feat(parcel-sync): sync button on empty Harta tab + intravilan in base sync

Map tab: when UAT has no local data, shows a "Sincronizează terenuri,
clădiri și intravilan" button that triggers background base sync.

Sync background (base mode): now also syncs LIMITE_INTRAV_DYNAMIC layer
(intravilan boundaries) alongside TERENURI_ACTIVE + CLADIRI_ACTIVE.
Non-critical — if intravilan fails, the rest continues.

Also fixed remaining \u2192 unicode escapes in export/layers/epay tabs.

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

src/modules/parcel-sync/components/epay-tab.tsx

@@ -60,7 +60,7 @@ type GisUatResult = {
 /* ------------------------------------------------------------------ */
 
 function formatDate(iso?: string | null) {
-  if (!iso) return "\u2014";
+  if (!iso) return "—";
   return new Date(iso).toLocaleDateString("ro-RO", {
     day: "2-digit",
     month: "2-digit",
@@ -71,7 +71,7 @@ function formatDate(iso?: string | null) {
 }
 
 function formatShortDate(iso?: string | null) {
-  if (!iso) return "\u2014";
+  if (!iso) return "—";
   return new Date(iso).toLocaleDateString("ro-RO", {
     day: "2-digit",
     month: "2-digit",
@@ -715,7 +715,7 @@ export function EpayTab() {
                           {formatShortDate(order.expiresAt)}
                         </span>
                       ) : (
-                        <span className="text-muted-foreground">{"\u2014"}</span>
+                        <span className="text-muted-foreground">{"—"}</span>
                       )}
                     </td>