Support / FAQ page (with IAP purchase, restore, refund guidance)

## Summary

Create a public **Support / FAQ page** on the JazzJam website, covering general app questions and — critically — In-App Purchase topics: how to purchase, how to restore purchases, and refund/cancellation guidance.

## Business Value

App stores require a reachable **support URL** on the listing of any app with paid features. Beyond the compliance need, a public FAQ deflects purchase-related support load (restore purchases, "I paid but don't see it", refunds) and builds buyer confidence before install.

## Scope

### In scope
- A support/FAQ page reachable from the site navigation
- IAP section: how to buy Pro Unlock, how to restore purchases, refund/cancellation policy pointers, "purchased but not unlocked" troubleshooting
- General app FAQ entries
- A contact/support route (email or form)

### Out of scope
- TOS and Privacy Policy content — covered by #16
- In-app help/onboarding (app repo)

## Acceptance Criteria

- [ ] Support/FAQ page exists and is linked from site navigation
- [ ] Page includes an IAP section covering purchase, restore, and refund/cancellation
- [ ] A working contact/support route is present
- [ ] Page renders correctly on desktop, tablet, and mobile

## Manual Verification

1. From the site navigation, open the Support/FAQ page — confirm it loads
2. Locate the IAP section — confirm purchase, restore-purchases, and refund/cancellation guidance are present
3. Use the contact/support route — confirm it works (email opens / form submits)
4. Confirm the page URL is suitable for use as the store listing's support URL