feat(termux): launch 侧同样改写 arm64 natives；真机跑通 MC 1.20.4

- Library::linux_arm64_native_name 收敛改写规则，install 与 launch 共用
- presenter/CLI 的 classpath 组装：1.19+ 的独立 natives 条目按 arm64 坐标
  找文件并进 classpath；≤1.18 的 natives 表条目仍归 natives::collect
- 真机验证：ull install 1.20.4（740MB）→ glibc Temurin 21 + arm64 natives +
  softpipe GL，MC 主菜单在 termux-x11 中渲染（窗口 854x480）
- 已知非致命：narrator flite 缺失、LWJGL JNI 版本告警、oshi cpuVendor NPE

crates/cli/src/commands/snapshot.rs

@@ -75,18 +75,38 @@ pub fn prepare(ctx: &Ctx, input: &PlanInput) -> Result<Plan, CliError> {
 
     let mut libraries: Vec<LibraryInput> = Vec::new();
     for library in resolved.libraries.as_deref().unwrap_or_default() {
-        if !library.applies(&environment) || library.native_classifier(&environment).is_some() {
+        if !library.applies(&environment) {
             continue;
         }
-        let Ok(coordinate) = library.coordinate() else {
+        // 1.19+ 的 natives 是独立库条目（name 带分类器），必须进 classpath；
+        // ≤1.18 的 `natives` 表条目归 natives::collect，不进 classpath。
+        // Linux arm64：独立条目改写成 natives-linux-arm64（路径与展示名一起改）。
+        let arm64 = library.linux_arm64_native_name(&environment);
+        if arm64.is_none() && library.native_classifier(&environment).is_some() {
             continue;
+        }
+        let (coordinate, name) = match arm64 {
+            Some(rewritten) => {
+                let Ok(coordinate) =
+                    unlucky_core::game::library::MavenCoordinate::parse(&rewritten)
+                else {
+                    continue;
+                };
+                (coordinate, rewritten)
+            }
+            None => {
+                let Ok(coordinate) = library.coordinate() else {
+                    continue;
+                };
+                (coordinate, library.name.clone())
+            }
         };
         let path = if library.is_local() {
             game.version_library(&version_id, &coordinate)
         } else {
             game.library(&coordinate)
         };
-        libraries.push(LibraryInput::new(path, library.name.clone()));
+        libraries.push(LibraryInput::new(path, name));
     }
 
     // natives 分类器构件（≤1.18.2 才有）：收集口径归 core，CLI 只搬运。

crates/core/src/game/install/libraries.rs

@@ -159,10 +159,8 @@ struct Arm64Native {
 
 /// Linux arm64：把 `org.lwjgl:<module>:<version>:natives-linux` 改写成 arm64。
 fn linux_arm64_native_entry(library: &Library, env: &Environment) -> Option<Arm64Native> {
-    if env.os != "linux" || env.arch != "arm64" || !library.name.starts_with("org.lwjgl:") {
-        return None;
-    }
-    let base = library.name.strip_suffix(":natives-linux")?;
+    let name = library.linux_arm64_native_name(env)?;
+    let base = name.strip_suffix(":natives-linux-arm64")?;
     let mut parts = base.split(':');
     let group = parts.next()?;
     let artifact = parts.next()?;
@@ -179,7 +177,7 @@ fn linux_arm64_native_entry(library: &Library, env: &Environment) -> Option<Arm6
         relative.to_string_lossy().replace('\\', "/")
     );
     Some(Arm64Native {
-        name: format!("{base}:natives-linux-arm64"),
+        name,
         relative,
         url,
     })

crates/core/src/game/library.rs

@@ -200,6 +200,19 @@ impl Library {
         self.name.starts_with("org.lwjgl:")
     }
 
+    /// 现代清单（1.19+）把 natives 作为独立库条目：Linux arm64 上把
+    /// `org.lwjgl:<module>:<ver>:natives-linux` 改写成 `...:natives-linux-arm64`。
+    ///
+    /// 返回 None 表示不适用（非 Linux/arm64、非 LWJGL3、或不是 natives 条目）。
+    #[must_use]
+    pub fn linux_arm64_native_name(&self, env: &Environment) -> Option<String> {
+        if env.os != "linux" || env.arch != "arm64" || !self.is_lwjgl3() {
+            return None;
+        }
+        let base = self.name.strip_suffix(":natives-linux")?;
+        Some(format!("{base}:natives-linux-arm64"))
+    }
+
     /// natives 构件下载信息（按分类器查 `downloads.classifiers`）。
     pub fn native_artifact(&self, classifier: &str) -> Option<&DownloadInfo> {
         self.downloads.as_ref()?.classifiers.get(classifier)

crates/presenter/src/host/launch.rs

@@ -134,18 +134,38 @@ pub fn build_request(
 
     let mut libraries: Vec<LibraryInput> = Vec::new();
     for library in resolved.libraries.as_deref().unwrap_or_default() {
-        if !library.applies(&environment) || library.native_classifier(&environment).is_some() {
+        if !library.applies(&environment) {
             continue;
         }
-        let Ok(coordinate) = library.coordinate() else {
+        // 1.19+ 的 natives 是独立库条目（name 带分类器），必须进 classpath；
+        // ≤1.18 的 `natives` 表条目归 natives::collect，不进 classpath。
+        // Linux arm64：独立条目改写成 natives-linux-arm64（路径与展示名一起改）。
+        let arm64 = library.linux_arm64_native_name(&environment);
+        if arm64.is_none() && library.native_classifier(&environment).is_some() {
             continue;
+        }
+        let (coordinate, name) = match arm64 {
+            Some(rewritten) => {
+                let Ok(coordinate) =
+                    unlucky_core::game::library::MavenCoordinate::parse(&rewritten)
+                else {
+                    continue;
+                };
+                (coordinate, rewritten)
+            }
+            None => {
+                let Ok(coordinate) = library.coordinate() else {
+                    continue;
+                };
+                (coordinate, library.name.clone())
+            }
         };
         let path = if library.is_local() {
             env.game.version_library(&version_id, &coordinate)
         } else {
             env.game.library(&coordinate)
         };
-        libraries.push(LibraryInput::new(path, library.name.clone()));
+        libraries.push(LibraryInput::new(path, name));
     }
     let natives = unlucky_core::launch::natives::collect(
         &env.game,