Overlap fix: stop circles get circle-sort-key (k) and numbers get
symbol-sort-key (-k) with text-allow-overlap:false — the TOP circle and
the DISPLAYED number are now the same feature; the underneath pin's
number is culled instead of bleeding over its neighbor.
Hover-to-front: three "active" layers (line/stops/numbers, thicker line,
all numbers shown) sit above everything, filtered by rid; mousemove on a
route/stop (or hovering a tech chip / legend item) calls setActive(rid)
→ the whole tournée pops to the foreground; cleared 160ms after leave.
Exposed setActive() alongside fitTo/fitAll. Benefits both maps (review +
Tournées) since it's the shared RouteMap.
Verified: Houssam's magenta route renders on top on chip hover; no more
double numbers at overlapping stops.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>