feat: complete governed Walloon coverage sources
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Codex
@@ -482,6 +482,42 @@ Returns a constrained transparent PNG generated from the persisted governed
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raster. It accepts neither an arbitrary file path nor a provider URL and feeds
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the existing MapLibre image-overlay path.
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### GET `/api/v1/projects/{project_id}/datasets/walous/products`
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Returns the fixed official WALOUS 2020/2023 registry. Each product reports its
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observation year, EPSG:3812 source contract, 1 m source semantics, configured
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state, attribution, licence and documented edition accuracy. `configured`
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becomes true only when the checksum-validated source GeoTIFF exists below
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`WALOUS_SOURCE_DIR`; the endpoint never downloads an archive.
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### POST `/api/v1/projects/{project_id}/datasets/walous/acquire`
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Reads a bounded window from one provisioned official 1 m WALOUS source,
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applies nearest-neighbour resampling to the configured analysis resolution,
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masks `bbox intersect Area`, validates class values 1-11 and persists a normal
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raster Dataset through `DatasetService`. URLs, paths, classes and resolutions
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are not caller-controlled. Equal spatial requests for 2020 and 2023 share one
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temporal series key.
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### POST `/api/v1/projects/{project_id}/datasets/{dataset_id}/raster/walous/select`
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Returns mapped hectares for total observed land cover, trees/forest, surface
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water, artificial cover, annual and permanent herbaceous cover and bare soil.
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Values are cell-area estimates from the persisted derived raster. The response
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explicitly rejects legal land use, ownership, tree count, timber volume and
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water volume as unsupported interpretations.
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### GET `/api/v1/projects/{project_id}/datasets/{dataset_id}/raster/walous/image`
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Returns a transparent PNG using the governed 11-class colour table and only
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the persisted Dataset geometry. It never proxies the source archive.
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The Map workbench acquires every configured comparable WALOUS observation for
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the same Walloon selection when current land cover is first requested. The
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latest edition drives the current result; the ordinary temporal comparison API
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then compares 2020 and 2023 semantic area metrics. Raster evolution does not
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claim individual object additions or removals.
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### GET `/api/v1/projects/{project_id}/datasets`
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List datasets.
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@@ -3652,6 +3652,28 @@ Validation:
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- `cd backend && python -m alembic heads && python -m alembic upgrade head --sql`
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# Codex Execution Log
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## Post-V1 national coverage completion: Wallonia (2026-07-22)
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- Validated the official WALOUS 2020 and 2023 archives, their EPSG:3812 1 m
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raster contract, 11 classes, CC BY 4.0 attribution and published edition
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accuracy. Added a fail-closed operator provisioner with archive-size,
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extraction, CRS, resolution, class and checksum gates.
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- Added bounded WALOUS persistence through `DatasetService`, semantic hectare
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metrics, a governed PNG overlay and automatic 2020/2023 temporal-series
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materialization. The existing temporal API now compares persisted WALOUS
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raster metrics while keeping object-level change unavailable.
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- Added the queryable legal SPW flood-hazard polygon product and class-aware
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metrics through the existing official-vector engine.
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- Wired both integrations through Compose, the all-in-one Unraid runner,
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editable DockerMan template and readiness gate. Added canonical API,
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persistence, rendering, temporal and runtime-parity regression tests.
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- Revalidated the official Walloon DTM distribution. The whole-region files
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are too large for implicit startup or per-selection mirroring (about 41 GB
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at 1 m and 213 GB at 0.5 m), so elevation remains a documented capacity-plan
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prerequisite instead of a fake operational source.
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- Reprobed the documented MDK WCS endpoints. Strict TLS still fails hostname
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validation; acquisition remains disabled and no insecure fallback was added.
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This file must be updated by Codex after each implementation pass.
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## Format
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@@ -26,7 +26,7 @@ coverage or historical dates.
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| --- | --- | --- |
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| Belgium | NGI administrative boundaries; Statbel population/statistical sectors | Statbel population 2021-2025 |
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| Flanders | GRB buildings, roads, water and parcels; DHMV terrain/surface; VMM flood scenarios; BWK/Natura 2000; DOV soil; policy rasters for space, open space, accessibility and services; agriculture and orthophoto where governed | Population 2021-2025; land-use/land-cover series where retained; agriculture editions; historical maps/orthophotos where the selected product has a real observation date |
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| Wallonia | Bounded PICC buildings, roads and hydrography; governed SPW bed-elevation/bathymetry products | No general cross-theme regional history yet |
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| Wallonia | Bounded PICC buildings, roads and hydrography; legal SPW flood-hazard polygons; bounded WALOUS 2020/2023 land-cover analysis from provisioned official rasters; governed SPW bed-elevation/bathymetry products | Comparable WALOUS land-cover area metrics for 2020-2023; no general cross-theme regional history yet |
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| Brussels | Bounded UrbIS buildings, street axes, cadastral parcels and Land Cover blocks; official FO/GB blocks provide forest/park area and WB blocks provide permanent water area | No general cross-theme regional history yet; the live WFS has no per-feature observation date |
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| Belgian North Sea | RBINS reporting units; Marine Spatial Plan 2026-2034; governed MDK bathymetry only when runtime acquisition is explicitly configured | No multi-epoch bathymetry or marine-plan trend yet |
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@@ -37,23 +37,21 @@ applicable bounded official source or reports the theme as unsupported.
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## Priority coverage gaps
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1. Govern the public Walloon WALOUS land-cover editions (including the
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published 2018/2020 change product) as a real regional time series. A class
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crosswalk is required because the older COSW 2005/2007 methodology differs.
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Official catalogue:
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`https://geoportail.wallonie.be/catalogue-donnees?search-text=occupation+du+sol`.
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2. Govern the current public Walloon flood-hazard vector/raster products and
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retain their model scenario semantics separately from observed floods.
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Official record:
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`https://geoportail.wallonie.be/catalogue/14084108-2c7b-4091-b62d-ff0fc235213a.html`.
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3. Add a common Belgium-wide topographic baseline with normalized theme
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1. Add the official WALOUS 2018 edition only after SPW restores a stable direct
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artifact or another checksum-verifiable acquisition contract. WALOUS 2020
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and 2023 are operational and comparable; COSW 2005/2007 remains a different
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methodology and is not silently merged.
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2. Add a common Belgium-wide topographic baseline with normalized theme
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semantics across NGI, Flanders, Wallonia and Brussels.
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4. Govern comparable Walloon and Brussels historical editions before exposing
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3. Govern comparable Walloon and Brussels historical editions before exposing
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evolution for buildings, roads, land cover, soil, elevation or flood risk.
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5. Add nationally comparable land-cover history with explicit class crosswalks
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4. Add nationally comparable land-cover history with explicit class crosswalks
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and uncertainty; never compare incompatible legends silently.
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6. Add multi-epoch marine bathymetry and survey-footprint metadata before
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5. Add multi-epoch marine bathymetry and survey-footprint metadata before
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presenting seabed evolution.
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6. Add Walloon DTM only through an operator capacity plan: the official 1 m
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national artifact is about 41 GB and the 0.5 m artifact about 213 GB, so it
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is not safe as an implicit per-selection dependency.
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7. Expand persisted raster partition manifests beyond the regression regions
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only where repeated use justifies caching; bounded acquisition remains the
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default for one-off selections.
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+5
-3
@@ -63,9 +63,11 @@ geen open productroadmap meer.
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- [x] Maak UrbIS Land Cover begrensd operationeel voor Brussel: alle Blocks als
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landbedekking, FO/GB als bos en park en WB als permanent water, met echte
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PostGIS-oppervlaktemetrics en broncodes.
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- [ ] Implementeer begrensde WALOUS 2018/2020/2023 rasteracquisitie in
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EPSG:3812 met officiële klassen, vergelijkbaarheidscontract en pixelbudget.
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- [ ] Implementeer de actuele Waalse overstromingsgevaarkaart als afzonderlijk
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- [x] Implementeer begrensde WALOUS 2020/2023 rasteracquisitie in EPSG:3812
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met officiële klassen, vergelijkbaarheidscontract, pixelbudget, automatische
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tijdreeksmaterialisatie en evolutiemetrics. WALOUS 2018 blijft bewust open
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tot SPW opnieuw een stabiel checksum-verifieerbaar direct artifact aanbiedt.
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- [x] Implementeer de actuele Waalse overstromingsgevaarkaart als afzonderlijk
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scenario-/juridisch contract; gebruik WMS alleen als context tenzij
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analytische pixels of vectorgeometrie officieel beschikbaar zijn.
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- [ ] Bouw een Belgische AI-validatiematrix met gelabelde golden AOIs in elk
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