feat: android app list page with search and icons

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

@@ -1,12 +1,14 @@
 package top.yeij.hearth.webview
 
 import android.util.Log
+import top.yeij.hearth.app.AppRepository
 
 class JsBridge(
     private val deviceWidthPx: Int,
     private val deviceHeightPx: Int,
     private val density: Float,
     private val darkMode: Boolean,
+    private val appRepository: AppRepository? = null,
 ) {
     private val gson = com.google.gson.Gson()
 
@@ -22,4 +24,14 @@ class JsBridge(
             )
         )
     }
+
+    // 返回已安装应用列表 JSON（无仓库时返回空数组）
+    // Return installed app list JSON (empty array when no repository wired)
+    @android.webkit.JavascriptInterface
+    fun listApps(): String = appRepository?.listApps() ?: "[]"
+
+    // 启动指定包名应用，成功返回 true（无仓库时返回 false）
+    // Launch an app by package name, true on success (false when no repository wired)
+    @android.webkit.JavascriptInterface
+    fun launchApp(packageName: String): Boolean = appRepository?.launchApp(packageName) ?: false
 }