af1d69ed4b
The human listed pulsation as first-class and the port drew nothing: the plate's focus record `ptbtn00f` was never reached, because press_start has no `buttons` and nothing is focused. That it LOOPS is measured -- the corpus timed the period four times (2.12 / 2.19 / 2.34 / 2.31 s) and you cannot measure a period unless the thing repeats. THE RULE I WAS GOING TO WRITE DIED IN THE CENSUS. The spinning ring is a rule in the renderer because it has a disc-wide check: 16 of 212 elements match its shape and all 16 are focus rings. The analogous shape for a pulse -- keyframes varying only in alpha, first alpha equal to last -- matches 82 OF 212, including ptcopyright, palogo_sqex, ptmsg and every _eff fade. A renderer rule on it would make the copyright notice pulse. Narrowed to focus records it matches exactly one distinct element, and a rule justified by n=1 is a special case wearing a rule's clothes. So it is a LOOKUP in authored/timing.json keyed <screen>/<element>, with the census recorded beside it so nobody widens it later. The period is 129 units -- the element's own group under the port's existing model: last timed keyframe t=105 plus the authored exit_ramp_units of 24. No new constant. 2.150 s at 60 units/s, 2.295 s at the ~28.1 fps the emulator presents, against measurements of 2.12-2.34. IT IS A CHOICE AND THE ALTERNATIVE IS STATED: restarting at the group's first keyframe (t=6) instead of 0 gives 123 units = 2.050 / 2.189 s, also inside the measured spread. Nothing separates them. t=0 is taken because it is where every other group starts -- consistency, not evidence. Verified the way the ring was, by bit-identity one period apart. 20 periods is 43.00 s = exactly 172 film frames: frames N and N+172 differ by 0-1/255, while the control a quarter-second off (43.25 s) differs by 58.7/255. On the held boot title the glow-box mean swings 26.0 <-> 37.7. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01N7FiFFFwbvG2uxdcEh8HyF
Authored decisions
Everything here is a decision we made, not something the disc said. It is
hand-written, committed, and survives a re-export — unlike export/, which is
regenerated wholesale and must never be hand-edited.
Every entry carries a why. When the RE agent decodes the real answer, delete
the entry and let the exporter emit it; that deletion is the measure of
progress.
See docs/FORMAT.md for the schemas and docs/BLOCKED.md for which HANDOFF
question each placeholder is standing in for.