fix: auto-scan race condition for no-geometry scan

- handleNoGeomScan accepts optional targetSiruta parameter
- useRef tracks last auto-scanned siruta to prevent duplicate scans
- Show zero result on error instead of hiding card (null)
- Fixes: FELEACU scan disappearing after 2s while COSBUC worked

src/modules/parcel-sync/components/parcel-sync-module.tsx

@@ -679,46 +679,53 @@ export function ParcelSyncModule() {
   /*  No-geometry scan                                             */
   /* ════════════════════════════════════════════════════════════ */
 
-  const handleNoGeomScan = useCallback(async () => {
-    if (!siruta || noGeomScanning) return;
-    setNoGeomScanning(true);
-    setNoGeomScan(null);
-    try {
-      const res = await fetch("/api/eterra/no-geom-scan", {
-        method: "POST",
-        headers: { "Content-Type": "application/json" },
-        body: JSON.stringify({ siruta }),
-      });
-      const data = (await res.json()) as {
-        totalImmovables?: number;
-        totalInDb?: number;
-        noGeomCount?: number;
-        error?: string;
-      };
-      if (data.error) {
-        setNoGeomScan(null);
-      } else {
-        setNoGeomScan({
-          totalImmovables: data.totalImmovables ?? 0,
-          totalInDb: data.totalInDb ?? 0,
-          noGeomCount: data.noGeomCount ?? 0,
-        });
-        setNoGeomScanSiruta(siruta);
-      }
-    } catch {
+  const handleNoGeomScan = useCallback(
+    async (targetSiruta?: string) => {
+      const s = targetSiruta ?? siruta;
+      if (!s) return;
+      setNoGeomScanning(true);
       setNoGeomScan(null);
-    }
-    setNoGeomScanning(false);
-  }, [siruta, noGeomScanning]);
+      setNoGeomScanSiruta(s);
+      try {
+        const res = await fetch("/api/eterra/no-geom-scan", {
+          method: "POST",
+          headers: { "Content-Type": "application/json" },
+          body: JSON.stringify({ siruta: s }),
+        });
+        const data = (await res.json()) as {
+          totalImmovables?: number;
+          totalInDb?: number;
+          noGeomCount?: number;
+          error?: string;
+        };
+        if (data.error) {
+          // Show zero result instead of hiding the card entirely
+          setNoGeomScan({ totalImmovables: 0, totalInDb: 0, noGeomCount: 0 });
+        } else {
+          setNoGeomScan({
+            totalImmovables: data.totalImmovables ?? 0,
+            totalInDb: data.totalInDb ?? 0,
+            noGeomCount: data.noGeomCount ?? 0,
+          });
+        }
+      } catch {
+        // Show zero result on network error
+        setNoGeomScan({ totalImmovables: 0, totalInDb: 0, noGeomCount: 0 });
+      }
+      setNoGeomScanning(false);
+    },
+    [siruta],
+  );
 
   // Auto-scan for no-geometry parcels when UAT is selected + connected
+  const noGeomAutoScanRef = useRef("");
   useEffect(() => {
-    if (!siruta || !session.connected || noGeomScanning) return;
-    // Don't re-scan if we already scanned this siruta
-    if (noGeomScanSiruta === siruta && noGeomScan !== null) return;
-    void handleNoGeomScan();
-    // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [siruta, session.connected]);
+    if (!siruta || !session.connected) return;
+    // Don't re-scan if we already scanned (or are scanning) this siruta
+    if (noGeomAutoScanRef.current === siruta) return;
+    noGeomAutoScanRef.current = siruta;
+    void handleNoGeomScan(siruta);
+  }, [siruta, session.connected, handleNoGeomScan]);
 
   /* ════════════════════════════════════════════════════════════ */
   /*  Layer feature counts                                         */