Surgical UX/a11y fixes layered on top of the team's UI redesign,
keeping the teal palette and FilterBar architecture intact.
- TaskIndicator: NaN-safe progressPercentage (Number.isFinite +
clamp 0..100). No more "NaN%" when a task posts undefined progress.
- StreamingProgressBar: same NaN guard on the inline width calc.
- StatsBar: pluralize listings ("1 listing" / "30 listings"), drop
the duplicated "Avg:" label (now "Avg price" / "<n>/m²" / "Size"),
tabular-nums on every numeric.
- FilterPanel furnishing pills: aria-pressed + data-state for
screen readers and tests.
- ListView sort buttons: aria-pressed + aria-sort
(ascending/descending/none); listing count pluralizes
("1 property" / "N properties") with tabular-nums.
- Map: only fitBounds the FIRST time data loads (hasFittedOnceRef).
The previous lastDataLengthRef-based gate refit when results
went N → 0 → M, blowing away the user's pan/zoom.
Verified: tsc --noEmit clean, 125/125 vitest specs pass.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>