perf(geoportal): 4-level UAT simplification + intravilan layer + preserve view on basemap switch

UAT zoom-dependent views (read-only, original geom NEVER modified):
- gis_uats_z0 (z0-5): 2000m simplification — country outlines
- gis_uats_z5 (z5-8): 500m — regional overview
- gis_uats_z8 (z8-12): 50m — county/city level with labels
- gis_uats_z12 (z12+): 10m — near-original precision

New layers:
- gis_administrativ (intravilan, arii speciale) — orange dashed, no simplification
- Toggle in layer panel (off by default)

Basemap switching:
- Now preserves current center + zoom when switching between basemaps

Parcels + buildings: NO simplification (exact geometry needed)

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

martin.yaml

@@ -1,36 +1,82 @@
 # Martin v0.15 configuration — optimized tile sources for ArchiTools Geoportal
 # All geometries are EPSG:3844 (Stereo70). Bounds are approximate Romania extent.
+# Original table data is NEVER modified — views compute simplification on-the-fly.
 
-# Disable auto-discovery — only serve explicitly configured sources
 postgres:
   connection_string: ${DATABASE_URL}
   default_srid: 3844
   auto_publish: false
   tables:
-    gis_uats:
+    # ── UAT boundaries: 4 zoom-dependent simplification levels ──
+
+    gis_uats_z0:
       schema: public
-      table: gis_uats
+      table: gis_uats_z0
       geometry_column: geom
       srid: 3844
       bounds: [20.2, 43.5, 30.0, 48.3]
       minzoom: 0
-      maxzoom: 14
+      maxzoom: 5
       properties:
         name: text
         siruta: text
 
-    gis_uats_simple:
+    gis_uats_z5:
       schema: public
-      table: gis_uats_simple
+      table: gis_uats_z5
       geometry_column: geom
       srid: 3844
       bounds: [20.2, 43.5, 30.0, 48.3]
-      minzoom: 0
+      minzoom: 5
-      maxzoom: 9
+      maxzoom: 8
       properties:
         name: text
         siruta: text
 
+    gis_uats_z8:
+      schema: public
+      table: gis_uats_z8
+      geometry_column: geom
+      srid: 3844
+      bounds: [20.2, 43.5, 30.0, 48.3]
+      minzoom: 8
+      maxzoom: 12
+      properties:
+        name: text
+        siruta: text
+        county: text
+
+    gis_uats_z12:
+      schema: public
+      table: gis_uats_z12
+      geometry_column: geom
+      srid: 3844
+      bounds: [20.2, 43.5, 30.0, 48.3]
+      minzoom: 12
+      maxzoom: 16
+      properties:
+        name: text
+        siruta: text
+        county: text
+
+    # ── Administrativ (intravilan, arii speciale) — NO simplification ──
+
+    gis_administrativ:
+      schema: public
+      table: gis_administrativ
+      geometry_column: geom
+      srid: 3844
+      bounds: [20.2, 43.5, 30.0, 48.3]
+      minzoom: 10
+      maxzoom: 16
+      properties:
+        object_id: text
+        siruta: text
+        layer_id: text
+        cadastral_ref: text
+
+    # ── Terenuri (parcels) — NO simplification ──
+
     gis_terenuri:
       schema: public
       table: gis_terenuri
@@ -46,6 +92,8 @@ postgres:
         area_value: float8
         layer_id: text
 
+    # ── Cladiri (buildings) — NO simplification ──
+
     gis_cladiri:
       schema: public
       table: gis_cladiri

prisma/gisuat-postgis-setup.sql

@@ -158,29 +158,49 @@ WHERE geometry IS NOT NULL AND geom IS NULL;
 CREATE INDEX IF NOT EXISTS gis_uat_geom_idx
   ON "GisUat" USING GIST (geom);
 
--- 8. Martin/QGIS-friendly view (moderate simplification — 50m tolerance)
+-- =============================================================================
-CREATE OR REPLACE VIEW gis_uats AS
+-- 8. Zoom-dependent views for Martin vector tiles
-SELECT
+--    4 levels of geometry simplification for progressive loading.
-  siruta,
+--    SAFE: these are read-only views — original geom column is NEVER modified.
-  name,
+-- =============================================================================
-  county,
-  ST_SimplifyPreserveTopology(geom, 50) AS geom
-FROM "GisUat"
-WHERE geom IS NOT NULL;
 
--- 9. Simplified view for low zoom levels (z5-z9) — 500m tolerance
+-- z0-5: Very coarse overview (2000m tolerance) — country-level outlines
-CREATE OR REPLACE VIEW gis_uats_simple AS
+CREATE OR REPLACE VIEW gis_uats_z0 AS
-SELECT
+SELECT siruta, name,
-  siruta,
+  ST_SimplifyPreserveTopology(geom, 2000) AS geom
-  name,
+FROM "GisUat" WHERE geom IS NOT NULL;
+
+-- z5-8: Coarse (500m tolerance) — regional overview
+CREATE OR REPLACE VIEW gis_uats_z5 AS
+SELECT siruta, name,
   ST_SimplifyPreserveTopology(geom, 500) AS geom
-FROM "GisUat"
+FROM "GisUat" WHERE geom IS NOT NULL;
-WHERE geom IS NOT NULL;
+
+-- z8-12: Moderate (50m tolerance) — county/city level
+CREATE OR REPLACE VIEW gis_uats_z8 AS
+SELECT siruta, name, county,
+  ST_SimplifyPreserveTopology(geom, 50) AS geom
+FROM "GisUat" WHERE geom IS NOT NULL;
+
+-- z12+: Fine (10m tolerance) — near-original precision
+CREATE OR REPLACE VIEW gis_uats_z12 AS
+SELECT siruta, name, county,
+  ST_SimplifyPreserveTopology(geom, 10) AS geom
+FROM "GisUat" WHERE geom IS NOT NULL;
+
+-- Keep the legacy gis_uats view for QGIS compatibility
+CREATE OR REPLACE VIEW gis_uats AS
+SELECT siruta, name, county,
+  ST_SimplifyPreserveTopology(geom, 50) AS geom
+FROM "GisUat" WHERE geom IS NOT NULL;
 
 -- =============================================================================
 -- Done! Martin serves these views as vector tiles:
---   - gis_uats        (moderate detail, z9+)
+--   - gis_uats_z0    (z0-5,  2000m simplification)
---   - gis_uats_simple (coarse overview, z5-z9)
+--   - gis_uats_z5    (z5-8,  500m)
--- QGIS: PostgreSQL -> 10.10.10.166:5432 / architools_db -> gis_uats view
+--   - gis_uats_z8    (z8-12, 50m)
+--   - gis_uats_z12   (z12+,  10m near-original)
+--   - gis_uats       (legacy for QGIS, 50m)
+-- Original geometry in GisUat.geom is NEVER modified.
 -- SRID: 3844 (Stereo70)
 -- =============================================================================

src/modules/geoportal/components/layer-panel.tsx

@@ -42,6 +42,13 @@ const LAYER_GROUPS: LayerGroupDef[] = [
     color: "#3b82f6",
     defaultVisible: true,
   },
+  {
+    id: "administrativ",
+    label: "Intravilan",
+    description: "Limite intravilan, arii speciale (zoom >= 10)",
+    color: "#ea580c",
+    defaultVisible: false,
+  },
 ];
 
 /* ------------------------------------------------------------------ */

src/modules/geoportal/components/map-viewer.tsx

@@ -34,19 +34,28 @@ const DEFAULT_ZOOM = 7;
 
 /** Source/layer IDs used on the map */
 const SOURCES = {
-  uatsSimple: "gis_uats_simple",
+  uatsZ0: "gis_uats_z0",   // z0-5:  2000m simplification
-  uats: "gis_uats",
+  uatsZ5: "gis_uats_z5",   // z5-8:  500m
+  uatsZ8: "gis_uats_z8",   // z8-12: 50m
+  uatsZ12: "gis_uats_z12", // z12+:  10m (near-original)
   terenuri: "gis_terenuri",
   cladiri: "gis_cladiri",
+  administrativ: "gis_administrativ",
 } as const;
 
 /** Map layer IDs (prefixed to avoid collisions) */
 const LAYER_IDS = {
-  uatsSimpleFill: "layer-uats-simple-fill",
+  uatsZ0Line: "layer-uats-z0-line",
-  uatsSimpleLine: "layer-uats-simple-line",
+  uatsZ5Fill: "layer-uats-z5-fill",
-  uatsFill: "layer-uats-fill",
+  uatsZ5Line: "layer-uats-z5-line",
-  uatsLine: "layer-uats-line",
+  uatsZ8Fill: "layer-uats-z8-fill",
-  uatsLabel: "layer-uats-label",
+  uatsZ8Line: "layer-uats-z8-line",
+  uatsZ8Label: "layer-uats-z8-label",
+  uatsZ12Fill: "layer-uats-z12-fill",
+  uatsZ12Line: "layer-uats-z12-line",
+  uatsZ12Label: "layer-uats-z12-label",
+  adminFill: "layer-admin-fill",
+  adminLine: "layer-admin-line",
   terenuriFill: "layer-terenuri-fill",
   terenuriLine: "layer-terenuri-line",
   cladiriFill: "layer-cladiri-fill",
@@ -235,7 +244,13 @@ export const MapViewer = forwardRef<MapViewerHandle, MapViewerProps>(
       if (!map || !map.isStyleLoaded()) return;
 
       const mapping: Record<string, string[]> = {
-        uats: [LAYER_IDS.uatsSimpleFill, LAYER_IDS.uatsSimpleLine, LAYER_IDS.uatsFill, LAYER_IDS.uatsLine, LAYER_IDS.uatsLabel],
+        uats: [
+          LAYER_IDS.uatsZ0Line,
+          LAYER_IDS.uatsZ5Fill, LAYER_IDS.uatsZ5Line,
+          LAYER_IDS.uatsZ8Fill, LAYER_IDS.uatsZ8Line, LAYER_IDS.uatsZ8Label,
+          LAYER_IDS.uatsZ12Fill, LAYER_IDS.uatsZ12Line, LAYER_IDS.uatsZ12Label,
+        ],
+        administrativ: [LAYER_IDS.adminFill, LAYER_IDS.adminLine],
         terenuri: [LAYER_IDS.terenuriFill, LAYER_IDS.terenuriLine],
         cladiri: [LAYER_IDS.cladiriFill, LAYER_IDS.cladiriLine],
       };
@@ -263,13 +278,18 @@ export const MapViewer = forwardRef<MapViewerHandle, MapViewerProps>(
     useEffect(() => {
       if (!containerRef.current) return;
 
+      // Preserve current view when switching basemaps
+      const prevMap = mapRef.current;
+      const currentCenter = prevMap ? prevMap.getCenter().toArray() as [number, number] : (center ?? DEFAULT_CENTER);
+      const currentZoom = prevMap ? prevMap.getZoom() : (zoom ?? DEFAULT_ZOOM);
+
       const basemapDef = BASEMAPS[basemap];
 
       const map = new maplibregl.Map({
         container: containerRef.current,
         style: buildStyle(basemapDef),
-        center: center ?? DEFAULT_CENTER,
+        center: currentCenter,
-        zoom: zoom ?? DEFAULT_ZOOM,
+        zoom: currentZoom,
         maxZoom: basemapDef.maxzoom ?? 20,
       });
 
@@ -281,111 +301,118 @@ export const MapViewer = forwardRef<MapViewerHandle, MapViewerProps>(
 
       /* ---- Add Martin sources + layers on load ---- */
       map.on("load", () => {
-        // --- UAT boundaries (simplified, low zoom z0-z9) ---
+        const m = resolvedMartinUrl;
-        map.addSource(SOURCES.uatsSimple, {
+
+        // === UAT z0-5: very coarse (2000m) — lines only ===
+        map.addSource(SOURCES.uatsZ0, {
           type: "vector",
-          tiles: [`${resolvedMartinUrl}/${SOURCES.uatsSimple}/{z}/{x}/{y}`],
+          tiles: [`${m}/${SOURCES.uatsZ0}/{z}/{x}/{y}`],
-          minzoom: 0,
+          minzoom: 0, maxzoom: 5,
-          maxzoom: 9,
         });
-
         map.addLayer({
-          id: LAYER_IDS.uatsSimpleFill,
+          id: LAYER_IDS.uatsZ0Line, type: "line",
-          type: "fill",
+          source: SOURCES.uatsZ0, "source-layer": SOURCES.uatsZ0,
-          source: SOURCES.uatsSimple,
+          maxzoom: 5,
-          "source-layer": SOURCES.uatsSimple,
+          paint: { "line-color": "#7c3aed", "line-width": 0.3 },
-          maxzoom: 9,
-          paint: {
-            "fill-color": "#8b5cf6",
-            "fill-opacity": [
-              "interpolate", ["linear"], ["zoom"],
-              5, 0.03,
-              8, 0.05,
-            ],
-          },
         });
 
-        map.addLayer({
+        // === UAT z5-8: coarse (500m) — lines + faint fill ===
-          id: LAYER_IDS.uatsSimpleLine,
+        map.addSource(SOURCES.uatsZ5, {
-          type: "line",
-          source: SOURCES.uatsSimple,
-          "source-layer": SOURCES.uatsSimple,
-          maxzoom: 9,
-          paint: {
-            "line-color": "#7c3aed",
-            "line-width": [
-              "interpolate", ["linear"], ["zoom"],
-              5, 0.5,
-              8, 1,
-            ],
-          },
-        });
-
-        // --- UAT boundaries (detailed, high zoom z9+) ---
-        map.addSource(SOURCES.uats, {
           type: "vector",
-          tiles: [`${resolvedMartinUrl}/${SOURCES.uats}/{z}/{x}/{y}`],
+          tiles: [`${m}/${SOURCES.uatsZ5}/{z}/{x}/{y}`],
-          minzoom: 9,
+          minzoom: 5, maxzoom: 8,
-          maxzoom: 16,
+        });
+        map.addLayer({
+          id: LAYER_IDS.uatsZ5Fill, type: "fill",
+          source: SOURCES.uatsZ5, "source-layer": SOURCES.uatsZ5,
+          minzoom: 5, maxzoom: 8,
+          paint: { "fill-color": "#8b5cf6", "fill-opacity": 0.03 },
+        });
+        map.addLayer({
+          id: LAYER_IDS.uatsZ5Line, type: "line",
+          source: SOURCES.uatsZ5, "source-layer": SOURCES.uatsZ5,
+          minzoom: 5, maxzoom: 8,
+          paint: { "line-color": "#7c3aed", "line-width": 0.6 },
         });
 
-        map.addLayer({
+        // === UAT z8-12: moderate (50m) — lines + fill + labels ===
-          id: LAYER_IDS.uatsFill,
+        map.addSource(SOURCES.uatsZ8, {
-          type: "fill",
+          type: "vector",
-          source: SOURCES.uats,
+          tiles: [`${m}/${SOURCES.uatsZ8}/{z}/{x}/{y}`],
-          "source-layer": SOURCES.uats,
+          minzoom: 8, maxzoom: 12,
-          minzoom: 8,
-          paint: {
-            "fill-color": "#8b5cf6",
-            "fill-opacity": [
-              "interpolate", ["linear"], ["zoom"],
-              8, 0.03,
-              12, 0.08,
-            ],
-          },
         });
-
         map.addLayer({
-          id: LAYER_IDS.uatsLine,
+          id: LAYER_IDS.uatsZ8Fill, type: "fill",
-          type: "line",
+          source: SOURCES.uatsZ8, "source-layer": SOURCES.uatsZ8,
-          source: SOURCES.uats,
+          minzoom: 8, maxzoom: 12,
-          "source-layer": SOURCES.uats,
+          paint: { "fill-color": "#8b5cf6", "fill-opacity": 0.05 },
-          minzoom: 9,
-          paint: {
-            "line-color": "#7c3aed",
-            "line-width": [
-              "interpolate", ["linear"], ["zoom"],
-              5, 0.5,
-              8, 1,
-              12, 2,
-            ],
-          },
         });
-
         map.addLayer({
-          id: LAYER_IDS.uatsLabel,
+          id: LAYER_IDS.uatsZ8Line, type: "line",
-          type: "symbol",
+          source: SOURCES.uatsZ8, "source-layer": SOURCES.uatsZ8,
-          source: SOURCES.uats,
+          minzoom: 8, maxzoom: 12,
-          "source-layer": SOURCES.uats,
+          paint: { "line-color": "#7c3aed", "line-width": 1 },
-          minzoom: 9,
+        });
+        map.addLayer({
+          id: LAYER_IDS.uatsZ8Label, type: "symbol",
+          source: SOURCES.uatsZ8, "source-layer": SOURCES.uatsZ8,
+          minzoom: 9, maxzoom: 12,
           layout: {
-            "text-field": ["coalesce", ["get", "name"], ["get", "uat_name"], ""],
+            "text-field": ["coalesce", ["get", "name"], ""],
-            "text-size": [
+            "text-size": 10, "text-anchor": "center", "text-allow-overlap": false,
-              "interpolate", ["linear"], ["zoom"],
-              9, 10,
-              14, 14,
-            ],
-            "text-anchor": "center",
-            "text-allow-overlap": false,
-          },
-          paint: {
-            "text-color": "#5b21b6",
-            "text-halo-color": "#ffffff",
-            "text-halo-width": 1.5,
           },
+          paint: { "text-color": "#5b21b6", "text-halo-color": "#fff", "text-halo-width": 1.5 },
         });
 
-        // --- Terenuri (parcels) ---
+        // === UAT z12+: fine (10m) — full detail ===
+        map.addSource(SOURCES.uatsZ12, {
+          type: "vector",
+          tiles: [`${m}/${SOURCES.uatsZ12}/{z}/{x}/{y}`],
+          minzoom: 12, maxzoom: 16,
+        });
+        map.addLayer({
+          id: LAYER_IDS.uatsZ12Fill, type: "fill",
+          source: SOURCES.uatsZ12, "source-layer": SOURCES.uatsZ12,
+          minzoom: 12,
+          paint: { "fill-color": "#8b5cf6", "fill-opacity": 0.08 },
+        });
+        map.addLayer({
+          id: LAYER_IDS.uatsZ12Line, type: "line",
+          source: SOURCES.uatsZ12, "source-layer": SOURCES.uatsZ12,
+          minzoom: 12,
+          paint: { "line-color": "#7c3aed", "line-width": 2 },
+        });
+        map.addLayer({
+          id: LAYER_IDS.uatsZ12Label, type: "symbol",
+          source: SOURCES.uatsZ12, "source-layer": SOURCES.uatsZ12,
+          minzoom: 12,
+          layout: {
+            "text-field": ["coalesce", ["get", "name"], ""],
+            "text-size": 13, "text-anchor": "center", "text-allow-overlap": false,
+          },
+          paint: { "text-color": "#5b21b6", "text-halo-color": "#fff", "text-halo-width": 1.5 },
+        });
+
+        // === Administrativ (intravilan, arii speciale) ===
+        map.addSource(SOURCES.administrativ, {
+          type: "vector",
+          tiles: [`${m}/${SOURCES.administrativ}/{z}/{x}/{y}`],
+          minzoom: 10, maxzoom: 16,
+        });
+        map.addLayer({
+          id: LAYER_IDS.adminFill, type: "fill",
+          source: SOURCES.administrativ, "source-layer": SOURCES.administrativ,
+          minzoom: 11,
+          paint: { "fill-color": "#f97316", "fill-opacity": 0.06 },
+        });
+        map.addLayer({
+          id: LAYER_IDS.adminLine, type: "line",
+          source: SOURCES.administrativ, "source-layer": SOURCES.administrativ,
+          minzoom: 10,
+          paint: { "line-color": "#ea580c", "line-width": 1.2, "line-dasharray": [4, 2] },
+        });
+
+        // --- Terenuri (parcels) — NO simplification ---
         map.addSource(SOURCES.terenuri, {
           type: "vector",
           tiles: [`${resolvedMartinUrl}/${SOURCES.terenuri}/{z}/{x}/{y}`],
@@ -489,8 +516,9 @@ export const MapViewer = forwardRef<MapViewerHandle, MapViewerProps>(
       const clickableLayers = [
         LAYER_IDS.terenuriFill,
         LAYER_IDS.cladiriFill,
-        LAYER_IDS.uatsFill,
+        LAYER_IDS.uatsZ5Fill,
-        LAYER_IDS.uatsSimpleFill,
+        LAYER_IDS.uatsZ8Fill,
+        LAYER_IDS.uatsZ12Fill,
       ];
 
       map.on("click", (e) => {