- services/marker-api/: Go HTTP service (0 external deps, ~8 MB RAM)
- Mathematically correct teardrop pin shape (Google Maps style)
- Tangent-based outline: circle + straight sides meeting at tip
- White border + white inner dot, in-memory cache (max 500 entries)
- .forgejo/workflows/build-marker-api.yml: CI builds & pushes to
Forgejo registry on push to main (image: rd13_tile_server-marker-api)
- docker-compose.yml: add marker-api service on port 9984
- Caddyfile (rd13_system_proxy): route /styles/v4/marker/* -> :9984
- docs/ADMIN.md + MAINTAINER.md: marker-api dokumentiert
Fixes: /styles/v4/marker/pin-m+{color}(@{scale}x).png was 404, now 200
