music: add per-guild queue with now/next/last, skip and queue

Tracks are queued in memory per guild, defaulting to append (last).
Playback auto-advances on TrackEvent::End/Error with a per-track token
so manual stops and skips cannot double-advance. /music queue shows the
current track followed by pending items. /stop clears the queue.

Cron audio now goes through the same MusicState instead of poking the
track-handle map directly.

1 files changed, 15 insertions, 2 deletions

diff --git a/src/lang.rs b/src/lang.rs
index 4bba9b5..de6d23f 100644
--- a/src/lang.rs
+++ b/src/lang.rs
@@ -91,8 +91,6 @@ pub fn fmt_math_result(r: &str) -> String {
 pub const L_MUSIC_NEED_NAME: &str = "Daj mi nazwę pliku, URL albo plik";
 pub const L_MUSIC_NO_AUDIO_ON_CP: &str = "Brak powiązanego audio na copyparty";
 pub const L_MUSIC_NO_URL_IN_RESULT: &str = "Wynik nie ma URL";
-pub const L_MUSIC_CANT_COMPRESS_LIVE: &str =
-    "Nie można skompresować transmisji na żywo, odtwarzam normalnie";
 pub const L_MUSIC_STOPPED: &str = "wyszed";
 pub const L_MUSIC_NO_AUDIO_ATTACHMENTS: &str = "Brak plików audio w wiadomości";
 pub const L_VOICE_USER_NOT_IN_VC: &str = "You are not in a voice channel";
@@ -122,6 +120,21 @@ pub fn fmt_music_search_failed(e: &dyn std::fmt::Display) -> String {
 pub fn fmt_music_playing(name: &str) -> String {
     format!("Grajcowanie: `{name}`")
 }
+pub const L_MUSIC_QUEUE_EMPTY: &str = "Kolejka jest pusta";
+pub const L_MUSIC_QUEUE_HEADER: &str = "**Kolejka:**";
+pub const L_MUSIC_SKIPPED: &str = "Pominięto";
+pub fn fmt_music_queued(name: &str, position: usize) -> String {
+    format!("W kolejce (#{position}): `{name}`")
+}
+pub fn fmt_music_track_failed(name: &str, e: &dyn std::fmt::Display) -> String {
+    format!("Nie udało się odtworzyć `{name}`: `{e}`")
+}
+pub fn fmt_music_queue_current(name: &str, who: &str) -> String {
+    format!("▶ `{name}`{who}")
+}
+pub fn fmt_music_queue_item(index: usize, name: &str, who: &str) -> String {
+    format!("{index}. `{name}`{who}")
+}
 pub fn fmt_voice_joined(cid: &dyn std::fmt::Display) -> String {
     format!("Dołączon <#{cid}>")
 }