docs: CHANGELOG + PROJECT.md for Phase 2a NUTS-1 regional income

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Deeman
2026-02-27 10:26:48 +01:00
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### Data & Intelligence
- [ ] Sports centre Overpass extract (`leisure=sports_centre`) — additional market signal for `dim_locations`
- [ ] City-level income enrichment (Eurostat NUTS-3 regional income — replaces country-level PPS proxy, higher granularity)
- [x] **Phase 2a — NUTS-1 regional income**`nama_10r_2hhinc` extractor + `stg_regional_income` staging model + `admin1_to_nuts1` VALUES CTE in `dim_locations`; all 16 German Bundesländer mapped; Bayern ~29K vs Sachsen ~19K PPS differentiation; country-level fallback for ES/FR/IT/etc.
- [ ] Phase 2b — city-level income (NUTS-3 granularity) if NUTS-1 proves insufficient
- [ ] Interactive opportunity map / explorer in web app (map UI over `location_opportunity_profile` — bounding box queries via ST_Distance_Sphere)
- [ ] Multi-source data aggregation (add booking platforms beyond Playtomic)
- [ ] Google Maps signals (reviews, ratings)