docs: update roadmap, tasks, and backlog for v2.3.0

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

ROADMAP.md

@@ -159,3 +159,22 @@
 - [ ] Slack adapter via Socket Mode WebSocket
 - [ ] Mattermost adapter via WebSocket API
 - [ ] Bluesky adapter via AT Protocol firehose + REST API
+
+## v2.3.0 -- Mumble Voice + Multi-Bot (done)
+
+- [x] pymumble transport rewrite (voice + text)
+- [x] Music playback: play/stop/skip/prev/queue/np/volume/seek/resume
+- [x] Voice ducking (auto-lower music on voice activity)
+- [x] Kept track library with metadata (!keep, !kept, !play #N)
+- [x] Smooth fade-out on skip/stop/prev, fade-in on resume
+- [x] In-stream seek with pipeline swap (no task cancellation)
+- [x] Multi-bot Mumble: extra bots via `[[mumble.extra]]`
+- [x] Per-bot plugin filtering (only_plugins / except_plugins)
+- [x] Voice STT (Whisper) + TTS (Piper) plugin
+- [x] Configurable voice profiles (voice, FX, piper params)
+- [x] Rubberband pitch-shifting via CLI (Alpine ffmpeg lacks librubberband)
+- [x] Bot audio ignored in sound callback (no self-ducking, no STT of bots)
+- [x] Self-mute support (mute on connect, unmute for audio, re-mute after)
+- [x] Autoplay shuffled kept tracks on reconnect (silence detection)
+- [x] Alias plugin (!alias add/del/list)
+- [x] Container management tools (tools/build, start, stop, restart, nuke, logs, status)