fix: handle all ES geo_point formats from Cesium+

Cesium+ stores geoPoint in multiple Elasticsearch formats (object,
string "lat,lon", array [lon,lat]). Using z.object() caused a ZodError
that silently swallowed the entire Cesium+ response, leaving geoMap
empty and displaying 0 geolocalized transactions.

Replace the strict Zod schema with z.unknown() and a parseGeoPoint()
helper that normalizes all three formats. Also add [GéoFlux] debug
logs to DataService to trace keyMap/duniterKeys/geoMap pipeline steps.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/services/DataService.ts

@@ -47,14 +47,16 @@ async function fetchLiveTransactions(periodDays: number): Promise<{
   let keyMap = new Map<string, string>();
   try {
     keyMap = await getIdentityKeyMap();
+    console.log('[GéoFlux] keyMap:', keyMap.size, 'entrées');
   } catch (err) {
-    console.warn('Identity key map indisponible :', err);
+    console.error('[GéoFlux] Identity key map ERREUR:', err);
   }
 
   // Clés Duniter uniques des émetteurs
   const duniterKeys = [...new Set(
     rawTransfers.map((t) => keyMap.get(t.fromId)).filter(Boolean) as string[]
   )];
+  console.log('[GéoFlux] duniterKeys:', duniterKeys.length);
 
   // Résolution géo par clé Duniter (_id Cesium+)
   let geoMap = new Map<string, { lat: number; lng: number; city: string }>();
@@ -63,8 +65,9 @@ async function fetchLiveTransactions(periodDays: number): Promise<{
     for (const [key, p] of profiles) {
       geoMap.set(key, { lat: p.lat, lng: p.lng, city: p.city });
     }
+    console.log('[GéoFlux] geoMap:', geoMap.size, 'entrées');
   } catch (err) {
-    console.warn('Cesium+ indisponible :', err);
+    console.error('[GéoFlux] Cesium+ ERREUR:', err);
   }
 
   // Seules les transactions avec un profil géo entrent dans le heatmap