Replace the haversine straight-line estimate with real road travel times
from a self-hosted OSRM (free/offline — Mapbox Matrix is billable).
- hub: osrmMatrix() calls OSRM /table for the job+home coords (node order
matches route_solver: jobs then homes), returns a minutes matrix.
Handles PARTIAL coords — OSRM for geolocated nodes, 0/neutral for the
rest (matches the solver's own fallback), so a few tech homes without
coords don't disable OSRM for the geolocated majority. /roster/
optimize-routes injects body.matrix; graceful fallback to haversine if
OSRM is unreachable or too few points.
- config: OSRM_URL (default http://osrm:5000).
- services/osrm/README.md: reproducible setup (Québec extract, MLD
pipeline, osrm-routed on erpnext_erpnext network).
Deployed + verified: OSRM /table hit with the full coord set, no
fallback; optimizer routes on real road times.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
