feat: add parcel-sync module (eTerra ANCPI integration with PostGIS)

- 31 eTerra layer catalog (terenuri, cladiri, documentatii, administrativ)
- Incremental sync engine (OBJECTID comparison, only downloads new features)
- PostGIS-ready Prisma schema (GisFeature, GisSyncRun, GisUat models)
- 7 API routes (/api/eterra/login, count, sync, features, layers/summary, progress, sync-status)
- Full UI with 3 tabs (Sincronizare, Parcele, Istoric)
- Env var auth (ETERRA_USERNAME / ETERRA_PASSWORD)
- Real-time sync progress tracking with polling

src/app/api/eterra/count/route.ts

@@ -0,0 +1,59 @@
+import { NextResponse } from "next/server";
+import { EterraClient } from "@/modules/parcel-sync/services/eterra-client";
+import { findLayerById } from "@/modules/parcel-sync/services/eterra-layers";
+import { fetchUatGeometry } from "@/modules/parcel-sync/services/uat-geometry";
+
+export const runtime = "nodejs";
+export const dynamic = "force-dynamic";
+
+type Body = {
+  username?: string;
+  password?: string;
+  siruta?: string | number;
+  layerId?: string;
+};
+
+export async function POST(req: Request) {
+  try {
+    const body = (await req.json()) as Body;
+    const username = (
+      body.username ??
+      process.env.ETERRA_USERNAME ??
+      ""
+    ).trim();
+    const password = (
+      body.password ??
+      process.env.ETERRA_PASSWORD ??
+      ""
+    ).trim();
+    const siruta = String(body.siruta ?? "").trim();
+
+    if (!username || !password)
+      return NextResponse.json({ error: "Credențiale lipsă" }, { status: 400 });
+    if (!/^\d+$/.test(siruta))
+      return NextResponse.json({ error: "SIRUTA invalid" }, { status: 400 });
+
+    const layerId = body.layerId ? String(body.layerId) : undefined;
+    const layer = layerId ? findLayerById(layerId) : undefined;
+    if (layerId && !layer)
+      return NextResponse.json({ error: "Layer necunoscut" }, { status: 400 });
+
+    const client = await EterraClient.create(username, password);
+
+    let geometry;
+    if (layer?.spatialFilter) {
+      geometry = await fetchUatGeometry(client, siruta);
+    }
+
+    const count = layer
+      ? geometry
+        ? await client.countLayerByGeometry(layer, geometry)
+        : await client.countLayer(layer, siruta)
+      : await client.countParcels(siruta);
+
+    return NextResponse.json({ count });
+  } catch (error) {
+    const message = error instanceof Error ? error.message : "Eroare server";
+    return NextResponse.json({ error: message }, { status: 500 });
+  }
+}