feat: add StatusScreen for event log viewing

lib/status_screen.dart

@@ -0,0 +1,77 @@
+import 'package:flutter/material.dart';
+
+class StatusScreen extends StatelessWidget {
+  const StatusScreen({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('Event Log'),
+      ),
+      body: ListView(
+        padding: const EdgeInsets.all(16),
+        children: [
+          Card(
+            child: ListTile(
+              leading: const Icon(Icons.info, color: Colors.blue),
+              title: const Text('Status Screen'),
+              subtitle: const Text('Event logs will be displayed here'),
+            ),
+          ),
+          const SizedBox(height: 16),
+          _buildPlaceholderEvent('LOCATION', '37.7749', '-122.4194'),
+          _buildPlaceholderEvent('SYNC', 'Location sent to server', ''),
+          _buildPlaceholderEvent('HEARTBEAT', 'Heartbeat fired', ''),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildPlaceholderEvent(String type, String detail, String extra) {
+    return Card(
+      child: ListTile(
+        leading: Icon(
+          _getIconForType(type),
+          color: _getColorForType(type),
+        ),
+        title: Text(type),
+        subtitle: Text('$detail $extra'.trim()),
+      ),
+    );
+  }
+
+  IconData _getIconForType(String type) {
+    switch (type) {
+      case 'LOCATION':
+        return Icons.location_on;
+      case 'SYNC':
+        return Icons.cloud_done;
+      case 'HEARTBEAT':
+        return Icons.favorite;
+      case 'FILTERED':
+        return Icons.filter_alt;
+      case 'ERROR':
+        return Icons.error;
+      default:
+        return Icons.info;
+    }
+  }
+
+  Color _getColorForType(String type) {
+    switch (type) {
+      case 'LOCATION':
+        return Colors.green;
+      case 'SYNC':
+        return Colors.blue;
+      case 'HEARTBEAT':
+        return Colors.orange;
+      case 'FILTERED':
+        return Colors.grey;
+      case 'ERROR':
+        return Colors.red;
+      default:
+        return Colors.grey;
+    }
+  }
+}