feat: travel service with 2GIS routing, POI, hotels + finance providers + UI overhaul

- Add travel-svc microservice (Amadeus, TravelPayouts, 2GIS, OpenRouteService)
- Add travel orchestrator with parallel collectors (events, POI, hotels, flights)
- Add 2GIS road routing with transport cost calculation (car/bus/taxi)
- Add TravelMap (2GIS MapGL) and TravelWidgets components
- Add useTravelChat hook for streaming travel agent responses
- Add finance heatmap providers refactor
- Add SearXNG settings, API proxy routes, Docker compose updates
- Update Dockerfiles, config, types, and all UI pages for consistency

Made-with: Cursor

backend/webui/src/components/settings/AccountTab.tsx

@@ -164,7 +164,7 @@ export function AccountTab() {
                     <h3 className="text-lg font-medium text-primary">{user.name}</h3>
                     <span className={`text-xs font-medium px-2 py-0.5 rounded ${
                       user.tier === 'business' 
-                        ? 'bg-amber-500/20 text-amber-400' 
+                        ? 'bg-amber-500/15 text-amber-600' 
                         : user.tier === 'pro' 
                         ? 'bg-accent/20 text-accent' 
                         : 'bg-surface text-muted'