fix: bank sync fehler sichtbar machen

backend/src/routes/functions.ts

@@ -308,7 +308,16 @@ export default async function functionRoutes(server: FastifyInstance) {
     })
 
     server.post('/functions/services/bankstatementsync', async (req, reply) => {
-        await server.services.bankStatements.run(req.user.tenant_id);
+        const result = await server.services.bankStatements.run(req.user.tenant_id);
+        if (result.errors.length > 0) {
+            const firstError = result.errors[0]?.message
+            return reply.code(502).send({
+                error: 'bank_sync_failed',
+                message: `${result.errors.length} von ${result.accountsFound} Bankkonten konnten nicht synchronisiert werden.${firstError ? ` Ursache: ${firstError}` : ''}`,
+                ...result,
+            })
+        }
+        return result
     })
 
     server.post('/functions/services/prepareincominginvoices', async (req, reply) => {