Layout changes, fix bugs in new entry page

lib/components/dashboard/latest_loco_changes_panel.dart

@@ -0,0 +1,107 @@
+import 'package:flutter/material.dart';
+import 'package:mileograph_flutter/services/data_service.dart';
+import 'package:provider/provider.dart';
+
+class LatestLocoChangesPanel extends StatefulWidget {
+  const LatestLocoChangesPanel({super.key});
+
+  @override
+  State<LatestLocoChangesPanel> createState() => _LatestLocoChangesPanelState();
+}
+
+class _LatestLocoChangesPanelState extends State<LatestLocoChangesPanel> {
+  late final ScrollController _controller;
+
+  @override
+  void initState() {
+    super.initState();
+    _controller = ScrollController();
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final data = context.watch<DataService>();
+    final changes = data.latestLocoChanges;
+    final isLoading = data.isLatestLocoChangesLoading;
+    final textTheme = Theme.of(context).textTheme;
+
+    return Card(
+      clipBehavior: Clip.antiAlias,
+      child: Padding(
+        padding: const EdgeInsets.all(16),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.stretch,
+          children: [
+            Text(
+              'Latest loco changes',
+              style: textTheme.titleMedium?.copyWith(fontWeight: FontWeight.w700),
+            ),
+            const SizedBox(height: 8),
+            if (isLoading && changes.isEmpty)
+              const Padding(
+                padding: EdgeInsets.all(12.0),
+                child: Center(child: CircularProgressIndicator()),
+              )
+            else if (changes.isEmpty)
+              Padding(
+                padding: const EdgeInsets.symmetric(vertical: 8.0),
+                child: Text(
+                  'No recent loco changes yet.',
+                  style: textTheme.bodyMedium,
+                ),
+              )
+            else
+              SizedBox(
+                height: 260,
+                child: Scrollbar(
+                  controller: _controller,
+                  child: ListView.separated(
+                    controller: _controller,
+                    itemCount: changes.length,
+                    separatorBuilder: (_, __) => const Divider(height: 1),
+                    itemBuilder: (context, index) {
+                      final change = changes[index];
+                      return ListTile(
+                        dense: true,
+                        contentPadding: EdgeInsets.zero,
+                        title: Text(
+                          change.locoLabel,
+                          style: textTheme.titleSmall?.copyWith(
+                            fontWeight: FontWeight.w600,
+                          ),
+                        ),
+                        subtitle: Column(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          children: [
+                            Text('${change.changeLabel}: ${change.valueLabel}'),
+                            Text(
+                              change.approvedDateLabel,
+                              style: textTheme.labelSmall?.copyWith(
+                                color: textTheme.bodySmall?.color?.withValues(alpha: 0.7),
+                              ),
+                            ),
+                          ],
+                        ),
+                        trailing: change.approvedBy.isEmpty
+                            ? null
+                            : Text(
+                                change.approvedBy,
+                                style: textTheme.labelSmall,
+                              ),
+                      );
+                    },
+                  ),
+                ),
+              ),
+          ],
+        ),
+      ),
+    );
+  }
+}