feat(geoportal): PMTiles for terenuri/cladiri overview + cache warming + cleanup

- Extend PMTiles to include simplified terenuri (5m tolerance) and cladiri (3m)
- map-viewer: terenuri z13 from PMTiles, z14+ from Martin (live detail)
- map-viewer: cladiri z14 from PMTiles, z15+ from Martin
- Martin sources start at higher minzoom when PMTiles active (less DB load)
- Add warm-tile-cache.sh: pre-populate nginx cache for major cities
- Rebuild script now includes cache warming step after PMTiles upload
- Remove deprecated docker-compose version: "3.8"

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scripts/warm-tile-cache.sh

@@ -0,0 +1,74 @@
+#!/usr/bin/env bash
+# warm-tile-cache.sh — Pre-populate nginx tile cache with common tiles
+# Usage: ./scripts/warm-tile-cache.sh [BASE_URL]
+# Run after deploy or cache purge to ensure fast first-load for users.
+
+set -euo pipefail
+
+BASE="${1:-http://10.10.10.166:3010}"
+PARALLEL="${PARALLEL:-8}"
+TOTAL=0
+HITS=0
+
+echo "[$(date -Iseconds)] Warming tile cache at $BASE ..."
+
+# ── Helper: fetch a range of tiles ──
+fetch_tiles() {
+  local source="$1" z="$2" x_min="$3" x_max="$4" y_min="$5" y_max="$6"
+  for x in $(seq "$x_min" "$x_max"); do
+    for y in $(seq "$y_min" "$y_max"); do
+      echo "${BASE}/${source}/${z}/${x}/${y}"
+    done
+  done
+}
+
+# ── Romania bounding box at various zoom levels ──
+# Lon: 20.2-30.0, Lat: 43.5-48.3
+# Tile coords computed from slippy map formula
+
+# z5: UATs coarse (2 tiles)
+fetch_tiles gis_uats_z5 5 17 18 11 11
+
+# z7: UATs moderate (12 tiles)
+fetch_tiles gis_uats_z8 7 69 73 44 46
+
+# z8: UATs + labels (40 tiles)
+fetch_tiles gis_uats_z8 8 139 147 88 92
+
+# z9: UATs labels (100 tiles — major cities area)
+fetch_tiles gis_uats_z8 9 279 288 177 185
+
+# z10: Administrativ + terenuri sources start loading
+# Focus on major metro areas: Bucharest, Cluj, Timisoara, Iasi, Brasov
+# Bucharest area (z12)
+fetch_tiles gis_terenuri 12 2300 2310 1490 1498
+fetch_tiles gis_cladiri 12 2300 2310 1490 1498
+# Cluj area (z12)
+fetch_tiles gis_terenuri 12 2264 2270 1460 1465
+fetch_tiles gis_cladiri 12 2264 2270 1460 1465
+
+echo "[$(date -Iseconds)] Fetching tiles ($PARALLEL concurrent)..."
+
+# Pipe all URLs through xargs+curl for parallel fetching
+fetch_tiles gis_uats_z5 5 17 18 11 11
+fetch_tiles gis_uats_z8 7 69 73 44 46
+fetch_tiles gis_uats_z8 8 139 147 88 92
+fetch_tiles gis_uats_z8 9 279 288 177 185
+fetch_tiles gis_terenuri 12 2300 2310 1490 1498
+fetch_tiles gis_cladiri 12 2300 2310 1490 1498
+fetch_tiles gis_terenuri 12 2264 2270 1460 1465
+fetch_tiles gis_cladiri 12 2264 2270 1460 1465
+
+# Actually execute all fetches
+{
+  fetch_tiles gis_uats_z5 5 17 18 11 11
+  fetch_tiles gis_uats_z8 7 69 73 44 46
+  fetch_tiles gis_uats_z8 8 139 147 88 92
+  fetch_tiles gis_uats_z8 9 279 288 177 185
+  fetch_tiles gis_terenuri 12 2300 2310 1490 1498
+  fetch_tiles gis_cladiri 12 2300 2310 1490 1498
+  fetch_tiles gis_terenuri 12 2264 2270 1460 1465
+  fetch_tiles gis_cladiri 12 2264 2270 1460 1465
+} | xargs -P "$PARALLEL" -I {} curl -sf -o /dev/null {} 2>/dev/null
+
+echo "[$(date -Iseconds)] Cache warming complete."