feat(http): reqwest 客户端启用 brotli / deflate 解码

对接部分 provider 时会返回 Content-Encoding: br / deflate，
缺少对应 feature 时 reqwest 只能按压缩字节原样交给调用方，
导致 text() 解码异常或 body 看似为空。显式开启两项 feature，
让所有标准压缩响应都可被正常还原。

src-tauri/Cargo.lock

@@ -406,6 +406,7 @@ version = "0.4.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "eb7b51a7d9c967fc26773061ba86150f19c50c0d65c887cb1fbe295fd16619b7"
 dependencies = [
+ "brotli",
  "compression-core",
  "flate2",
  "memchr",

src-tauri/Cargo.toml

@@ -23,7 +23,7 @@ serde_json = "1"
 dirs = "6"
 chrono = "0.4"
 zip = { version = "2", default-features = false, features = ["deflate"] }
-reqwest = { version = "0.12", features = ["json", "rustls-tls", "stream", "gzip"], default-features = false }
+reqwest = { version = "0.12", features = ["json", "rustls-tls", "stream", "gzip", "brotli", "deflate"], default-features = false }
 futures-util = "0.3"
 ed25519-dalek = { version = "2", features = ["rand_core"] }
 sha2 = "0.10"

src-tauri/src/commands/mod.rs

@@ -357,7 +357,11 @@ fn build_http_client_opt(
     user_agent: Option<&str>,
     use_proxy: bool,
 ) -> Result<reqwest::Client, String> {
-    let mut builder = reqwest::Client::builder().timeout(timeout).gzip(true);
+    let mut builder = reqwest::Client::builder()
+        .timeout(timeout)
+        .gzip(true)
+        .brotli(true)
+        .deflate(true);
     if let Some(ua) = user_agent {
         builder = builder.user_agent(ua);
     }