Fix Dispatcharr playback: stream URLs must use the channel UUID

The live proxy resolves /proxy/ts/stream/<key> by channel uuid (or stream
hash) — integer ids 404, so every Dispatcharr channel failed to play.
Streams now use the uuid, channels use effective_name/effective_tvg_id and
skip hidden_from_output entries.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

app/src/main/java/dev/castarr/tv/data/DispatcharrRepository.kt

@@ -78,14 +78,15 @@ class DispatcharrRepository(private val auth: DeviceAuth) {
         }
     }
 
-    private fun streamUrl(id: Int): String {
-        val base = "${auth.serverUrl}/proxy/ts/stream/$id"
+    // The live proxy resolves channels by UUID (integer ids 404).
+    private fun streamUrl(uuid: String): String {
+        val base = "${auth.serverUrl}/proxy/ts/stream/$uuid"
         return if (outputProfile.isNotEmpty()) "$base?output_profile=$outputProfile" else base
     }
 
     /** Re-derive stream URLs (e.g. after the output profile changed). */
     fun rebuildStreamUrls() {
-        channels.value = channels.value.map { it.copy(url = streamUrl(it.backendId)) }
+        channels.value = channels.value.map { it.copy(url = streamUrl(it.streamKey)) }
     }
 
     private suspend fun fetchGroups(token: String): Map<Int, String> {
@@ -107,14 +108,17 @@ class DispatcharrRepository(private val auth: DeviceAuth) {
             for (i in 0 until results.length()) {
                 val obj = results.getJSONObject(i)
                 val id = obj.getInt("id")
+                val uuid = obj.optString("uuid")
+                if (uuid.isEmpty() || obj.optBoolean("hidden_from_output")) continue
                 list.add(
                     Channel(
-                        name = obj.optString("name"),
-                        url = streamUrl(id),
+                        name = obj.optString("effective_name").ifEmpty { obj.optString("name") },
+                        url = streamUrl(uuid),
                         group = groups[obj.optInt("channel_group_id")].orEmpty(),
                         logo = "",
-                        tvgId = obj.optString("tvg_id"),
+                        tvgId = obj.optString("effective_tvg_id").ifEmpty { obj.optString("tvg_id") },
                         backendId = id,
+                        streamKey = uuid,
                     )
                 )
             }

app/src/main/java/dev/castarr/tv/playlist/Channel.kt

@@ -10,6 +10,7 @@ data class Channel(
     val logo: String,
     val tvgId: String = "",
     val backendId: Int = 0,
+    val streamKey: String = "",
 ) {
     fun toJson(): JSONObject = JSONObject()
         .put("name", name)
@@ -18,6 +19,7 @@ data class Channel(
         .put("logo", logo)
         .put("tvgId", tvgId)
         .put("backendId", backendId)
+        .put("streamKey", streamKey)
 
     companion object {
         fun fromJson(obj: JSONObject): Channel = Channel(
@@ -27,6 +29,7 @@ data class Channel(
             logo = obj.optString("logo"),
             tvgId = obj.optString("tvgId"),
             backendId = obj.optInt("backendId"),
+            streamKey = obj.optString("streamKey"),
         )
 
         fun listToJson(channels: List<Channel>): JSONArray {