0.3.0 — audit pass: schedule rearm, random Sonos track, MIT licence

Audit-driven cleanup pass. All changes are backwards-compatible; bumped to 0.3.0 because the volume of fixes is more than a patch warrants.

Fixed

• Schedule never rearmed after a natural fire. When the alarm ran end-to-end (ramp completes → music plays to fade-up → music completes), the coordinator dropped to IDLE but never called async_recompute_schedule. Result: sensor.<slug>_next_alarm kept pointing at the just-fired (past) time and no async_track_point_in_time was armed for the next day until the user poked a dependency. Same root cause covered the early-return branches of _async_on_music_start (player unavailable / no media). _set_state(STATE_IDLE) now triggers the recompute on every transition into IDLE, regardless of how IDLE was reached.
• Auto-dismiss timer was re-armed on every snooze resume. Each cycle restarted the timer at auto_dismiss_min from the resume moment, so three snoozes effectively extended auto-dismiss by 3 × snooze_min. The deadline is now captured at the first PLAYING transition and preserved across snooze cycles — N minutes after the alarm originally fired always means N minutes.
• Tapping the mode tile during snooze disarmed the alarm. The tile showed Music in M:SS and tapping disabled switch.<slug>_enabled. Mode-tile tap is now a no-op while the alarm is active (ramping, playing, or snoozing); Snooze / Dismiss / Cancel ramp are the explicit controls.
• Card instance-name was locale-fragile — it parsed the enabled-switch's friendly_name and stripped a literal "Enabled" suffix, which only works in English. sensor.<slug>_next_alarm now carries the user-given instance name as an instance_name attribute and the card reads it from there.
• parse_action_id accepted empty entry_ids. wake_alarm:snooze: was parsed as ("snooze", ""), which could never resolve to a coordinator. Now rejected.

Changed

• Multi-Sonos: random track-skip on every fire and snooze resume. Sonos shuffle reorders the queue but doesn't pick a random starting track, so every alarm and every snooze used to begin on the same track from the configured favourite. The music sequence now skips 1–4 tracks forward (media_next_track, random per fire) after the 5-second queue settle and before the fade, so the wake-up song is genuinely different each cycle. Single-player path is unchanged (it doesn't shuffle in the first place).
• Volume slider displays as percentage (0–100%) instead of the raw 0.0–1.0 fraction. The underlying number.<slug>_volume entity still stores 0.0–1.0; the card does the multiply/divide.
• Cancel-ramp button visible on the main view during ramping — used to be settings-only. Snooze / Dismiss are still always visible while active.
• Card ticker only runs during snooze. The 1Hz requestUpdate that drives the countdown used to run for the lifetime of every dashboard; it now starts when state transitions to SNOOZING and stops afterward.
• async_call_light_turn_on is now properly async (was a non-async def returning a coroutine — worked but read oddly).

Docs

• LICENSE is now an actual MIT licence instead of an empty file.
• BRIEF.md day-toggle entity IDs updated to the v2 d1_mon..d7_sun scheme.

Upgrading

HACS → Wake Alarm → ⋮ → Redownload → pick 0.3.0 → restart HA. From 0.2.1 onward the versioned card URL handles cache-busting automatically.