Use self-hosted tiles

Taskfile.data.yml

@@ -2,6 +2,7 @@ version: '3'
 
 vars:
   DATA_DIR: /bulk/property-data
+  TILES_OUTPUT: "{{.DATA_DIR}}/uk.pmtiles"
   ARCGIS_OUTPUT: "{{.DATA_DIR}}/arcgis_data.parquet"
   PRICE_PAID_OUTPUT: "{{.DATA_DIR}}/price-paid-complete.parquet"
   IOD_OUTPUT: "{{.DATA_DIR}}/IoD2025_Scores.parquet"
@@ -21,8 +22,31 @@ vars:
   NAPTAN_OUTPUT: "{{.DATA_DIR}}/naptan.parquet"
   BROADBAND_OUTPUT: "{{.DATA_DIR}}/broadband.parquet"
   SCHOOL_PROXIMITY_OUTPUT: "{{.DATA_DIR}}/school_proximity.parquet"
+  POSTCODES_OUTPUT: "{{.DATA_DIR}}/postcodes"
 
 tasks:
+  download:tiles:
+    desc: Download UK map tiles (PMTiles format from Protomaps)
+    status:
+      - test -f {{.TILES_OUTPUT}}
+    vars:
+      PMTILES_VERSION: "1.22.3"
+      PMTILES_BIN: "{{.DATA_DIR}}/pmtiles"
+    cmds:
+      - |
+        echo "Downloading UK PMTiles (~1.5GB)..."
+        echo "This extracts UK tiles from the Protomaps planet file."
+        echo ""
+        # Download pmtiles CLI if not present
+        if [ ! -f "{{.PMTILES_BIN}}" ]; then
+          echo "Downloading pmtiles CLI v{{.PMTILES_VERSION}}..."
+          curl -sL "https://github.com/protomaps/go-pmtiles/releases/download/v{{.PMTILES_VERSION}}/go-pmtiles_{{.PMTILES_VERSION}}_Linux_x86_64.tar.gz" | tar -xz -C "{{.DATA_DIR}}" pmtiles
+          chmod +x "{{.PMTILES_BIN}}"
+        fi
+        # Extract UK region (bbox: -10.5,49.5,2.5,61)
+        # Using a recent daily build from Protomaps
+        "{{.PMTILES_BIN}}" extract https://build.protomaps.com/20260201.pmtiles {{.TILES_OUTPUT}} --bbox=-10.5,49.5,2.5,61
+
   prompt:epc:
     desc: Prompt user to download EPC dataset (requires registration)
     status:
@@ -110,6 +134,12 @@ tasks:
     cmds:
       - uv run python -m pipeline.download.broadband --output {{.BROADBAND_OUTPUT}}
 
+  download:postcodes:
+    desc: Download GB postcodes data from MapIt
+    status:
+      - test -f {{.POSTCODES_OUTPUT}}
+    cmds:
+      - uv run python -m pipeline.download.postcodes --output {{.POSTCODES_OUTPUT}}
 
   download:noise:
     desc: Download Defra noise data (road, rail, airport) sampled at postcode centroids