XingfenD 9965fd73ee docs: add the collision constraint to the GameHost a11y backlog item
The P13 final review logged GameHost's degraded-link badge (paper on accent =
3.2590 in light, below the 4.5 required for an 11px bold label) to the
accessibility polish batch. The obvious one-line fix — switching the badge to
bg-accent-ink — was falsified by measurement before it could be logged as if it
worked: light paper on accent-ink does pass at 4.8700, but accent and
accent-ink are only 1.4943 apart in light, and the badge shares the showcase
title bar with the phase status dot whose 'load failed' state already uses
bg-accent-ink. Recolouring the badge would collapse 'degraded to external link'
and 'load failed' into one visual signal, trading a contrast defect for a
semantic one.

Recorded as a design decision rather than a one-line change, so the next batch
does not walk into it. This extends the P12 lesson that a parked backlog item
must be falsified or confirmed before being implemented: what needs falsifying
is not only whether the item is worth doing, but whether the obvious way to do
it works.
2026-10-03 08:14:52 +08:00
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