Adds the three big "options" UX wins from Direction B:
1. Route variants (Fastest / Scenic / Cheapest)
- Grok prompt now returns a top-level variants[] summary with
drive/charge/cost/distance/pros for each variant, plus a
selectedVariant indicating which one the stops reflect.
- VariantStrip renders under the top bar with selected-state
styling, tone-coloured highlight (red/green/blue) on the most
relevant stat, and 3-5 pros pills.
- Clicking a variant fires /api/chat with selectedVariant=<id> so
Grok re-plans with that variant's bias. A "switching" state
disables the strip while the request is in flight.
- The chat route accepts selectedVariant ('fast'|'scenic'|'cheap')
and the GrokHeadlessClient threads it through both the local CLI
and xAI API paths.
2. While here (food / do / see / shop / rest)
- Every Supercharger, destination-charger and hotel stop now
returns a nearby[] array with category/icon/name/detail.
- Expanded stop card has tabs (All / Food / Do / See) — tabs
auto-hide when no items in that category. Two-column grid of
named places with walk-time + rating, e.g. "M&S Foodhall · 1 min
walk · 4.3★ · sandwiches".
3. Charger swap block
- Every charging stop now returns chargerOptions[] with the
current pick + 1-3 alternatives at the same location, each with
network (Tesla/Ionity/Allego/Fastned/BP Pulse), stalls, kW,
pricePerKwh, detourMin and an optional badge (Faster/Cheaper/
More stalls/Newer).
- ChargerSwapBlock shows the current charger as a red-tinted
header row that expands to reveal alternatives with stats and a
Use button per row.
Renamed the existing AlternativeStop UI label from "alternative(s)"
to "location alternative(s)" so it's clear when the user is swapping
the stop *location* vs swapping the *charger at the same location*.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
tony
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