diff --git a/CHANGELOG.md b/CHANGELOG.md
index 56be68d7..76879ef6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,29 @@
 
 # Changelog
 
+## Sprint 216 Regional thematic coverage (2026-07-16)
+
+- Provisioned all five governed Departement Omgeving thematic rasters for all
+  28 approved Kempen municipalities and for the complete persisted transport
+  region. The resulting 145 ready Datasets remain linked to exact Areas and
+  contain no duplicate area/product pairs.
+- Raised only the thematic-raster acquisition envelope to the measured Kempen
+  extent: 60 km per side and 30 million output pixels. Official WCS reads stay
+  partitioned into fixed 10 km tiles; orthophoto, DHMV and flood limits were not
+  changed.
+- Added bounded retries for interrupted or transient official WCS tile
+  responses. Partial bytes are never accepted and three failed attempts still
+  produce the canonical provider-unavailable error.
+- Hardened the local assistant prompt so year, source and measurement quality
+  must remain attached to the same Dataset when one requested theme has
+  multiple official observations.
+- Verified the complete regional map workflow against live PostGIS. A full
+  Kempen selection reports 45,126.87 ha space occupation, 97,375.81 ha open
+  space, an estimated 484,146.70 inhabitants from the 2019 density raster and
+  the persisted 2022 accessibility and service scores.
+- No migration, live provider integration, synthetic metric or direct database
+  write was introduced.
+
 ## Sprint 215 Grounded assistant cross-domain reliability (2026-07-16)
 
 - Raised the bounded local Ollama answer budget from 700 to 1,200 tokens after
diff --git a/backend/app/services/geo_assistant_service.py b/backend/app/services/geo_assistant_service.py
index 28ab2f5e..57cc8526 100644
--- a/backend/app/services/geo_assistant_service.py
+++ b/backend/app/services/geo_assistant_service.py
@@ -649,6 +649,8 @@ class GeoAssistantService:
             "Als is_estimate true is, noem de waarde verplicht een schatting en nooit exact. "
             "Een officiële bron maakt een afgeleide gebiedswaarde niet exact; noem een schatting nooit officieel geteld. "
             "De numerieke contextwaarden zijn al bronveilig afgerond; neem die afgeronde waarden letterlijk over. "
+            "Gebruik bij elke meting uitsluitend het jaar, de bron en de meetkwaliteit van dezelfde dataset. "
+            "Als een thema meerdere datasets of jaren bevat, benoem elke meting afzonderlijk; voeg bron, jaar of kwaliteit nooit samen in een kop of zin. "
             "Objectaantallen zijn ondersteunend; geef betekenisvolle oppervlakte-, lengte- of bevolkingsmetriek voorrang. "
             "Wanneer de gebruiker meerdere thema's opsomt, behandel elk gevraagd thema en voeg geen ongevraagd thema toe. "
             "Houd het antwoord beknopt: groepeer de kernmetrieken per gevraagd thema en herhaal geen beperkingen. "
diff --git a/backend/tests/test_sprint202_temporal_metrics_and_ollama.py b/backend/tests/test_sprint202_temporal_metrics_and_ollama.py
index 5b5f500e..8e10a44b 100644
--- a/backend/tests/test_sprint202_temporal_metrics_and_ollama.py
+++ b/backend/tests/test_sprint202_temporal_metrics_and_ollama.py
@@ -288,6 +288,8 @@ def test_geo_assistant_sends_grounded_context_without_thinking_trace(monkeypatch
     assert "noem de waarde verplicht een schatting" in captured["payload"]["messages"][0]["content"]
     assert "noem een schatting nooit officieel geteld" in captured["payload"]["messages"][0]["content"]
     assert "contextwaarden zijn al bronveilig afgerond" in captured["payload"]["messages"][0]["content"]
+    assert "uitsluitend het jaar, de bron en de meetkwaliteit van dezelfde dataset" in captured["payload"]["messages"][0]["content"]
+    assert "voeg bron, jaar of kwaliteit nooit samen" in captured["payload"]["messages"][0]["content"]
     assert "verzin geen oorzaak, voorspelling, verzadiging" in captured["payload"]["messages"][0]["content"]
     assert "bereken zelf geen gemiddelde, tempo, oorzaak of afgeleide trend" in captured["payload"]["messages"][0]["content"]
     assert "zonder Markdown-symbolen" in captured["payload"]["messages"][0]["content"]
diff --git a/docs/CODEX_EXECUTION_LOG.md b/docs/CODEX_EXECUTION_LOG.md
index 289c2b5f..fbbcceb9 100644
--- a/docs/CODEX_EXECUTION_LOG.md
+++ b/docs/CODEX_EXECUTION_LOG.md
@@ -1,3 +1,39 @@
+## Sprint 216 Regional thematic coverage (2026-07-16)
+
+Changed:
+- Ran the governed thematic-raster operator for every one of the 28 persisted
+  municipality Areas in `Kempen Regional Workbench` after a successful
+  Arendonk smoke. All five allowlisted products completed for every Area.
+- Added five separately persisted snapshots for the complete `Vervoerregio
+  Kempen - officiele operationele grens`, enabling free selections that cross
+  municipality boundaries while preserving exact Area clipping.
+- Increased only `THEMATIC_RASTER_MAX_SIDE_M` to 60,000 and
+  `THEMATIC_RASTER_MAX_PIXELS` to 30,000,000. The service still rejects larger
+  requests and reads the official WCS in fixed 10 km tiles.
+- Retried transient WCS failures at most three times with a bounded delay.
+  Interrupted responses are discarded and permanent failures remain explicit.
+- Required the local assistant to keep each metric's year, source and
+  measurement quality together when a theme has several official datasets.
+
+Validation evidence:
+- The final inventory contains 145 ready thematic Datasets across 29 Areas and
+  five product keys, with zero missing metadata/storage paths and zero duplicate
+  Area/product pairs. All 145 TIFF files are non-empty and occupy 56 MB.
+- A second complete-region operator run reused all five existing Datasets.
+- Browser validation on `http://192.168.10.150:1202` showed every regional
+  thematic source as available, rendered the MapLibre overlay and calculated
+  the complete Kempen result without browser warnings or errors.
+- The full readiness gate passed 733 backend tests, compilation, fixture and
+  API-contract audits, one Alembic head, frontend typecheck, production build
+  and shell checks.
+- Live PostGIS reports version 3.6 and the all-in-one container remained
+  healthy throughout acquisition and analysis.
+
+Next:
+- Generalize the separate DOV soil-map operator from Mol to all 28 municipality
+  partitions. Keep the historical 1949-1971 survey semantics and raw source
+  manifest explicit; do not merge soil provenance into the raster operator.
+
 ## Sprint 215 Grounded assistant cross-domain reliability (2026-07-16)
 
 Changed:
diff --git a/docs/TODO.md b/docs/TODO.md
index 9fb9b5cb..203545a1 100644
--- a/docs/TODO.md
+++ b/docs/TODO.md
@@ -32,7 +32,8 @@
 - [x] Connect a drawn rectangle to bounded official orthophoto acquisition, local configured-YOLO detection and persisted GRB QA.
 - [x] Add governed official space-occupation, open-space, population-density, accessibility and service-level rasters with semantic map metrics.
 - [x] Add the DOV digital soil map for Mol with exact clipping, source attributes and historical survey limitations.
-- [ ] Execute the governed thematic-raster operator for every persisted Kempen municipality after the Mol live gate passes.
+- [x] Execute the governed thematic-raster operator for every persisted Kempen municipality after the Mol live gate passes.
+- [x] Persist one bounded whole-region snapshot per thematic raster so drawn selections can cross municipality boundaries without changing source semantics.
 - [ ] Generalize the DOV soil-map operator to all 28 approved Kempen municipality partitions with one regional snapshot manifest.
 
 ## Governed source expansion backlog