A multi-game Purchase is now treated as an *unsplittable* bundle (one
price, whole-purchase refund). Independently-refundable multi-item orders
(e.g. a Steam cart) are instead recorded as N separate single-game
purchases, so per-game pricing and per-game refunds work with the
existing single-purchase machinery — no through-model needed.
Add-purchase form (single form, single endpoint):
- 1 game: unchanged.
- 2+ games: a "Separate price per game" toggle appears (default off =
one bundle price). On, the bundle Price hides and one price input per
game appears; the view creates one single-game Purchase each from
price_for_game_<id>. `price` is now optional so combined mode still
validates.
Split action:
- A Split button on multi-game purchase rows opens a confirmation modal
that replaces the bundle with one single-game purchase per game (price
split evenly, needs_price_update set), then HX-Redirects to the list.
New general-purpose `selection-fields` custom element renders one synced
form field per selected item of a source SearchSelect (consuming the
existing search-select:change contract); it knows nothing about prices,
so it is reusable. Behavior in ts/elements/selection-fields.ts.
Adds the bundle-vs-separate-purchases convention to CLAUDE.md, a split
icon, and unit + Playwright e2e coverage.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
