feat: offline package version management, long-press menu

app/src/main/java/top/yeij/hearth/webview/JsBridge.kt

@@ -150,7 +150,7 @@ class JsBridge(
             pushWebappProgress(id, 0)
             Thread {
                 val fullUrl = resolveUrl(pkg)
-                st.downloadAndExtract(id, fullUrl) { p -> pushWebappProgress(id, p) }
+                st.downloadAndExtract(id, fullUrl, app.offlineVersion ?: "") { p -> pushWebappProgress(id, p) }
                 val url = st.localIndexUrl(id) ?: app.url
                 openWebAppAt(container, host, id, url, app.name)
                 pushWebappProgress(id, 100)
@@ -185,6 +185,36 @@ class JsBridge(
     @android.webkit.JavascriptInterface
     fun hasLocalPackage(id: String): Boolean = storage?.hasLocalPackage(id) ?: false
 
+    // 本地离线包版本号（无则空字符串）
+    // Local offline-package version (empty string when absent)
+    @android.webkit.JavascriptInterface
+    fun getLocalVersion(id: String): String = storage?.getLocalVersion(id) ?: ""
+
+    // 删除本地离线包
+    // Delete the local offline package
+    @android.webkit.JavascriptInterface
+    fun deleteLocalPackage(id: String) {
+        Log.d("HearthBridge", "deleteLocalPackage: id=$id")
+        storage?.deleteLocalPackage(id)
+    }
+
+    // 强制更新离线包：删除本地后重新下载
+    // Force-update the offline package: delete local then re-download
+    @android.webkit.JavascriptInterface
+    fun updateOfflinePackage(id: String) {
+        Log.d("HearthBridge", "updateOfflinePackage: id=$id")
+        val st = storage ?: return
+        val app = manifest().firstOrNull { it.id == id } ?: return
+        val pkg = app.offline ?: return
+        st.deleteLocalPackage(id)
+        pushWebappProgress(id, 0)
+        Thread {
+            val fullUrl = resolveUrl(pkg)
+            st.downloadAndExtract(id, fullUrl, app.offlineVersion ?: "") { p -> pushWebappProgress(id, p) }
+            pushWebappProgress(id, 100)
+        }.start()
+    }
+
     // 推送 webapp 加载/下载进度给 H5（0-100）
     // Push webapp load/download progress to H5 (0-100)
     private fun pushWebappProgress(id: String, progress: Int) {