Timeline now shows the driving distance and duration between every
consecutive pair of stops, taken from real OSRM road routes (not Grok
estimates). Top stat bar and per-day headers also use the live totals
so they update immediately as the itinerary changes.
Grok now returns 1-3 alternative picks for each Supercharger and
hotel stop, each with deltaKm/deltaMin vs the chosen pick and a short
reason explaining the trade-off. The Swap (n) button on each card
expands an inline list of alternatives; clicking one swaps the stop
in place. The previously-chosen stop is kept in the alternatives
list with inverted deltas so the user can swap back. The map +
polylines + stat bar all recompute automatically.
Other tweaks:
- haversine fallback when OSRM is unreachable so legs still show
approximate metrics in offline / degraded mode.
- Leg geometry storage moves from raw polyline[] to typed Leg[] with
per-leg distance/duration/fromId/toId.
- Stop schema gains alternatives[]; client normalization filters out
alternatives missing lat/lng.
- Day cards widened (340 → 360px); timeline pane grew 280 → 340px
with vertical scroll so swap panels don't clip.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
tony
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