- validate_laz: verify point data accessibility (not just headers) to detect
corrupted COPC files that pass header checks but fail on data reads
- classify_ground: fallback from CSF to SMRF when CSF produces no ground
points or PDAL errors (fixes 2/9 failing tiles)
- MSRM: preserve sign in weighted combination so RdBu_r colormap shows
both red (elevated) and blue (depressed) instead of red only
- Add Sky-View Factor (SVF) visualization: cos²(horizon angle) over 16
directions, excellent for archaeological earthwork detection
- Add Anisotropic Openness: directional weighting (NW-SE/NE-SW) enhances
linear feature detection aligned with common settlement patterns
- Remove anomalies and flow visualizations (replaced by SVF + aniso_open)
- Location inset: use IGN topographic map at zoom 10 instead of simplified
France outline, with red rectangle marker and fallback
- Remove flow (hydrological accumulation) from VIZ_STEPS
c634db573a