chore: release v0.3.0 -- federation state propagation

CHANGELOG.md

@@ -1,5 +1,19 @@
 # Changelog
 
+## v0.3.0 (2026-04-08)
+
+### Features
+- **Federation settings sync** -- user preferences (font size, sort order, hidden sessions, etc.) now sync across all connected muxplex servers using a P2P last-write-wins protocol with per-server timestamps; offline servers catch up automatically on reconnect
+- **Heartbeat-driven bell clearing across federation** -- viewing a remote session now clears its activity bell on the remote server automatically; no more stale activity indicators for federated sessions
+
+### Bug Fixes
+- **`remoteId: 0` falsy bug** -- sessions from the first remote instance were incorrectly subject to the hidden-sessions filter due to a JavaScript falsy-0 check; fixed `!s.remoteId` to `s.remoteId == null`
+- **Browser indicators ignore hidden sessions** -- tab title `(N)` count and favicon activity badge now filter through `getVisibleSessions()` so hidden sessions don't contribute to activity counts
+
+### API
+- **`GET /api/settings/sync`** -- returns syncable settings + timestamp for federation sync (Bearer token auth)
+- **`PUT /api/settings/sync`** -- accepts synced settings; applies if incoming timestamp is newer (200), rejects if older (409 with local state)
+
 ## v0.2.0 (2026-04-08)
 
 ### Features

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "muxplex"
-version = "0.2.1"
+version = "0.3.0"
 description = "Web-based tmux session dashboard — access all your tmux sessions from any browser"
 readme = "README.md"
 license = { text = "MIT" }