Add Google calendar API and workspace sync

lib/utils.dart

@@ -58,6 +58,32 @@ DateTime? parseDate(String value) {
   return DateTime(year, month, day);
 }
 
+DateTime? parseGoogleEventDate(Map<String, dynamic> value) {
+  final dateTime = value['dateTime'] as String?;
+  if (dateTime != null && dateTime.trim().isNotEmpty) {
+    return DateTime.tryParse(dateTime)?.toLocal();
+  }
+
+  final date = value['date'] as String?;
+  if (date == null || date.trim().isEmpty) return null;
+  final parsed = DateTime.tryParse(date);
+  if (parsed == null) return null;
+  return DateTime(parsed.year, parsed.month, parsed.day);
+}
+
+Color parseGoogleColor(String? value) {
+  final raw = value?.trim();
+  if (raw == null || !raw.startsWith('#')) {
+    return const Color(0xFF4285F4);
+  }
+
+  final hex = raw.substring(1);
+  if (hex.length != 6) return const Color(0xFF4285F4);
+  final colorValue = int.tryParse(hex, radix: 16);
+  if (colorValue == null) return const Color(0xFF4285F4);
+  return Color(0xFF000000 | colorValue);
+}
+
 String uniqueId() => DateTime.now().microsecondsSinceEpoch.toString();
 
 String normalizeJarvisUrl(String value) {