feat(#920): adopt GET /api/files/stream for seekable audio and video playback (#930)

Co-authored-by: M57 <hy4ri@users.noreply.github.com>

app/src/main/java/com/m57/hermescontrol/ui/chat/ChatViewModel.kt

@@ -2867,7 +2867,7 @@ class ChatViewModel(
                         items
                             .mapNotNull { item ->
                                 val url =
-                                    GatewayFileClient.buildDownloadUrl(
+                                    GatewayFileClient.buildMediaUrl(
                                         baseUrl,
                                         token,
                                         item.path,
@@ -2985,7 +2985,8 @@ class ChatViewModel(
                 .toSet()
         val newAttachments =
             items.mapNotNull { item ->
-                val url = GatewayFileClient.buildDownloadUrl(baseUrl, "", item.path) ?: return@mapNotNull null
+                val token = AuthManager.getToken().orEmpty()
+                val url = GatewayFileClient.buildMediaUrl(baseUrl, token, item.path) ?: return@mapNotNull null
                 if (url in existingUrls) return@mapNotNull null
                 Attachment(
                     uri = url,

app/src/main/java/com/m57/hermescontrol/ui/chat/MarkdownText.kt

@@ -1062,8 +1062,8 @@ private fun resolveImageUrl(uri: String): String {
     }
     val baseUrl = runCatching { AuthManager.getBaseUrl() }.getOrDefault("")
     val token = runCatching { AuthManager.getToken() }.getOrNull().orEmpty()
-    val downloadUrl = GatewayFileClient.buildDownloadUrl(baseUrl, token, trimmed)
-    if (downloadUrl != null) return downloadUrl
+    val mediaUrl = GatewayFileClient.buildMediaUrl(baseUrl, token, trimmed)
+    if (mediaUrl != null) return mediaUrl
 
     if (baseUrl.isNotBlank() && (trimmed.startsWith("/api/") || trimmed.startsWith("api/"))) {
         val cleanPath = if (trimmed.startsWith("/")) trimmed else "/$trimmed"