feat(geoportal): OpenFreeMap vector basemaps + eTerra ORTO 2024 ortophoto

Basemap options:
- Liberty (OpenFreeMap vector) — default, sharp vector tiles
- Dark (OpenFreeMap) — dark theme, auto-styled
- Satellite (ESRI World Imagery) — raster
- ANCPI Ortofoto 2024 — proxied via /api/eterra/tiles/orto, converts
  Web Mercator z/x/y to EPSG:3844 bbox, authenticates with eTerra
  session, caches 24h. Requires ETERRA_USERNAME/PASSWORD env vars.

Replaces old raster OSM/OpenTopoMap with vector styles.

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

src/modules/geoportal/components/basemap-switcher.tsx

@@ -1,14 +1,15 @@
 "use client";
 
-import { Map, Mountain, Satellite } from "lucide-react";
+import { Map, Moon, Satellite, TreePine } from "lucide-react";
 import { Button } from "@/shared/components/ui/button";
 import { cn } from "@/shared/lib/utils";
 import type { BasemapId } from "../types";
 
 const BASEMAPS: { id: BasemapId; label: string; icon: typeof Map }[] = [
-  { id: "osm", label: "Harta", icon: Map },
+  { id: "liberty", label: "Harta", icon: Map },
+  { id: "dark", label: "Dark", icon: Moon },
   { id: "satellite", label: "Satelit", icon: Satellite },
-  { id: "topo", label: "Teren", icon: Mountain },
+  { id: "orto", label: "ANCPI", icon: TreePine },
 ];
 
 type BasemapSwitcherProps = {