Y2Linux 1.0 Beta 7.2 (Baseline 63)

Status: PUBLISHED as GitHub release baseline-63 (2026-10-16). Release 1.0.0-beta.7.2, Reborn 1.0.0-beta.7.2, kernel 6.18.56-y2linux-1.0.0-beta.7.2, update sequence 5900, Linux 78b548b, Reborn 846da2d, git tag baseline-63 in both repositories. Built with tools/production/release.py in 122 s: container suite 743 OK, all seal checks PASS, no MediaTek firmware in any image. Milestone audit: BETA-7.2 in roadmap-gap-audit.

Image	SHA-256
BOOTIMG	`498a26488000935b7812a61121cc809158e92aa07f25624805a64b89eb0fa865`
Y2ROOT	`ac93c8ce42a83e2c1421ff7f2b4770034483639ce4c3b8541c7fff93c8e0f31d`
RECOVERY	`996f62eafbc662bbc0b1b40a763a5c144712dbe8e7a16dfdbe77ca3bf97671ee`
Y2DATA (no SSH key)	`4cf9d40d85717e8bdf7a4a380f83ee3671d6b6c0baa1765040f34c7a57a11873`

Since Beta 7.1 (Reborn)

Owner (2026-10-16): more animation to make the UI feel polished and responsive, at 60 fps; the Now Playing progress as a "cool" wave, not a perfect sine. Reborn 634f83a.

Part	Detail
Motion system	`crates/reborn-ui/src/motion.rs`: per-key eased values (exponential, ≈125–190 ms), retargetable at any moment, frame-rate independent, settled values stop all redrawing. Anything moving keeps Cover Flow's 60-fps path (12-ms frame gap, Interactive CPU lease). Off in previews and tests (`Ui::ui_motion`); `reborn-preview --motion` captures frames mid-animation.
Lists and focus	Shared components mark moving quads (`canvas::Moving`): the focus row and Home's marker glide; Artists, Songs, Genres, search, Up Next, Folders, Playlists and the radio lists scroll smoothly (one row more on each side, hidden at rest; the status bar stays above); a long wheel jump glides only its last row.
Screens, menus, messages	New screens slide in from the right, Back slides out (200 ms, ease-out); sheets rise over a fading scrim; dialogs and toasts fade in; switches slide their knob and blend their colour.
Now Playing	The position moves on between reports; the progress is a travelling wave (two sines, breathing height, tapered ends, opaque 2.6-px strokes with a faint 5-px edge) that lies flat when paused; a new song fades in; the play button dips on a change. Continuous 60 fps while playing and visible.

Host evidence: 487 Reborn tests (new: motion springs, wave while playing / flat when paused, focus glide, slide with one focus target, long jumps), strict Clippy, fmt; mid-animation captures compared by eye. Device frame rate not yet measured.

Device frame rate (measured on Beta 7.3, 2026-10-16)

Sampled with the cable in (Beta 7.3 removed the covering computer screen) by polling rebornctl metrics and status every 0.5 s for 4 minutes while the owner navigated (archive out/deep-sleep-final/evidence/20261016/157-beta73-fps-sample, fps2.jsonl, sampler fps-sampler.py):

Situation	Result
Motion (113 busy half-seconds: focus glide, slides, menus, playlists)	median 62 fps, up to 66 (the panel's ≈64 Hz); frames vsync-paced at ≈14.7 ms; 0 missed frames
Now Playing while playing (wave), 22 s	steady 64–65 fps, every half-second
Continuous wheel on Home, 6 s	steady 64 fps (≈8 ms CPU per frame)
At rest (Home, Now Playing paused)	0 fps: nothing is redrawn
Isolated calm-rate frames on Home	up to 23 ms CPU, at most a few per second, never during motion

Not yet sampled: smooth scrolling in the Songs list (the owner's path did not pass it); battery while Now Playing plays with the screen on.

Device checks owed (after the owner's over-the-air install)

Frame rate: measured (above); the Songs list scroll is still to be sampled.
The wave travels while playing and lies flat on pause; fast wheel scrolling stays immediate.
Battery: Now Playing visible while playing redraws continuously; check the CPU lease ends when the screen is off.
Still open: Beta 7.1 checks (USB screen, update answer, automatic time zone), Beta 7 checks.

Known gaps

FM radio (Beta 8); no 12/24-hour switch; sleep ≈7.8–9.4 mA vs stock ≈1.3 mA; Bluetooth range hardware-limited; no headphone-jack detection.