feat(app): clean architecture with typed repositories, DTO models and calendar event logos

FinlyticApp/lib/features/calendar/widgets/calendar_event_item.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import '../../../core/theme/app_theme.dart';
+import '../../../core/widgets/asset_logo_widget.dart';
 import '../../../core/widgets/glass_container.dart';
 import '../../../core/widgets/status_badge.dart';
 
@@ -11,11 +12,13 @@ class CalendarEventItem extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final isin = event['isin']?.toString() ?? '';
     final symbol = event['symbol']?.toString() ?? 'ASSET';
     final company = event['companyName']?.toString() ?? symbol;
     final type = event['eventType']?.toString() ?? 'Earnings';
     final desc = event['description']?.toString() ?? '';
     final dateStr = event['eventDate']?.toString() ?? '';
+    final image = event['image']?.toString() ?? (isin.isNotEmpty ? '/api/v1/logo/$isin' : null);
 
     Color badgeColor = AppTheme.primaryEmerald;
     if (type == 'ExDividend') badgeColor = AppTheme.accentCyan;
@@ -25,16 +28,11 @@ class CalendarEventItem extends StatelessWidget {
       margin: const EdgeInsets.only(bottom: 10),
       child: Row(
         children: [
-          Container(
-            padding: const EdgeInsets.all(10),
-            decoration: BoxDecoration(
-              color: badgeColor.withValues(alpha: 0.15),
-              borderRadius: BorderRadius.circular(10),
-            ),
-            child: Icon(
-              type == 'Earnings' ? Icons.bar_chart : (type == 'ExDividend' ? Icons.content_cut : Icons.payments),
-              color: badgeColor,
-            ),
+          AssetLogoWidget(
+            symbolOrName: isin.isNotEmpty ? isin : company,
+            imageUrl: image,
+            size: 36,
+            enableHero: false,
           ),
           const SizedBox(width: 14),
           Expanded(

FinlyticApp/lib/features/calendar/widgets/calendar_event_tile.dart

@@ -68,7 +68,7 @@ class CalendarEventTile extends StatelessWidget {
               Expanded(
                 child: Row(
                   children: [
-                    AssetLogoWidget(symbolOrName: companyName, imageUrl: image, size: 28),
+                    AssetLogoWidget(symbolOrName: isin.isNotEmpty ? isin : companyName, imageUrl: image, size: 28, enableHero: false),
                     const SizedBox(width: 8),
                     Expanded(
                       child: Column(