parent report page with two charts, Jalali birth date picker, user ID and invoices in profile

- the parents section is gone: no parent login, invite codes or "I'm a parent" button;
  "گزارشِ والدین" in the profile shows the week against the previous one (praise line,
  six tiles, minutes-per-day and right/wrong-per-day charts, a table of the numbers)
- birth date as day / month / year selects (Jalali, leap Esfand handled) instead of age;
  adults (19+) are asked which grade's math they want to learn
- user ID under the name, copyable
- "پرداخت‌ها و فاکتورها": every order with invoice number, discount, amount and reference code
- tutor: when the free daily quota runs out, a button to the subscription page instead of "retry"

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/nav/routes.ts

@@ -14,7 +14,10 @@ export type Route =
   | { name: 'characters' }
   | { name: 'streak' }
   | { name: 'support' }
-  | { name: 'family' }
+  /** «گزارشِ والدین»: والد پیشرفتِ هفته را در حسابِ خودِ دانش‌آموز می‌بیند. */
+  | { name: 'report' }
+  /** پرداخت‌ها و فاکتورهای خودِ کاربر. */
+  | { name: 'invoices' }
   | { name: 'invite' }
   | { name: 'register' };