v0.5.0

Compatibility changes

• Plain CLI sessions no longer automatically select devices named DJS- as the test target. Pass --target PLAYER|IP for /api/unit, unit_* events and unit scenarios. Existing Python defaults and the explicit emulator adapter keep their previous target behavior.
• Clearing Events no longer resets event timestamps. Times remain relative to session start, matching Network capture. Event numbering still restarts on clear. Use session and generation to distinguish histories.

MASTER, SYNC and player controls

• Serialize automatic MASTER handoffs with explicit requests and skip device snapshots when no handoff is needed.
• Reconcile early MASTER commands with the sender's late status through a coordinated handoff.
• Decode acceptance in standard-length master takeover replies.
• Add opt-in SYNC and MASTER commands on discovered player cards.
• Hand a stopped virtual master's role to an eligible playing, synced follower.
• Add opt-in fader-start transport controls for discovered players without enabling the simulated mixer.
• Explain that hardware fader-start commands require a stopped player at cue to start and a playing player to return to cue.
• Keep delayed simulated-mixer packets from restoring on-air state after the mixer is switched off.
• Make the demo's observed synced player follow master tempo and bar phase, with matching packet-log values.

Observation and diagnostics

• Add an announced observer mode without simulated playback decks or database servers.
• Clear an observer's number-conflict warning when the conflict ends, without discarding other network errors.
• Add continuous UDP capture, a full retained-capture export and explicit view limits.
• Keep Events and Network on one session clock and reset replayed history on reconnect.
• Report external-player state changes and allow an explicit test target without auto-selecting a DJS.
• Record incoming database queries for hardware troubleshooting.
• Decode mixer tempo status and CDJ-3000 precise positions without inventing beat grids.
• Query loaded-track metadata on demand and serve meaningful synthetic tempo and duration fields.
• Export full packet payloads and replay captures offline with seeded loss, delay and jitter.

Platform support and reliability

• Add native macOS interface and MAC discovery, a dedicated CI job and Ethernet/VM bridge setup guidance.
• Print a usable browser URL with the actual port and token, including in phone mode.
• Bound listener waits during shutdown and use a configured localhost address for the Mac mixer endpoint.
• Add explicit network worker shutdown, socket cleanup and cancellable handoff timers.
• Isolate CLI sleep mocking so checks cannot interrupt other network workers.
• Make the startup-error test own its conflicting port without a timing-sensitive helper process.