feat(diary): editing of previous and current finished days

test/features/diary/presentation/diary_edit_access_test.dart

@@ -0,0 +1,59 @@
+import 'package:eatvio_app/features/diary/presentation/diary_edit_access.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  final now = DateTime(2026, 9, 30, 12);
+
+  bool canEdit({
+    bool isConsultantView = false,
+    bool isDiaryCommented = false,
+    bool isDiaryFinished = false,
+    int closed = 0,
+    String diaryDate = '2026-09-28',
+  }) {
+    return canEditDiaryDay(
+      isConsultantView: isConsultantView,
+      isDiaryCommented: isDiaryCommented,
+      isDiaryFinished: isDiaryFinished,
+      closed: closed,
+      diaryDate: diaryDate,
+      now: now,
+    );
+  }
+
+  test('finished today and yesterday stay editable', () {
+    expect(canEdit(isDiaryFinished: true, diaryDate: '2026-09-30'), isTrue);
+    expect(canEdit(isDiaryFinished: true, diaryDate: '2026-09-29'), isTrue);
+  });
+
+  test('finished days older than yesterday stay read-only', () {
+    expect(canEdit(isDiaryFinished: true, diaryDate: '2026-09-28'), isFalse);
+  });
+
+  test('commented days stay read-only inside the window', () {
+    expect(canEdit(isDiaryCommented: true, diaryDate: '2026-09-30'), isFalse);
+    expect(
+      canEdit(
+        isDiaryCommented: true,
+        isDiaryFinished: true,
+        diaryDate: '2026-09-29',
+      ),
+      isFalse,
+    );
+  });
+
+  test('an open day outside the window stays editable', () {
+    expect(canEdit(diaryDate: '2026-09-01'), isTrue);
+  });
+
+  test('a closed flag blocks editing even inside the window', () {
+    expect(
+      canEdit(isDiaryFinished: true, closed: 1, diaryDate: '2026-09-30'),
+      isFalse,
+    );
+  });
+
+  test('consultant view stays read-only', () {
+    expect(canEdit(isConsultantView: true, diaryDate: '2026-09-30'), isFalse);
+  });
+}