james
cdfb1b06f2
Sync the group-buying capability plus the order, frontend-mall, and frontend-shop-admin requirements into the main specs, and write the capability Purpose the archive leaves as a placeholder. This closes the last of the five planned marketing changes.
30 lines
2.2 KiB
Markdown
30 lines
2.2 KiB
Markdown
## Why
|
|
|
|
The group-buying page displays invented participant counts but no group can be opened, joined, completed, or expired. This capability requires a visible lifecycle tied to checkout intent and payment-time seat claims.
|
|
|
|
## What Changes
|
|
|
|
- Add shop-managed group-buying activities with localized presentation data, fixed minor-unit group price, required paid-member count, eligibility window, and a per-order item limit of quantity 1 for the activity SKU.
|
|
- Add concrete group instances that can be opened, joined atomically up to capacity, succeed on reaching capacity, or expire.
|
|
- Bind qualifying orders to a group instance at checkout, resolve group price server-side, and expose activity and open-group discovery to customers.
|
|
- Claim paid membership at payment, not at cart checkout. Pending-payment cancellation restores SKU stock only and does not roll back paid seats. If the cancelled order opened a group that still has zero paid members, that empty group becomes `cancelled` and is no longer joinable. Paid groups that expire without filling remain identifiable for a later refund workflow.
|
|
- Compose exclusively with other promotions: a SKU MUST NOT overlap an active flash sale; a shop order with group-buy intent SHALL reject a coupon. Restate coupon and flash-sale checkout/cancel clauses in this change's `order` spec.
|
|
- Replace the display-only mall fixture and add shop-admin activity management.
|
|
|
|
## Capabilities
|
|
|
|
### New Capabilities
|
|
- `group-buying`: Timed group-buying activities, group-instance lifecycle, joining, and public discovery.
|
|
|
|
### Modified Capabilities
|
|
- `order`: Checkout validates group participation and snapshots group-buy pricing.
|
|
- `frontend-mall`: Group-buying pages use live activity and group state.
|
|
- `frontend-shop-admin`: Shops manage their own group-buying activities.
|
|
|
|
## Non-goals
|
|
|
|
Refund execution, shipping holds, multi-product groups, platform campaigns, referral incentives, stacking coupons onto group-priced shop orders, and overlapping flash-sale pricing on the same SKU are excluded.
|
|
|
|
## Impact
|
|
|
|
Adds Rust marketing state-machine module/migrations, shared contract/locales, mall and shop-admin routes, and lifecycle/concurrency integration tests. |