ReportStrip

ReportStrip has no keys of its own and nothing in it is focusable: it is read, not operated.

An item reads "Live 1 046", and one with no count "No signal Unknown".

The root is a list with no name of its own and no live region; a caller where the strip stands alone names it with aria-label or aria-labelledby, which reach the root with the rest props: its five words say what it holds, as VehicleDotLegend's list has no name of its own (its CR-7), and a name of its own would be a new owned string in four locales for a list a heading beside it already names; the counts change every few seconds, which would flood a screen reader, and Accessibility asks that only changes of state be announced, in the screen's own polite live region.

What axe won't catch, from the contract, each with how this component meets it:

• Everything the eye is told, the ear is told, for every shape each prop accepts: each dot's state is told to the ear by the word beside it, through VehicleDotLabel; each count is read after its word, and an unknown one as "Unknown" in place of the hidden "—" (CR-5). No colour carries meaning: the dots are one ink, the text's (CR-3), and no signal's grey comes with its cut and its word.
• Every landmark and named region has an accessible name: none here; the strip is a list, not a landmark or region, and a caller where it stands alone names it with aria-label or aria-labelledby (CR-11).
• Every default label can be overridden: liveLabel, ageingLabel, estimatedLabel, timetableOnlyLabel, noSignalLabel and unknownLabel.
• Every shape the type accepts renders, in every variant: counts with all five states, with some left out, null, NaN and Infinity (unknown), with 0 (a count) and with a count past a thousand (grouped); every *Label string replaces only its own state's word, and an undefined one keeps the locale's. ReportStrip takes no ReactNode.
• A hidden copy kept for animation is aria-hidden, and a collapsed region is inert: none here; nothing animates or collapses. The dots and an unknown count's "—" are aria-hidden because words beside them say them, not for animation.
• Native semantics first: a <ul> of <li>s, each with a VehicleDotLabel and a <span> of digits; no ARIA of the pattern's own beyond the "—"'s aria-hidden.
• Focus moves in reading order and returns on close: nothing takes focus or opens; Tab passes the strip by.
• Every target is at least size.target-min square: no target; nothing in the strip is pressed.
• Loops stop when the system asks for less motion: none here; nothing moves, and a count changes its text without a transition.

ReportStrip owns no new string: every word it shows or announces is a key packages/perron/src/locale/en.ts already has, the five state words VehicleDotLabel shows and the "Unknown" Stat added, and the counts are digits, which expectOwnedStrings passes.

For a caller using the pattern, with the reason. Each row is a rule: a must row's Don't is never right, a should row's needs a reason, and Checked by says what catches the Don't in a caller's code.