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/cmd/chat-svc/main.go

@@ -97,7 +97,7 @@ func main() {
 	chat := app.Group("/api/v1/chat", middleware.JWT(middleware.JWTConfig{
 		Secret:     cfg.JWTSecret,
 		AuthSvcURL: cfg.AuthSvcURL,
-		AllowGuest: false,
+		AllowGuest: true,
 	}))
 
 	chat.Post("/", func(c *fiber.Ctx) error {