添加新闻接口，UI调整

app/src/main/java/com/aiosman/ravenow/entity/Moment.kt

@@ -299,12 +299,21 @@ data class MomentEntity(
     // 关联动态
     var relMoment: MomentEntity? = null,
     // 是否收藏
-    var isFavorite: Boolean = false
+    var isFavorite: Boolean = false,
+    // 新闻相关字段
+    val isNews: Boolean = false,
+    val newsTitle: String = "",
+    val newsUrl: String = "",
+    val newsSource: String = "",
+    val newsCategory: String = "",
+    val newsLanguage: String = "",
+    val newsContent: String = ""
 )
 class MomentLoaderExtraArgs(
     val explore: Boolean? = false,
     val timelineId: Int? = null,
-    val authorId : Int? = null
+    val authorId : Int? = null,
+    val newsOnly: Boolean? = null
 )
 class MomentLoader : DataLoader<MomentEntity,MomentLoaderExtraArgs>() {
     override suspend fun fetchData(
@@ -317,7 +326,8 @@ class MomentLoader : DataLoader<MomentEntity,MomentLoaderExtraArgs>() {
             pageSize = pageSize,
             explore = if (extra.explore == true) "true" else "",
             timelineId = extra.timelineId,
-            authorId = extra.authorId
+            authorId = extra.authorId,
+            newsFilter = if (extra.newsOnly == true) "news_only" else ""
         )
         val data =  result.body()?.let {
             ListContainer(
@@ -355,6 +365,18 @@ class MomentLoader : DataLoader<MomentEntity,MomentLoaderExtraArgs>() {
         onListChanged?.invoke(this.list)
     }
 
+    fun updateCommentCount(id: Int, delta: Int) {
+        this.list = this.list.map { momentItem ->
+            if (momentItem.id == id) {
+                val newCount = (momentItem.commentCount + delta).coerceAtLeast(0)
+                momentItem.copy(commentCount = newCount)
+            } else {
+                momentItem
+            }
+        }.toMutableList()
+        onListChanged?.invoke(this.list)
+    }
+
     fun removeMoment(id: Int) {
         this.list = this.list.filter { it.id != id }.toMutableList()
         onListChanged?.invoke(this.list)