fix: align media controls center, add media duration logging

app/src/main/assets/h5/css/app.css

@@ -316,6 +316,9 @@ body {
   display: flex;
   gap: 10px;
   justify-content: center;
+  /* 垂直居中：中间播放按钮直径更大，对齐圆心而非顶部 */
+  /* Center vertically: the play button is larger, align centers not tops */
+  align-items: center;
 }
 
 .media-card .controls button {

app/src/main/java/top/yeij/hearth/media/MediaSessionSource.kt

@@ -212,14 +212,18 @@ class MediaSessionSource(context: Context) {
         // Title prefers the live notification title (lyrics), falling back to MediaSession metadata
         val title = notificationTitles[c.packageName]
             ?: (meta?.getString(MediaMetadata.METADATA_KEY_TITLE) ?: "")
+        val duration = meta?.getLong(MediaMetadata.METADATA_KEY_DURATION) ?: 0L
+        val position = state?.position ?: 0L
+        val playing = state?.state == PlaybackState.STATE_PLAYING
+        Log.d(TAG, "media: ${c.packageName} duration=$duration position=$position playing=$playing state=${state?.state}")
         return MediaInfo(
             title,
             meta?.getString(MediaMetadata.METADATA_KEY_ARTIST) ?: "",
             meta?.getString(MediaMetadata.METADATA_KEY_ALBUM) ?: "",
             meta?.getBitmap(MediaMetadata.METADATA_KEY_ART)?.let { bitmapToBase64(it) } ?: "",
-            state?.state == PlaybackState.STATE_PLAYING,
+            playing,
-            state?.position ?: 0L,
+            position,
-            meta?.getLong(MediaMetadata.METADATA_KEY_DURATION) ?: 0L,
+            duration,
             c.packageName,
         )
     }