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/state/askStore.ts

@@ -18,6 +18,8 @@ export interface ChatMessage {
   feedback?: 'up' | 'down';
   /** پیامِ خطا به‌جای پاسخ؛ با «دوباره» همان سوال دوباره فرستاده می‌شود. */
   failedQuestion?: string;
+  /** سهمیه‌ی رایگانِ امروز تمام شده؛ به‌جای «دوباره»، راهِ اشتراک نشان داده می‌شود. */
+  quotaReached?: boolean;
 }
 
 interface AskState {