docs(openspec): propose 8 tigshop migration changes (P0-P7) + migration plan

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Chengdong Zhang
2026-09-23 13:30:36 +08:00
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## ADDED Requirements
### Requirement: Merchant freight template management
Shop-admin SHALL provide a freight template management page for the signed-in shop user's own shop only, listing the shop's templates with their default flag, always-free toggle, pricing method, minor-unit fees, integer unit sizes, free-shipping threshold, and region rules. Create, edit, default-toggle, region-rule editing, and delete SHALL go through the shared `@vmall/shared` contract, and making a template default SHALL reflect the server's single-default outcome. The page SHALL use `@vmall/ui` primitives and shared tokens.
#### Scenario: manage a template and its region rules
- **WHEN** a shop user creates a by-piece template, adds a region rule with higher fees, and saves
- **THEN** reloading the page shows the template and rule from the backend
#### Scenario: default template toggle
- **WHEN** a shop user marks a second template as default
- **THEN** the page shows exactly that template as default after the server confirms
### Requirement: Merchant shipping company selection
When a shop user ships an order from the fulfillment view, shop-admin SHALL offer the shipping companies from the shared dictionary and require a selection before marking the order shipped. The chosen company SHALL reach the backend through the shared contract and appear on the order after shipping.
#### Scenario: ship with a selected company
- **WHEN** a shop user selects a shipping company and confirms shipment
- **THEN** the order shows the shipped state and the selected company