Session 7 handoff. check.sh green end to end, including both new stages.
STATUS now leads with the cost-aware mode decision, and the stale statements
that session 7 overturned are struck rather than left to be re-read as current:
- next-steps item 1 still announced "implement both display paths and pick per
frame" as a settled answer. Withdrawn, with the reason, and the part that did
hold up (report the distribution, not the mean) kept.
- the profile table's "machine" column reads as a CPU claim and is not one. It
is the bus. Both profiles target the same stock 10 MHz 68000 and neither
fits; the Super has SCSI at 10 MHz.
- the display-path section stopped at "68000 code copied a frame". It parses
one now, and the blit figures are no longer the display-path budget.
- the green-light section still described a 2-minute, three-stage check, and
did not warn that 10_pathmix_drift.py is SUPPOSED to exit non-zero.
Sharpened the one trap in the next session's first step: SKIP is not a
per-block constant. It costs 13.25 cycles inside an all-SKIP header byte and
~45 in a mixed one, so its price depends on its neighbours and a per-block
lagrangian cannot see that. Picking either number is wrong in a different
direction; the budget check can use the exact clustered cost function while
the per-block term only has to rank modes.
Claude-Session: https://claude.ai/code/session_01194oWYW8DQXK1SZ2DnChW6
prosolis
cb05e77a42