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/core/i18n/locales/ro.ts

@@ -111,4 +111,9 @@ export const ro: Labels = {
     title: "Birouri Partajate",
     description: "Rezervare birouri în camera partajată",
   },
+  "parcel-sync": {
+    title: "eTerra Parcele",
+    description:
+      "Sincronizare parcele cadastrale ANCPI cu bază de date GIS locală",
+  },
 };