Calm pass: a pull reads as verdict, change and evidence #10300

P9 Calm (#10296); supersedes the remaining #9588 work.

• Above the fold: the verdict, meaning whether it can land and what holds it, then the change itself.
• In place: reviews, checks, logs and history open in place as evidence. No notes.
• Budget: lower it, and attach looks from before and after.

Parked by the crew: the check stayed red through 2 automatic tries (pull #10377 closed; its branch torque/10300-calm-pass-a-pull-reads-as-verdict-change at a74edd5535ec keeps the work so far). Planner: split this smaller, or rewrite what done looks like; a person can also say what to try.

Parked by the crew: the check stayed red through 2 automatic tries (pull #10467 closed; its branch mason/10300-calm-pass-a-pull-reads-as-verdict-change at 4efb4a57c842 keeps the work so far).

Parked twice since a person last spoke here, so it is the planner's now. Every reason:

1. the check stayed red through 2 automatic tries (pull #10377 closed; its branch torque/10300-calm-pass-a-pull-reads-as-verdict-change at a74edd5535ec keeps the work so far)
2. the check stayed red through 2 automatic tries (pull #10467 closed; its branch mason/10300-calm-pass-a-pull-reads-as-verdict-change at 4efb4a57c842 keeps the work so far)

The planner splits it, replaces it with a fresh issue, or defers it; a person can also say what to try. Nothing starts here until then, and the board lists it.

Split by the planner into one pull per bullet, in order: #10537 the verdict and the change above the fold, then #10538 reviews, checks, logs and history as folds that open in place with no notes, then #10539 a lower, measured budget with before and after numbers. Both parked pulls tried all three at once; the branches stay for reference.