feat(transit): real itineraries — alternatives, leg-by-leg, mode badges

Transit showed one cryptic summary line and threw away 3 of 4 itineraries.
Surface what the MOTIS/Transitous response already contains.

routing.ts: TransitLeg gains headsign, agencyName, from/to track, stop count,
realTime and distance; RouteResult gains transitOptions (all itineraries,
fastest first). fetchTransitRoute maps every itinerary (the API returns more
than numItineraries).

RouteDialog:
- Alternatives row — tap to switch; a dedicated effect redraws the map from the
  selected itinerary, so switching never re-queries the service.
- Leg-by-leg itinerary: coloured line badge, headsign, board/alight stop + clock
  times, platform track, N stops, operator, and a 'live' badge only when the
  feed is realtime.
- Summary now reflects the selected option and shows the option count.
- 'Whole route' re-fit follows the selection.

Also clears the 2 pre-existing eslint warnings (unused StatusIcon/nip19) so the
documented zero-warning baseline holds.

Docs: AGENTS.md transit-detail note (incl. Transitous 403s a generic UA).

AGENTS.md

@@ -338,6 +338,22 @@ session with **no other memory of this project**. So:
   **< 2 min old**; the blocking "Finding your location…" overlay shows only when
   there is no seed (with a seed it refines silently via a corner chip). The map
   "Near Me" button also flips the sort to `proximity`.
+  - **Transit detail (2026-10-01):** Transitous returns **more itineraries than
+    requested** (`numItineraries: 4` → we saw 9), so `fetchTransitRoute` now maps
+    them ALL into `RouteResult.transitOptions` (`transit` = index 0). `RouteDialog`
+    shows alternatives (tap to switch — a separate effect redraws the map, **no
+    re-query**) and a **leg-by-leg itinerary**: coloured line badge, headsign
+    (`→ S Strausberg Nord`), board/alight stop + clock times, platform `track`
+    when present, `N stops` (`intermediateStops.length + 1`), operator
+    (`agencyName`), and a **live** badge only when `realTime` is true. Mode →
+    icon/colour is MOTIS's own `mode` (`BUS` 🚌, `TRAM` 🚊, `METRO`/`SUBWAY` 🚇,
+    `RAIL*`/`REGIONAL_RAIL`… 🚆, `FERRY` ⛴️). ⚠️ MOTIS labels a German S-Bahn
+    `METRO` (verified live) — that's the feed's own classification; don't
+    "correct" it heuristically. ⚠️ Transitous **403s a generic User-Agent**
+    ("Generic user-agent headers are not allowed") — the browser sends its own so
+    the app is fine, but a Node/curl probe must set a `User-Agent`. Still absent:
+    depart/arrive-by time picker, per-mode filters (bus/train), stop departure
+    boards, fares.
   - ⚠️ **`RouteDialog` had a total-failure bug (fixed 2026-09-27), don't regress:**
     (1) its Leaflet map is inside Radix Dialog content, which mounts AFTER the
       component's first effect pass, so a `mapDivRef.current` guard was null,

src/components/CoordinatorSettingsCard.tsx

@@ -1,18 +1,14 @@
 import { useEffect, useState } from 'react';
 import {
-  Activity,
   AlertTriangle,
-  CheckCircle2,
   Copy,
   ExternalLink,
-  Loader2,
   QrCode,
   RefreshCw,
   ScanLine,
   Server,
   Smartphone,
   Trash2,
-  XCircle,
 } from 'lucide-react';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
@@ -102,16 +98,6 @@ export function CoordinatorSettingsCard() {
   };
 
   const meta = STATUS_META[status];
-  const StatusIcon =
-    status === 'checking'
-      ? Loader2
-      : status === 'online'
-        ? CheckCircle2
-        : status === 'stale'
-          ? AlertTriangle
-          : status === 'idle'
-            ? Activity
-            : XCircle;
 
   return (
     <div className="space-y-4">

src/components/RouteDialog.tsx

@@ -35,6 +35,7 @@ import {
   skateTime,
   type TravelMode,
   type RouteResult,
+  type TransitItinerary,
 } from '@/lib/routing';
 
 // ─── Transit presentation helpers ────────────────────────────────────────────
@@ -79,6 +80,19 @@ function transitModeEmoji(mode: string): string {
   }
 }
 
+/** Leading emoji for a whole itinerary — its first vehicle leg, else walking. */
+function transitPrimaryEmoji(it: TransitItinerary): string {
+  const vehicle = it.legs.find((l) => l.mode !== 'WALK' && l.mode !== 'BIKE');
+  return transitModeEmoji(vehicle?.mode ?? 'WALK');
+}
+
+/** Seconds between a leg's start and end (0 when either time is missing). */
+function legDurationS(leg: TransitItinerary['legs'][number]): number {
+  if (!leg.startISO || !leg.endISO) return 0;
+  const ms = Date.parse(leg.endISO) - Date.parse(leg.startISO);
+  return Number.isFinite(ms) && ms > 0 ? Math.round(ms / 1000) : 0;
+}
+
 interface RouteDialogProps {
   open: boolean;
   onOpenChange: (open: boolean) => void;
@@ -228,12 +242,29 @@ export function RouteDialog({
   const [error, setError] = useState<string | null>(null);
   const [locError, setLocError] = useState<string | null>(null);
 
+  // Which transit alternative is selected (index into route.transitOptions).
+  // Reset to 0 whenever a new transit route is fetched.
+  const [transitIndex, setTransitIndex] = useState(0);
+  const selectedTransit = useMemo(() => {
+    if (mode !== 'transit') return null;
+    const opts = route?.transitOptions;
+    if (opts && opts.length > 0) return opts[Math.min(transitIndex, opts.length - 1)] ?? null;
+    return route?.transit ?? null;
+  }, [mode, route, transitIndex]);
+
+  // All alternatives (falling back to a single option for older results).
+  const options = route?.transitOptions ?? (route?.transit ? [route.transit] : []);
+
   /** Re-fit the map to the whole route (after tapping a step pans it away). */
   const fitRoute = useCallback(() => {
     const map = mapRef.current;
-    if (!map || !route || route.coordinates.length < 2) return;
-    map.fitBounds(L.latLngBounds(route.coordinates), { padding: [48, 48], maxZoom: 16 });
-  }, [route]);
+    if (!map) return;
+    const coords = selectedTransit
+      ? selectedTransit.legs.flatMap((l) => l.coordinates)
+      : route?.coordinates;
+    if (!coords || coords.length < 2) return;
+    map.fitBounds(L.latLngBounds(coords), { padding: [48, 48], maxZoom: 16 });
+  }, [route, selectedTransit]);
 
   // A new route (mode/origin change) invalidates the tapped-step focus and the
   // once-only voice/haptic announcements.
@@ -611,6 +642,7 @@ export function RouteDialog({
         if (cancelled) return;
         setCachedAge(null);
         setRoute(result);
+        setTransitIndex(0);
         if (mode !== 'transit') saveRoute(dest, mode, result);
 
         const map = mapRef.current;
@@ -619,24 +651,10 @@ export function RouteDialog({
             routeLayersRef.current.remove();
             routeLayersRef.current = null;
           }
-          const group = L.layerGroup().addTo(map);
-
-          if (result.transit) {
-            // Public transport: draw each leg — walking dashed grey, transit
-            // legs solid and coloured by mode.
-            for (const leg of result.transit.legs) {
-              if (leg.coordinates.length < 2) continue;
-              const isWalk = leg.mode === 'WALK';
-              L.polyline(leg.coordinates, {
-                color: isWalk ? '#9ca3af' : transitLegColor(leg.mode),
-                weight: isWalk ? 3 : 5,
-                opacity: isWalk ? 0.7 : 0.9,
-                dashArray: isWalk ? '4 6' : undefined,
-                lineJoin: 'round',
-                lineCap: 'round',
-              }).addTo(group);
-            }
-          } else {
+          // Transit legs are drawn by the effect just below, so switching
+          // between alternatives doesn't re-query the transit service.
+          if (!result.transit) {
+            const group = L.layerGroup().addTo(map);
             L.polyline(result.coordinates, {
               color: '#ccff00',
               weight: 5,
@@ -644,11 +662,10 @@ export function RouteDialog({
               lineJoin: 'round',
               lineCap: 'round',
             }).addTo(group);
-          }
-
-          routeLayersRef.current = group;
-          if (result.coordinates.length > 0) {
-            map.fitBounds(L.latLngBounds(result.coordinates), { padding: [48, 48], maxZoom: 16, animate: false });
+            routeLayersRef.current = group;
+            if (result.coordinates.length > 0) {
+              map.fitBounds(L.latLngBounds(result.coordinates), { padding: [48, 48], maxZoom: 16, animate: false });
+            }
           }
         }
       } catch (err) {
@@ -705,6 +722,35 @@ export function RouteDialog({
     };
   }, [open, effectiveOrigin, dest, mode]);
 
+  // ─── Draw the selected transit itinerary (redraws when an alternative is
+  //     chosen — no re-query). Walking legs dashed grey, vehicles solid. ──────
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map || !selectedTransit) return;
+    if (routeLayersRef.current) {
+      routeLayersRef.current.remove();
+      routeLayersRef.current = null;
+    }
+    const group = L.layerGroup().addTo(map);
+    for (const leg of selectedTransit.legs) {
+      if (leg.coordinates.length < 2) continue;
+      const isWalk = leg.mode === 'WALK';
+      L.polyline(leg.coordinates, {
+        color: isWalk ? '#9ca3af' : transitLegColor(leg.mode),
+        weight: isWalk ? 3 : 5,
+        opacity: isWalk ? 0.7 : 0.9,
+        dashArray: isWalk ? '4 6' : undefined,
+        lineJoin: 'round',
+        lineCap: 'round',
+      }).addTo(group);
+    }
+    routeLayersRef.current = group;
+    const coords = selectedTransit.legs.flatMap((l) => l.coordinates);
+    if (coords.length > 0) {
+      map.fitBounds(L.latLngBounds(coords), { padding: [48, 48], maxZoom: 16, animate: false });
+    }
+  }, [selectedTransit]);
+
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
       {/* App-like shell. VISUAL ORDER is set with flex `order` utilities, not DOM
@@ -921,26 +967,27 @@ export function RouteDialog({
               <AlertTriangle className="h-4 w-4 shrink-0" />
               <span>{error}</span>
             </div>
-          ) : route?.transit ? (
+          ) : mode === 'transit' && selectedTransit ? (
             <div className="w-full space-y-2">
               <div className="flex items-center gap-3">
-                <div className="text-2xl leading-none">🚇</div>
+                <div className="text-2xl leading-none">{transitPrimaryEmoji(selectedTransit)}</div>
                 <div className="min-w-0">
                   <div className="text-lg font-black tabular-nums">
-                    {formatClock(route.transit.departISO)} → {formatClock(route.transit.arriveISO)}
+                    {formatClock(selectedTransit.departISO)} → {formatClock(selectedTransit.arriveISO)}
                   </div>
                   <div className="text-xs text-muted-foreground">
-                    {formatDuration(route.transit.durationS)} ·{' '}
-                    {route.transit.transfers === 0
+                    {formatDuration(selectedTransit.durationS)} ·{' '}
+                    {selectedTransit.transfers === 0
                       ? 'direct'
-                      : `${route.transit.transfers} transfer${route.transit.transfers > 1 ? 's' : ''}`}
+                      : `${selectedTransit.transfers} transfer${selectedTransit.transfers > 1 ? 's' : ''}`}
+                    {options.length > 1 && ` · ${options.length} options`}
                     {routing && <Loader2 className="ml-1 inline h-3 w-3 animate-spin" />}
                   </div>
                 </div>
               </div>
-              {route.transit.legs.some((l) => l.mode !== 'WALK') && (
+              {selectedTransit.legs.some((l) => l.mode !== 'WALK') && (
                 <div className="flex flex-wrap gap-1">
-                  {route.transit.legs
+                  {selectedTransit.legs
                     .filter((l) => l.mode !== 'WALK')
                     .map((l, i) => (
                       <span
@@ -1062,6 +1109,120 @@ export function RouteDialog({
           </div>
         )}
 
+        {/* Transit itinerary: alternatives + a real leg-by-leg breakdown — all
+            from the same MOTIS response (nothing extra is fetched). */}
+        {!following && mode === 'transit' && selectedTransit && (
+          <div className="border-t bg-muted/20">
+            {options.length > 1 && (
+              <div className="flex gap-1.5 overflow-x-auto px-4 pt-3">
+                {options.map((opt, i) => {
+                  const active = i === transitIndex;
+                  const modes = [...new Set(
+                    opt.legs
+                      .filter((l) => l.mode !== 'WALK' && l.mode !== 'BIKE')
+                      .map((l) => transitModeEmoji(l.mode)),
+                  )];
+                  return (
+                    <button
+                      key={`${opt.departISO}-${i}`}
+                      type="button"
+                      onClick={() => setTransitIndex(i)}
+                      className={cn(
+                        // `min-h-0` beats the app-wide 44px mobile touch-target rule.
+                        'flex min-h-0 shrink-0 flex-col items-start gap-0.5 rounded-xl border px-2.5 py-1.5 text-left transition-colors',
+                        active
+                          ? 'border-[#ccff00]/60 bg-[#ccff00]/10'
+                          : 'border-white/10 bg-white/[0.03] hover:border-white/25',
+                      )}
+                    >
+                      <span className="text-xs font-black tabular-nums text-white">
+                        {formatClock(opt.departISO)}–{formatClock(opt.arriveISO)}
+                      </span>
+                      <span className="flex items-center gap-1 text-[10px] text-muted-foreground">
+                        <span aria-hidden>{modes.join('')}</span>
+                        {formatDuration(opt.durationS)} ·{' '}
+                        {opt.transfers === 0
+                          ? 'direct'
+                          : `${opt.transfers} transfer${opt.transfers > 1 ? 's' : ''}`}
+                      </span>
+                    </button>
+                  );
+                })}
+              </div>
+            )}
+
+            <p className="flex items-center gap-2 px-4 pt-3 text-[10px] font-black uppercase tracking-widest text-muted-foreground">
+              Itinerary
+              <span className="rounded-full bg-white/10 px-1.5 py-0.5 text-[9px] tabular-nums">
+                {selectedTransit.legs.length}
+              </span>
+            </p>
+            <ol className="max-h-72 space-y-1 overflow-y-auto px-4 pb-2 pt-1.5">
+              {selectedTransit.legs.map((leg, i) => {
+                const isFoot = leg.mode === 'WALK' || leg.mode === 'BIKE';
+                const dur = legDurationS(leg);
+                const startClock = leg.startISO ? formatClock(leg.startISO) : '—';
+                const endClock = leg.endISO ? formatClock(leg.endISO) : '—';
+                return (
+                  <li
+                    key={`${leg.mode}-${leg.line}-${i}`}
+                    className="flex min-h-0 items-start gap-2 rounded-lg px-2 py-1.5"
+                  >
+                    <span className="mt-px w-5 shrink-0 text-center text-base leading-none" aria-hidden>
+                      {transitModeEmoji(leg.mode)}
+                    </span>
+                    <div className="min-w-0 flex-1">
+                      <div className="flex flex-wrap items-center gap-x-2 gap-y-0.5">
+                        {!isFoot && (
+                          <span
+                            className="inline-flex items-center rounded-md px-1.5 py-0.5 text-[11px] font-black text-black"
+                            style={{ background: transitLegColor(leg.mode) }}
+                          >
+                            {leg.line ?? leg.mode}
+                          </span>
+                        )}
+                        <span className="text-xs font-bold text-white">
+                          {isFoot
+                            ? leg.mode === 'BIKE' ? 'Ride' : 'Walk'
+                            : leg.headsign
+                              ? `→ ${leg.headsign}`
+                              : (leg.line ?? leg.mode)}
+                        </span>
+                        {dur > 0 && (
+                          <span className="text-[10px] text-muted-foreground">{formatDuration(dur)}</span>
+                        )}
+                        {leg.realTime && (
+                          <span className="rounded bg-[#00ff88]/15 px-1 text-[9px] font-black uppercase text-[#00ff88]">
+                            live
+                          </span>
+                        )}
+                      </div>
+                      <div className="text-[10px] text-muted-foreground">
+                        {isFoot ? (
+                          <>
+                            {leg.toName ? `to ${leg.toName}` : leg.mode === 'BIKE' ? 'ride' : 'walk'}
+                            {leg.distanceM ? ` · ${formatDistance(leg.distanceM / 1000)}` : ''}
+                          </>
+                        ) : (
+                          <>
+                            {leg.fromName}{leg.fromTrack ? ` · track ${leg.fromTrack}` : ''} {startClock}
+                            {' → '}
+                            {leg.toName}{leg.toTrack ? ` · track ${leg.toTrack}` : ''} {endClock}
+                            {typeof leg.stops === 'number' && leg.stops > 0
+                              ? ` · ${leg.stops} stop${leg.stops > 1 ? 's' : ''}`
+                              : ''}
+                            {leg.agencyName ? ` · ${leg.agencyName}` : ''}
+                          </>
+                        )}
+                      </div>
+                    </div>
+                  </li>
+                );
+              })}
+            </ol>
+          </div>
+        )}
+
         </div>{/* /scrollable details */}
 
         {/* Follow mode: live turns + voice, with the screen kept awake. */}

src/components/TradeNotificationCard.tsx

@@ -1,5 +1,4 @@
 import { Link } from 'react-router-dom';
-import { nip19 } from 'nostr-tools';
 import { ArrowLeftRight, Handshake, BadgeCheck, CheckCircle2, XCircle, Undo2 } from 'lucide-react';
 import { Avatar, AvatarFallback, AvatarImage } from '@/components/ui/avatar';
 import { useAuthor } from '@/hooks/useAuthor';

src/lib/routing.ts

@@ -63,8 +63,13 @@ export interface RouteResult {
    * distance/time are a driving approximation for the chosen mode.
    */
   approximate?: boolean;
-  /** Present only for transit routes — the chosen public-transport itinerary. */
+  /** Present only for transit routes — the selected public-transport itinerary. */
   transit?: TransitItinerary;
+  /**
+   * Present only for transit routes — every planned option, fastest first.
+   * `transit` duplicates index 0. The dialog lets the user pick another.
+   */
+  transitOptions?: TransitItinerary[];
 }
 
 /** One leg of a public-transport itinerary (walk, bus, subway, rail, …). */
@@ -73,8 +78,21 @@ export interface TransitLeg {
   mode: string;
   /** Short line name when the leg is on a vehicle (e.g. "U9", "S7"). */
   line?: string;
+  /** Headsign / direction of travel, when the feed provides it. */
+  headsign?: string;
+  /** Operator name (e.g. "BVG"), when the feed provides it. */
+  agencyName?: string;
   fromName?: string;
   toName?: string;
+  /** Boarding / alighting platform or track, when the feed provides it. */
+  fromTrack?: string;
+  toTrack?: string;
+  /** Rough "N stops" cue (intermediate stops + the alighting stop). */
+  stops?: number;
+  /** True when the leg carries live/realtime data (vs. a pure timetable). */
+  realTime?: boolean;
+  /** Length of this leg in metres. */
+  distanceM?: number;
   startISO?: string;
   endISO?: string;
   /** Decoded [lat, lng] path for this leg. */
@@ -327,11 +345,15 @@ interface MotisLeg {
   mode?: string;
   routeShortName?: string;
   routeLongName?: string;
+  agencyName?: string;
+  headsign?: string;
+  realTime?: boolean;
   distance?: number;
   startTime?: string;
   endTime?: string;
-  from?: { name?: string };
-  to?: { name?: string };
+  from?: { name?: string; track?: string };
+  to?: { name?: string; track?: string };
+  intermediateStops?: unknown[];
   legGeometry?: { points?: string; precision?: number };
 }
 interface MotisItinerary {
@@ -364,34 +386,50 @@ export async function fetchTransitRoute(
 
   const data = (await res.json()) as { itineraries?: MotisItinerary[] };
   const itineraries = Array.isArray(data.itineraries) ? data.itineraries : [];
-  const it = itineraries[0];
-  if (!it) throw new Error('No transit route found');
+  if (itineraries.length === 0) throw new Error('No transit route found');
 
-  const legs: TransitLeg[] = (it.legs ?? []).map((leg) => ({
-    mode: (leg.mode ?? '').toUpperCase(),
-    line: leg.routeShortName || leg.routeLongName,
-    fromName: leg.from?.name,
-    toName: leg.to?.name,
-    startISO: leg.startTime,
-    endISO: leg.endTime,
-    coordinates:
-      leg.legGeometry?.points
-        ? decodePolyline(leg.legGeometry.points, leg.legGeometry.precision ?? 7)
-        : [],
-  }));
-
-  return {
-    coordinates: legs.flatMap((l) => l.coordinates),
-    distanceM: (it.legs ?? []).reduce((sum, l) => sum + (l.distance ?? 0), 0),
-    durationS: it.duration ?? 0,
-    mode: 'transit',
-    transit: {
+  const mapItinerary = (it: MotisItinerary): TransitItinerary => {
+    const legs: TransitLeg[] = (it.legs ?? []).map((leg) => ({
+      mode: (leg.mode ?? '').toUpperCase(),
+      line: leg.routeShortName || leg.routeLongName,
+      headsign: leg.headsign,
+      agencyName: leg.agencyName,
+      fromName: leg.from?.name,
+      toName: leg.to?.name,
+      fromTrack: leg.from?.track,
+      toTrack: leg.to?.track,
+      stops:
+        Array.isArray(leg.intermediateStops) && leg.intermediateStops.length > 0
+          ? leg.intermediateStops.length + 1
+          : undefined,
+      realTime: leg.realTime === true,
+      distanceM: leg.distance,
+      startISO: leg.startTime,
+      endISO: leg.endTime,
+      coordinates:
+        leg.legGeometry?.points
+          ? decodePolyline(leg.legGeometry.points, leg.legGeometry.precision ?? 7)
+          : [],
+    }));
+    return {
       departISO: it.startTime ?? '',
       arriveISO: it.endTime ?? '',
       durationS: it.duration ?? 0,
       transfers: it.transfers ?? 0,
       legs,
-    },
+    };
+  };
+
+  const options = itineraries.map(mapItinerary);
+  const first = options[0];
+
+  return {
+    coordinates: first.legs.flatMap((l) => l.coordinates),
+    distanceM: (itineraries[0].legs ?? []).reduce((sum, l) => sum + (l.distance ?? 0), 0),
+    durationS: first.durationS,
+    mode: 'transit',
+    transit: first,
+    transitOptions: options,
   };
 }