v0.18.0 — it listens, it remembers, and it knows who is playing

Milestone release: it listens, it remembers, and it knows who is
playing. The first published release since v0.13.0 — v0.14.0 was
tagged and built but never published, and everything it described is
in here, so it is skipped rather than shipped late.

BeatByte can be sung. A whole vocal path: it reads the sung line
off a song into a vocal chart, opens the microphone, and judges pitch
the way music works rather than the way a meter does — in cents
against the note being held, with loudness never a reward. A karaoke
run plays the backing instead of the record, the words meet the notes
on one clock, and a sung phrase lights the room. MIC OFFSET
calibrates the path; one microphone stream serves both the stage
monitors and vocal play.

Every run leaves evidence. beatbyte-telemetry is the gameplay
blackbox (ADR-0018):
a local SQLite store, written through a bounded queue off the frame
thread, recording what the chart expected, what the player did, how
the engine read it and how it was judged — plus the logical action
stream, which is the only evidence of an input the engine then did
nothing with. Nothing derivable is stored twice, a dropped event is
never silent, and each chart version now carries a sidecar of what
the analysis said at its notes, so "was that a weak onset in a loud
passage?" stays answerable. beatbyte-cli telemetry reads it. It
never leaves the machine and nothing reads it back into the game.

A roster, a history, and a hundred achievements. Runs are filed
under whoever is playing; four views show one player over time and
against the others, plotted in the game's own hand. A hundred
achievements across ten categories, twelve secret until earned, every
one re-derived from the whole play log — so one added later unlocks
retroactively, with the date it really happened.

Add a song by name. Press D, type it: BeatByte looks the song
up, judges the recordings it finds on their length and their own
titles, fetches the best one, measures it, pulls the lyrics and
charts it — filed under its own name rather than a raw query.

The room became a room. The measured level runs a light show —
the ceiling strobes white while it is loud, comets are thrown along
the strips, sparks die by dimming — the PA stands where a PA stands
with monitors that read the real level, the deck is sealed and lit to
its back corners, and fog flows across it. Hits light real fire.

And the analysis follows the music. A beat grid tracked through
the song rather than one constant BPM, bar lines from the Beat This!
meter, repeated sections charted identically, and redesign to move
a carried chart onto the better grid. Every import gets a [GS]
study twin in the background, and a blind taste test plays one chart
version against another without saying which is which.

The last thing in, and the one that needed eyes: a star-power
phrase landing whole is now an impact — the neck takes the energy in,
the ceiling flashes, the screen catches it, one impulse gone inside
half a second. It shipped twice too bright with every automatable
check green, and a picture said so in a second.

Everything above is in the sections below, version by version.

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Downloads — macOS: the .dmg for your chip (Apple silicon = aarch64). Linux: the .AppImage. Windows: the .zip. The .tar.gz archives are the portable layout for all three.

Verified before publishing: gate green (fmt, clippy -D warnings, test, check, rustdoc), 1555 tests, autopilot 297 perfect / 0 miss / 0 overstrum, and this release's own macOS arm64 artifact downloaded, unpacked and smoke-tested from a neutral working directory — plus the DMG mounted and its app checked at 0.18.0.

Full Changelog: v0.13.0...v0.18.0