feat: per-app initial scale config

app/src/main/java/top/yeij/hearth/MainActivity.kt

@@ -271,12 +271,12 @@ class MainActivity : Activity() {
         // Failed webapp ids: on Back, close directly instead of looping goBack
         private val failedWebViews = mutableSetOf<String>()
 
-        override fun openWebView(id: String, url: String, ua: String?) {
+        override fun openWebView(id: String, url: String, ua: String?, scale: Int?) {
             if (contentWebViews.containsKey(id)) {
                 switchWebView(id)
                 return
             }
-            val webView = WebViewManager(this@MainActivity).createContentWebView(ua)
+            val webView = WebViewManager(this@MainActivity).createContentWebView(ua, scale)
             webView.webViewClient = object : WebViewClient() {
                 @Suppress("DEPRECATION", "OVERRIDE_DEPRECATION")
                 override fun onReceivedError(

app/src/main/java/top/yeij/hearth/webapp/WebAppRepository.kt

@@ -17,6 +17,7 @@ data class WebApp(
     val offline: String? = null,
     val offlineVersion: String? = null,
     val ua: String? = null,
+    val scale: Int? = null,
 )
 
 // 网络抽象接口：Task 10 的 CardRepository 也会复用
@@ -111,6 +112,9 @@ class WebAppRepository(
             // ua optional: desktop/pc uses a desktop UA, others are custom UA strings,
             // absent means the default tablet UA
             val ua = map["ua"] as? String
+            // scale 可选：初始缩放百分比（1-100），用于 PC 版页面缩放适配横屏
+            // scale optional: initial zoom percentage (1-100), for scaling desktop pages
+            val scale = (map["scale"] as? Number)?.toInt()
             WebApp(
                 id, name,
                 resolvePath(icon),
@@ -118,6 +122,7 @@ class WebAppRepository(
                 offline?.let { resolvePath(it) },
                 offlineVersion,
                 ua,
+                scale,
             )
         }
     }

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

@@ -144,7 +144,7 @@ class JsBridge(
         // 1. 本地离线包优先（服务端删除后仍可用）
         val localUrl = st?.localIndexUrl(id)
         if (localUrl != null) {
-            openWebAppAt(container, host, id, localUrl, app.name, app.ua)
+            openWebAppAt(container, host, id, localUrl, app.name, app.ua, app.scale)
             return
         }
         // 2. 有离线包 → 后台下载解压（推送进度），完成后加载本地；失败回退远程
@@ -155,24 +155,24 @@ class JsBridge(
                 val fullUrl = resolveUrl(pkg)
                 st.downloadAndExtract(id, fullUrl, app.offlineVersion ?: "") { p -> pushWebappProgress(id, p) }
                 val url = st.localIndexUrl(id) ?: app.url
-                openWebAppAt(container, host, id, url, app.name, app.ua)
+                openWebAppAt(container, host, id, url, app.name, app.ua, app.scale)
                 pushWebappProgress(id, 100)
             }.start()
             return
         }
         // 3. 无离线包 → 远程加载（WebView 自带加载进度）
-        openWebAppAt(container, host, id, app.url, app.name, app.ua)
+        openWebAppAt(container, host, id, app.url, app.name, app.ua, app.scale)
     }
 
     // 在主线程打开指定 url 的 webAPP 标签
     // Open a webapp tab at the given url on the main thread
-    private fun openWebAppAt(container: WebAppContainer, host: WebAppHost, id: String, url: String, name: String, ua: String?) {
+    private fun openWebAppAt(container: WebAppContainer, host: WebAppHost, id: String, url: String, name: String, ua: String?, scale: Int?) {
         onMain {
             container.open(id, url, name)
-            host.openWebView(id, url, ua)
+            host.openWebView(id, url, ua, scale)
             host.syncTabs(container.tabs())
         }
-        Log.d("HearthBridge", "openWebApp: id=$id url=$url ua=$ua")
+        Log.d("HearthBridge", "openWebApp: id=$id url=$url ua=$ua scale=$scale")
     }
 
     // 手动导入离线包（由 MainActivity 触发 SAF 选择 zip）

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

@@ -8,10 +8,11 @@ import top.yeij.hearth.webapp.Tab
 // multi-WebView lifecycle, visibility, and navigation, and syncing tab state
 // back to the desktop H5 topbar
 interface WebAppHost {
-    // 创建内容 WebView 加载 url 并显示（已存在则切换到该标签）；ua 为清单声明的 UA
+    // 创建内容 WebView 加载 url 并显示（已存在则切换到该标签）；ua 为清单声明的 UA，
+    // scale 为清单声明的初始缩放百分比（可为 null）
     // Create a content WebView loading url and show it (switch if already open);
-    // ua is the UA declared in the manifest
+    // ua is the manifest-declared UA, scale is the initial zoom percentage (nullable)
-    fun openWebView(id: String, url: String, ua: String?)
+    fun openWebView(id: String, url: String, ua: String?, scale: Int?)
 
     // 销毁对应内容 WebView
     // Destroy the corresponding content WebView

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

@@ -31,7 +31,7 @@ class WebViewManager(private val activity: Activity) {
     // (lifecycle is managed by the host); transparent background so a webapp without
     // a declared background shows the wallpaper instead of a default white
     @SuppressLint("SetJavaScriptEnabled")
-    fun createContentWebView(ua: String?): WebView {
+    fun createContentWebView(ua: String?, scale: Int?): WebView {
         val webView = WebView(activity)
         webView.setBackgroundColor(Color.TRANSPARENT)
         configure(webView)
@@ -43,6 +43,11 @@ class WebViewManager(private val activity: Activity) {
             ua == "desktop" || ua == "pc" -> UA_DESKTOP
             else -> ua
         }
+        // 初始缩放（1-100）：用于 PC 版页面缩放适配横屏
+        // Initial zoom (1-100): scale desktop pages to fit landscape
+        if (scale != null && scale in 1..100) {
+            webView.setInitialScale(scale)
+        }
         return webView
     }