chore(deps-dev): bump handlebars from 4.7.8 to 4.7.9 (#1216)

* chore(deps-dev): bump handlebars from 4.7.8 to 4.7.9

Bumps [handlebars](https://github.com/handlebars-lang/handlebars.js) from 4.7.8 to 4.7.9.
- [Release notes](https://github.com/handlebars-lang/handlebars.js/releases)
- [Changelog](https://github.com/handlebars-lang/handlebars.js/blob/v4.7.9/release-notes.md)
- [Commits](handlebars-lang/handlebars.js@v4.7.8...v4.7.9)

---
updated-dependencies:
- dependency-name: handlebars
  dependency-version: 4.7.9
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

* fix(test): make CalendarView week label test handle cross-month ranges

The regex only matched same-month ranges (e.g. "March 10–16") but failed
when the week spans two months (e.g. "March 29 – April 4, 2026") since
the format includes a month name between the day numbers.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Frontend Developer <frontend-developer@cornerstone.local>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: 3 people

client/src/components/calendar/CalendarView.test.tsx

@@ -417,11 +417,11 @@ describe('CalendarView', () => {
       expect(heading.textContent).toMatch(/^[A-Z][a-z]+ \d{4}$/);
     });
 
-    it('shows week range in week mode when both days in same month', () => {
+    it('shows week range in week mode', () => {
       renderCalendar({ initialSearchParams: 'calendarMode=week' });
       const heading = screen.getByRole('heading', { level: 2 });
-      // Format: "March 10–16, 2024" or similar — contains "–" range separator
-      expect(heading.textContent).toMatch(/\d+[–-]\d+/);
+      // Same month: "March 10–16, 2024" | Cross month: "March 29 – April 4, 2026"
+      expect(heading.textContent).toMatch(/[A-Z][a-z]+ \d+\s*[–-]\s*([A-Z][a-z]+ )?\d+, \d{4}/);
     });
 
     it('updates period label after month navigation', () => {