fix(geoportal-v2): gate condo-owners on IS_CONDOMINIUM + visible empty state

Two issues from Marius's cladiri screenshots:

1. APARTAMENTE "se încarcă…" sat for ~10s then vanished
   — useEffect fired for every CLADIRI click regardless of whether
   the building was actually a condo. Orchestrator's
   /api/v1/building/condo-owners hit eTerra live, got back an empty
   list for non-condos, returned [], section auto-hid → user saw the
   spinner blink and disappear.

   New gate: useEffect waits for `detail` to land, then reads
   IS_CONDOMINIUM / PARCEL_IS_CONDOMINIUM from enrichment. If neither
   is `1`, skip the fetch entirely. Non-condos no longer pay the 10s
   eTerra round-trip just to show nothing.

2. EMPTY CONDO LISTS WERE HIDING SILENTLY
   — for buildings flagged condo where ANCPI hasn't registered units
   yet, the section would still vanish (`condoOwners.length > 0`
   check). Now: if the fetch returns []  AND the building is a
   condo, render the section with "Fără apartamente înregistrate la
   ANCPI." That's the truthful UX. Same fallback when the fetch
   errors — treat as empty rather than swallow.

Render trigger flipped from
  (condoLoading || (condoOwners && condoOwners.length > 0))
to
  (condoLoading || condoOwners != null)
so the section shows whenever the gate decided to fetch.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/modules/geoportal/v2/feature-info-panel.tsx

@@ -576,8 +576,22 @@ export function FeatureInfoPanel({ feature, onClose, onSelectFeature, basic = fa
   }, [buildings]);
 
   // ── Condo owners for buildings ──────────────────────────
+  // Only fires for buildings flagged IS_CONDOMINIUM=1 (or
+  // PARCEL_IS_CONDOMINIUM=1). For everything else the orchestrator's
+  // eTerra round-trip would take ~10s and come back empty — bad UX.
+  // We wait for `detail` to land so we can read the flag from enrichment.
   useEffect(() => {
     if (basic || !isCladiri || !feature.siruta || !feature.cadastralRef) return;
+    if (!detail) return;
+    const e = (detail.enrichment ?? {}) as Record<string, unknown>;
+    const isCondo =
+      Number(e.IS_CONDOMINIUM ?? 0) === 1 ||
+      Number(e.PARCEL_IS_CONDOMINIUM ?? 0) === 1;
+    if (!isCondo) {
+      setCondoOwners(null);
+      setCondoLoading(false);
+      return;
+    }
     let cancelled = false;
     setCondoOwners(null);
     setCondoLoading(true);
@@ -593,6 +607,9 @@ export function FeatureInfoPanel({ feature, onClose, onSelectFeature, basic = fa
         });
         if (cancelled) return;
         if (!r.ok) {
+          // Treat any failure as "no apartments known" — keep section
+          // visible with a note instead of hiding silently.
+          setCondoOwners([]);
           setCondoLoading(false);
           return;
         }
@@ -608,14 +625,17 @@ export function FeatureInfoPanel({ feature, onClose, onSelectFeature, basic = fa
           setCondoLoading(false);
         }
       } catch {
-        if (!cancelled) setCondoLoading(false);
+        if (!cancelled) {
+          setCondoOwners([]);
+          setCondoLoading(false);
+        }
       }
     };
     void run();
     return () => {
       cancelled = true;
     };
-  }, [isCladiri, feature.siruta, feature.cadastralRef, basic]);
+  }, [isCladiri, feature.siruta, feature.cadastralRef, basic, detail]);
 
   // ── Manual + auto refresh (deep enrich) ─────────────────
   const refreshFromAncpi = useCallback(
@@ -1164,8 +1184,11 @@ export function FeatureInfoPanel({ feature, onClose, onSelectFeature, basic = fa
             </div>
           )}
 
-          {/* Apartamente (cladiri only) */}
-          {!loading && isCladiri && (condoLoading || (condoOwners && condoOwners.length > 0)) && (
+          {/* Apartamente (cladiri only — only mounted when IS_CONDOMINIUM=1
+              per the gating useEffect; non-condos skip the fetch entirely
+              so we never sit on a 10s eTerra round-trip just to discover
+              there's nothing to show). */}
+          {!loading && isCladiri && (condoLoading || condoOwners != null) && (
             <div className="mx-2 my-2">
               <p className="mb-1 flex items-center gap-1 px-1 text-[10px] font-semibold uppercase tracking-wider text-muted-foreground">
                 <Users className="h-3 w-3" />
@@ -1181,6 +1204,11 @@ export function FeatureInfoPanel({ feature, onClose, onSelectFeature, basic = fa
                   <Loader2 className="h-3 w-3 animate-spin" /> se încarcă…
                 </div>
               )}
+              {!condoLoading && condoOwners != null && condoOwners.length === 0 && (
+                <p className="px-1 text-[11px] italic text-muted-foreground">
+                  Fără apartamente înregistrate la ANCPI.
+                </p>
+              )}
               {condoOwners && condoOwners.length > 0 && (
                 <div className="space-y-1.5">
                   {condoOwners.map((u, i) => (