Every price a student meets on the front end now carries the cadence it is
billed on — at booking, up front, weekly, monthly — so a bare amount can no
longer read as a one-off when it is a recurring charge.
Both registration forms then restate the price and require a second, separate
tick agreeing to pay it, distinct from the policy acceptances above it. The
agreed figure includes the studio HST so it matches Payment::total(), the amount
actually billed; the rate reaches the browser as a new localized `taxRate`.
A weekly reservation is charged per lesson for every week it claims, and a week
another student takes first is simply not claimed, so its total is quoted as a
ceiling ("up to 12 lessons") rather than a promise. Free offerings have nothing
to agree to and show no price block at all.
The formatting and the agreement live in one shared helper (`window.usPricing`,
registered as `us-scheduler-pricing`) so a price reads the same in the booking
form, the class catalogue and the editor preview.
Closes#124
Co-Authored-By: Claude Opus 5 <[email protected]>
