feat(03-02): add DailyPlanTaskRow and ProgressCard widgets

- DailyPlanTaskRow: task name, tappable room tag, relative date (coral if overdue), optional checkbox, no row-tap
- ProgressCard: "X von Y erledigt" with LinearProgressIndicator

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lib/features/home/presentation/progress_card.dart

@@ -0,0 +1,51 @@
+import 'package:flutter/material.dart';
+
+import 'package:household_keeper/l10n/app_localizations.dart';
+
+/// A progress banner card showing "X von Y erledigt" with a linear
+/// progress bar. Displayed at the top of the daily plan screen.
+class ProgressCard extends StatelessWidget {
+  const ProgressCard({
+    super.key,
+    required this.completed,
+    required this.total,
+  });
+
+  final int completed;
+  final int total;
+
+  @override
+  Widget build(BuildContext context) {
+    final l10n = AppLocalizations.of(context);
+    final theme = Theme.of(context);
+    final colorScheme = theme.colorScheme;
+
+    return Card(
+      margin: const EdgeInsets.all(16),
+      child: Padding(
+        padding: const EdgeInsets.all(16),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Text(
+              l10n.dailyPlanProgress(completed, total),
+              style: theme.textTheme.titleMedium?.copyWith(
+                fontWeight: FontWeight.bold,
+              ),
+            ),
+            const SizedBox(height: 12),
+            ClipRRect(
+              borderRadius: BorderRadius.circular(4),
+              child: LinearProgressIndicator(
+                value: total > 0 ? completed / total : 0.0,
+                minHeight: 8,
+                backgroundColor: colorScheme.surfaceContainerHighest,
+                color: colorScheme.primary,
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}