perf(desktop): stream drag-upload and improve transfer status UX

desktop-client/src-tauri/Cargo.lock

@@ -3116,12 +3116,14 @@ dependencies = [
  "sync_wrapper",
  "tokio",
  "tokio-rustls",
+ "tokio-util",
  "tower",
  "tower-http",
  "tower-service",
  "url",
  "wasm-bindgen",
  "wasm-bindgen-futures",
+ "wasm-streams 0.4.2",
  "web-sys",
  "webpki-roots",
 ]
@@ -3156,7 +3158,7 @@ dependencies = [
  "url",
  "wasm-bindgen",
  "wasm-bindgen-futures",
- "wasm-streams",
+ "wasm-streams 0.5.0",
  "web-sys",
 ]
 
@@ -4716,6 +4718,19 @@ dependencies = [
  "wasmparser",
 ]
 
+[[package]]
+name = "wasm-streams"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "15053d8d85c7eccdbefef60f06769760a563c7f0a9d6902a13d35c7800b0ad65"
+dependencies = [
+ "futures-util",
+ "js-sys",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+]
+
 [[package]]
 name = "wasm-streams"
 version = "0.5.0"

desktop-client/src-tauri/Cargo.toml

@@ -22,5 +22,5 @@ tauri = { version = "2", features = [] }
 tauri-plugin-opener = "2"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
-reqwest = { version = "0.12", default-features = false, features = ["json", "cookies", "multipart", "rustls-tls"] }
+reqwest = { version = "0.12", default-features = false, features = ["json", "cookies", "multipart", "stream", "rustls-tls"] }
 urlencoding = "2.1"

desktop-client/src-tauri/src/lib.rs

@@ -620,8 +620,6 @@ async fn api_upload_file(
         .and_then(|name| name.to_str())
         .map(|name| name.to_string())
         .ok_or_else(|| "无法识别文件名".to_string())?;
-
-    let file_bytes = fs::read(&source_path).map_err(|err| format!("读取文件失败: {}", err))?;
     let normalized_target = if target_path.trim().is_empty() {
         "/".to_string()
     } else {
@@ -634,9 +632,15 @@ async fn api_upload_file(
         return Err("API 地址不能为空".to_string());
     }
 
+    // 使用流式 multipart 上传，避免大文件整块读入内存导致占用暴涨。
+    let file_part = reqwest::multipart::Part::file(&source_path)
+        .await
+        .map_err(|err| format!("读取文件失败: {}", err))?
+        .file_name(file_name);
+
     let multipart = reqwest::multipart::Form::new()
         .text("path", normalized_target)
-        .part("file", reqwest::multipart::Part::bytes(file_bytes).file_name(file_name));
+        .part("file", file_part);
 
     let mut request = state
         .client