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docs: CHANGELOG + PROJECT.md for opportunity score data quality improvements

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Documents Phase 0 (income ceiling fix), Phase 1b (overpass_tennis workflow),
and Phase 2b (dim_cities spatial population fallback, 70.5%→98.5% coverage).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Deeman
2026-02-27 08:48:16 +01:00
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# Padelnomics — Project Tracker
> Move tasks across columns as you work. Add new tasks at the top of the relevant column.
> Last updated: 2026-02-27.
> Last updated: 2026-02-27 (opportunity score data quality improvements).
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- [x] **Opportunity Score integration** — `opportunity_score` (Marktpotenzial) wired into city + country templates; `geoname_id` threaded through SQL chain (dim_cities → city_market_profile → pseo_city_costs_de); 71.4% city match rate; stats strip, intro paragraphs, market tables, and FAQ updated in both DE + EN
- [x] **Market Score v3 recalibration** — fixes ranking inversion (Germany 1/100k was outscoring Spain 36/100k); log-scaled density + count gate replaces linear formula; saturation discount removed; template thresholds updated across all 3 pSEO templates; verified: Málaga 70.1, Barcelona 67.4, Madrid 66.9, Amsterdam 58.4, Bernau 43.9 (was 92.7), Berlin 42.2, London 44.1
- [x] **Opportunity Score v2** — supply gap ceiling raised 4→8/100k (gentler gradient, accounts for 87% data undercount); formula documentation added (DuckDB LEAST NULL behaviour, income saturation, tennis data gap)
- [x] **Opportunity Score v2 — income ceiling fix** — PPS normalisation `/200.0` → `/35000.0`; economic power component now differentiates countries (DE 13.2, ES 10.7, SE 14.3 pts; was 20.0 everywhere)
- [x] **dim_cities population coverage 70.5% → 98.5%** — GeoNames spatial fallback CTE (ST_Distance_Sphere, 0.14° bbox) resolves localization mismatches (Wien→Vienna 1.69M, Milano→Milan 1.37M); population cascade: Eurostat > Census > ONS > GeoNames string > GeoNames spatial > 0
- [x] **overpass_tennis added to supervisor workflows** — monthly schedule in `workflows.toml`; was only in combined extractor
### Data Pipeline (DaaS)
- [x] Overpass API extractor (OSM padel courts)