feat: h5 webapp list page with rich cards

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

@@ -4,8 +4,16 @@ import com.google.gson.Gson
 import top.yeij.hearth.cache.CacheManager
 
 // Web 应用清单条目
+// offline 为离线包路径，null 表示纯在线应用
 // Web app manifest entry
-data class WebApp(val id: String, val name: String, val icon: String, val url: String)
+// offline is the offline package path, null means online-only
+data class WebApp(
+    val id: String,
+    val name: String,
+    val icon: String,
+    val url: String,
+    val offline: String? = null,
+)
 
 // 网络抽象接口：Task 10 的 CardRepository 也会复用
 // HTTP abstraction reused by Task 10 CardRepository
@@ -41,7 +49,10 @@ class WebAppRepository(
             val name = map["name"] as? String ?: return@mapNotNull null
             val icon = map["icon"] as? String ?: return@mapNotNull null
             val url = map["url"] as? String ?: return@mapNotNull null
-            WebApp(id, name, icon, url)
+            // offline 是对象时取其 package 字段，否则 null（纯在线）
+            // offline is an object -> take its package field, otherwise null (online-only)
+            val offline = (map["offline"] as? Map<*, *>)?.get("package") as? String
+            WebApp(id, name, icon, url, offline)
         }
     }
 

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>())
 }