feat(App): update Finlytic Flutter app UI and blocs

FinlyticApp/lib/core/utils/time_utils.dart

@@ -0,0 +1,59 @@
+/// Universal time formatting helper to format relative timestamps cleanly for UI displays.
+class TimeUtils {
+  /// Converts ISO-8601 or DateTime inputs to localized, readable relative time strings.
+  /// 
+  /// Examples:
+  /// - Under 60 minutes: "Vor 15 Min.", "Vor 42 Min."
+  /// - 1 hour or more: "Vor 1 Std.", "Vor 1 Std. 15 Min.", "Vor 3 Std. 45 Min."
+  /// - Yesterday: "Gestern"
+  /// - Older: "22.07.2026"
+  static String formatRelativeTime(dynamic rawDate) {
+    if (rawDate == null) return '';
+    final str = rawDate.toString().trim();
+    if (str.isEmpty) return '';
+
+    DateTime dt;
+    try {
+      dt = DateTime.parse(str).toLocal();
+    } catch (_) {
+      // Return raw string if already formatted or non-date string
+      return str;
+    }
+
+    final now = DateTime.now();
+    final rawDiff = now.difference(dt);
+    
+    // If the timestamp is in the future (e.g. slight clock skew or scraper timezone issues), cap it to 0
+    final duration = rawDiff.isNegative ? Duration.zero : rawDiff;
+    final totalMinutes = duration.inMinutes;
+
+    if (totalMinutes < 1) {
+      return 'Vor 1 Min.';
+    }
+
+    if (totalMinutes < 60) {
+      return 'Vor $totalMinutes Min.';
+    }
+
+    final hours = duration.inHours;
+    if (hours < 24) {
+      final remainingMinutes = totalMinutes % 60;
+      if (remainingMinutes == 0) {
+        return 'Vor $hours Std.';
+      } else {
+        return 'Vor $hours Std. $remainingMinutes Min.';
+      }
+    }
+
+    final days = duration.inDays;
+    if (days == 1) {
+      return 'Gestern';
+    } else if (days < 7) {
+      return 'Vor $days Tagen';
+    }
+
+    final dayStr = dt.day.toString().padLeft(2, '0');
+    final monthStr = dt.month.toString().padLeft(2, '0');
+    return '$dayStr.$monthStr.${dt.year}';
+  }
+}