feat(update): 应用内更新提示支持英文 release notes

crates/dbx-core/src/jdbc.rs

@@ -363,7 +363,8 @@ fn build_plugin_status(
 }
 
 async fn latest_jdbc_plugin() -> Option<JdbcPluginLatest> {
-    fetch_latest_release().await.ok().and_then(|release| release.jdbc_plugin)
+    // 只需 jdbc_plugin，不关心 release notes；传中文 locale 跳过英文 notes 拉取
+    fetch_latest_release("zh-CN").await.ok().and_then(|release| release.jdbc_plugin)
 }
 
 async fn download_jdbc_plugin_zip_with_progress(progress: &impl Fn(AgentProgressEvent)) -> Result<Vec<u8>, String> {

crates/dbx-core/src/update.rs

@@ -2,6 +2,7 @@ use serde::{Deserialize, Serialize};
 
 const LATEST_JSON_PATH: &str = "https://github.com/t8y2/dbx/releases/latest/download/latest.json";
 const LATEST_JSON_R2_PATH: &str = "releases/latest/latest.json";
+const LATEST_EN_NOTES_R2_PATH: &str = "changelog/latest-en.json";
 const GITHUB_RELEASE_API_PREFIX: &str = "https://api.github.com/repos/t8y2/dbx/releases/tags/v";
 const RELEASE_URL_PREFIX: &str = "https://github.com/t8y2/dbx/releases/tag/v";
 
@@ -14,6 +15,10 @@ pub struct TauriRelease {
     pub jdbc_plugin: Option<JdbcPluginLatest>,
     #[serde(skip)]
     pub github: Option<GithubReleaseMetadata>,
+    // 英文 release notes，由 R2 latest-en.json 填充（latest.json 不含此字段）。
+    // 仅当用户界面非中文时拉取，build_update_info 优先用它作为 release_notes。
+    #[serde(skip)]
+    pub notes_en: Option<String>,
 }
 
 #[derive(Debug, Clone, Deserialize)]
@@ -41,7 +46,7 @@ pub struct UpdateInfo {
     pub release_notes: String,
 }
 
-pub async fn fetch_latest_release() -> Result<TauriRelease, String> {
+pub async fn fetch_latest_release(locale: &str) -> Result<TauriRelease, String> {
     let client = build_update_http_client()?;
 
     let resp = crate::race_download(&client, LATEST_JSON_PATH, LATEST_JSON_R2_PATH, "dbx-update-checker")
@@ -52,9 +57,44 @@ pub async fn fetch_latest_release() -> Result<TauriRelease, String> {
     if let Ok(github) = fetch_github_release_metadata(&client, &release.version).await {
         release.github = Some(github);
     }
+    // 非中文界面用户额外拉取英文 release notes；失败/版本不匹配则保持 None，上层回退中文。
+    if !is_chinese_locale(locale) {
+        if let Ok(notes_en) = fetch_latest_release_notes_en(&client, &release.version).await {
+            release.notes_en = Some(notes_en);
+        }
+    }
     Ok(release)
 }
 
+// 拉取 R2 上的英文 release notes（仅最新版本）。version 必须与 latest.json 的 version 一致才采用，
+// 防止 sync-changelog 尚未更新时拿到旧版本英文 notes。
+async fn fetch_latest_release_notes_en(client: &reqwest::Client, expected_version: &str) -> Result<String, String> {
+    let url = format!("{}{LATEST_EN_NOTES_R2_PATH}", crate::R2_CDN_BASE);
+    let resp = client
+        .get(&url)
+        .header(reqwest::header::USER_AGENT, "dbx-update-checker")
+        .send()
+        .await
+        .and_then(|r| r.error_for_status())
+        .map_err(|e| format!("Failed to fetch English release notes: {e}"))?;
+    let data: LatestEnNotes = resp.json().await.map_err(|e| format!("Failed to parse English release notes: {e}"))?;
+    if normalize_version(&data.version) == normalize_version(expected_version) {
+        Ok(data.notes)
+    } else {
+        Err(format!("English release notes version {} mismatch expected {}", data.version, expected_version))
+    }
+}
+
+fn is_chinese_locale(locale: &str) -> bool {
+    locale == "zh-CN" || locale == "zh-TW"
+}
+
+#[derive(Debug, Deserialize)]
+struct LatestEnNotes {
+    version: String,
+    notes: String,
+}
+
 fn build_update_http_client() -> Result<reqwest::Client, String> {
     let mut builder =
         reqwest::Client::builder().timeout(std::time::Duration::from_secs(10)).user_agent("dbx-update-checker");
@@ -212,9 +252,9 @@ async fn fetch_github_release_metadata(
 pub fn build_update_info(release: TauriRelease, current_version: &str) -> UpdateInfo {
     let latest_version = normalize_version(&release.version);
     let github = release.github.as_ref();
-    let release_notes = github
-        .and_then(|metadata| non_empty(metadata.body.as_deref()))
+    let release_notes = non_empty(release.notes_en.as_deref())
         .map(ToOwned::to_owned)
+        .or_else(|| github.and_then(|metadata| non_empty(metadata.body.as_deref())).map(ToOwned::to_owned))
         .or(release.notes)
         .unwrap_or_default();
     let release_name = github
@@ -386,6 +426,7 @@ HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
                 html_url: Some("https://github.com/t8y2/dbx/releases/tag/v0.5.3".to_string()),
                 body: Some("### 新功能\n\n真实发布说明".to_string()),
             }),
+            notes_en: None,
         };
 
         let info = build_update_info(release, "0.5.2");
@@ -395,4 +436,24 @@ HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
         assert_eq!(info.release_notes, "### 新功能\n\n真实发布说明");
         assert!(!info.portable_mode);
     }
+
+    #[test]
+    fn update_info_prefers_english_notes_when_present() {
+        // 非中文界面用户：notes_en 命中时优先于 GitHub 中文 body，应用内更新提示展示英文
+        let release = TauriRelease {
+            version: "0.5.3".to_string(),
+            notes: Some("See the assets below to download and install.".to_string()),
+            jdbc_plugin: None,
+            github: Some(GithubReleaseMetadata {
+                name: Some("DBX v0.5.3".to_string()),
+                html_url: Some("https://github.com/t8y2/dbx/releases/tag/v0.5.3".to_string()),
+                body: Some("### 新功能\n\n真实发布说明".to_string()),
+            }),
+            notes_en: Some("### New Features\n\nReal release notes".to_string()),
+        };
+
+        let info = build_update_info(release, "0.5.2");
+
+        assert_eq!(info.release_notes, "### New Features\n\nReal release notes");
+    }
 }