Complete regional raster exploration

2026-07-16 14:21:32 +02:00
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+## Sprint 218 Regional terrain and flood completion (2026-07-16)
+
+Changed:
+- Added the resumable 28-municipality DHMV DTM/DSM operator and executed all
+  56 governed acquisitions through the canonical API.
+- Executed all 336 governed VMM mechanism/climate/return-period combinations
+  across the same 28 persisted municipality Areas.
+- Diagnosed Retie's official WCS integer-grid edge rounding in both providers.
+  Accepted only bounded 5%/0.25 m edge drift, harmonized accepted tiles to the
+  exact requested grid and retained source resolutions, tile indexes and
+  method in provenance. A 4.5 m regression fixture remains rejected.
+- Added exact partitioned terrain and flood selection routes for bounded
+  rectangles that cross municipality boundaries. They use only persisted
+  GeoTIFFs, calculate global statistics from combined cells and retain the
+  contributing Dataset ids in the response.
+- Made the complete Kempen Area expose DHMV/VMM as logical regional MapLibre
+  layers while retaining municipality-linked storage and twelve distinct VMM
+  scenario identities.
+
+Live evidence:
+- VMM: 336 ready Datasets, 28 Areas, 12 products, 336 DatasetVersions,
+  165,277,992 bytes, zero duplicate Area/product pairs and zero missing or
+  size-mismatched files.
+- DHMV: 56 ready Datasets, 28 Areas, two products, 56 DatasetVersions,
+  282,645,991 bytes, zero duplicate Area/product pairs and zero missing or
+  size-mismatched files.
+- Every VMM Dataset has null `observed_at` and explicit false flags for
+  bathymetry, permanent depth/volume and concurrent volume. A repeated Retie
+  run reused all twelve immutable Dataset ids.
+- Tower commit `153cff0` passed container health, PostGIS 3.6, Alembic head
+  `202607160001` and frontend/API/icon proxy checks before the regional UI
+  follow-up.
+
+Validation evidence:
+- Focused DHMV/VMM and regional explorer backend suites passed, including
+  exact adjacent-partition percentile and area calculations.
+- The pre-UI-fix release gate passed 746 tests, backend compilation, API
+  contract checks, one Alembic head, frontend typecheck and production build.
+- The final local release gate passed all 752 backend tests, backend
+  compilation, 107 documented API route checks, Alembic head `202607160001`,
+  frontend typecheck and the production build. Live deployment and browser
+  evidence are recorded after the Tower rollout.
+
+Next:
+- Use the now-complete regional current-state layers as the baseline for a
+  governed refresh/change scheduler. Keep source-specific publication dates
+  and scenario semantics; do not turn VMM scenarios into a historical water
+  level series.
+
 ## Sprint 217 Regional DOV soil coverage (2026-07-16)

 Changed: