Full Persian calendar:
- New JalaliDateField — Shamsi popover picker (Saturday-first weeks,
Persian digits, امروز shortcut); wire format stays ISO Gregorian
YYYY-MM-DD. Falls back to the native input for the en locale.
- Replaces all 5 native type="date" inputs (Gregorian-only pickers):
reservations, expenses from/to, reports from/to.
- Reservations list date now renders Jalali instead of the raw ISO
string; branches purge timestamp now formats with fa-IR.
Responsive shell (mobile + tablet):
- New MobileNav: hamburger in the topbar (< md) opening an RTL-aware
slide-over drawer with all nav destinations, permission-filtered,
Escape/backdrop close and body scroll lock.
- Desktop sidebar hidden below md; header center cluster (clock/plan)
hidden below md; language switcher hidden below sm.
- Main content padding scales p-3 → p-4 → p-6.
- Verified at 375px and 768px: no horizontal overflow, drawer and
Jalali picker fully functional.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>