Updated backend/frontend

README.md

@@ -24,6 +24,13 @@ Create a `.env` file in the project root:
 ```
 VALHALLA_URL=http://valhalla:8002/route
 PORT=8080
+# Optional: Nominatim base URL (defaults to https://nominatim.openstreetmap.org)
+NOMINATIM_URL=https://nominatim.openstreetmap.org
+# Recommended: configure a descriptive User-Agent per Nominatim usage policy
+# Example format: "AppName/Version (+contact-url-or-email)"
+NOMINATIM_USER_AGENT=FreeMoto/1.0 (+https://fm.ztsw.de/)
+# Optional: log level (debug, info, warn, error). Default: info
+LOG_LEVEL=info
 ```
 
 ### Local Development
@@ -59,6 +66,9 @@ services:
     #environment:
       # - VALHALLA_URL=http://10.200.0.15:8002/route
       # - PORT=8080
+      # - NOMINATIM_URL=https://nominatim.openstreetmap.org
+      # - NOMINATIM_USER_AGENT=FreeMoto/1.0 (+https://fm.ztsw.de/)
+      # - LOG_LEVEL=debug
   valhalla-scripted:
     image: ghcr.io/valhalla/valhalla-scripted:latest
     ports:
@@ -69,6 +79,17 @@ services:
         - tile_urls=https://download.geofabrik.de/europe/germany-latest.osm.pbf 
 ```
 
+### Notes on Nominatim
+
+- Please follow the official usage policy for Nominatim. Provide a meaningful `NOMINATIM_USER_AGENT` that includes a contact URL or email. The default is `FreeMoto/1.0 (+https://fm.ztsw.de/)`.
+- You can point `NOMINATIM_URL` to your own Nominatim instance or keep the default public endpoint.
+
+### Logging
+
+- Configure verbosity with `LOG_LEVEL`.
+  - Supported values: `debug`, `info` (default), `warn`, `error`.
+- Incoming requests are logged at `info` level. Upstream success traces (Valhalla/Nominatim) are at `debug`. Errors are at `error`.
+
 ## Customization
 
 - **Map UI:** Edit `static/index.html` and `static/main.js`