Add H3 res-4 regional catchment metrics (~15-18km radius, cell + 6
neighbours) to both the addressable market (25pts) and supply gap
(30pts) components of location_opportunity_profile.
Changes:
- config.yaml: add h3 to DuckDB extensions (requires one-time
INSTALL h3 FROM community on each machine)
- dim_locations: add h3_cell_res4 column via h3_latlng_to_cell()
- location_opportunity_profile: add hex_stats + catchment CTEs;
update score formula to use catchment_population and
catchment_padel_courts; expose catchment_population,
catchment_padel_courts, catchment_venues_per_100k as output cols
Motivation: local population underestimates functional market for
mid-size cities (e.g. Oldenburg ~170K misses surrounding Gemeinden).
H3 k_ring(1) captures the realistic driving-distance catchment
(~462km²) consistently across both score components.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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