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

openspec/changes/add-wallet-settlement/specs/frontend-mall/spec.md

@@ -0,0 +1,20 @@
+## ADDED Requirements
+
+### Requirement: Buyer wallet surface
+The mall SHALL render a buyer-center wallet page driven by the selected API adapter through `@vmall/shared`: available and frozen balance with currency, paginated fund entries, a clearly labeled demo recharge form, and a withdrawal request form. Balances and entries SHALL reflect backend state after each action rather than local-only state. The wallet SHALL be a mall API domain with fixed-adapter fallback methods and `LIVE_PICKS` wiring following the established per-domain adapter pattern.
+
+#### Scenario: wallet page loads live state
+- **WHEN** a signed-in buyer opens the wallet page
+- **THEN** balances and the first page of fund entries render from the shared wallet contract
+
+#### Scenario: demo recharge updates balance
+- **WHEN** the buyer submits a demo recharge
+- **THEN** the visible available balance reflects the credit without a reload and the form is visibly marked simulated
+
+#### Scenario: withdrawal freezes visibly
+- **WHEN** the buyer submits a withdrawal request
+- **THEN** the visible summary shows available decreased and frozen increased by the requested amount, and the request appears in the withdrawal list as pending
+
+#### Scenario: fixed adapter remains functional
+- **WHEN** the wallet domain is configured to fixed data
+- **THEN** the wallet page behaves deterministically through the same shared client methods