feat: h5 webapp list page with rich cards

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

@@ -2,6 +2,8 @@ package top.yeij.hearth.webview
 
 import android.util.Log
 import top.yeij.hearth.app.AppRepository
+import top.yeij.hearth.webapp.WebApp
+import top.yeij.hearth.webapp.WebAppRepository
 
 class JsBridge(
     private val deviceWidthPx: Int,
@@ -9,6 +11,7 @@ class JsBridge(
     private val density: Float,
     private val darkMode: Boolean,
     private val appRepository: AppRepository? = null,
+    private val webAppRepository: WebAppRepository? = null,
 ) {
     private val gson = com.google.gson.Gson()
 
@@ -34,4 +37,9 @@ class JsBridge(
     // 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
+
+    // 返回 H5 应用清单 JSON（无仓库时返回空数组）
+    // Return the H5 web app manifest JSON (empty array when no repository wired)
+    @android.webkit.JavascriptInterface
+    fun fetchWebApps(): String = gson.toJson(webAppRepository?.fetchManifest() ?: emptyList<WebApp>())
 }