub fn validate(cfg: &WebDavConfig, dir: &str) -> Result<(), String> {
-    if cfg.url.trim().is_empty() {
-        return Err("请先填写 WebDAV 服务地址（如 http://192.168.110.100:5005）".into());
-    }
-    if cfg.username.trim().is_empty() {
-        return Err("请先填写 WebDAV 账号".into());
-    }
-    if dir.trim().is_empty() {
-        return Err("请先填写 WebDAV 曲库目标目录".into());
-    }
-    Ok(())
-}
+