feat: three nuxt frontends, demo seed, rounding + money-exponent + rate-cast fixes, archived specs

2026-09-17 13:34:38 +08:00
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+# Proposal: catalog-i18n-currency
+
+## Why
+Merchants must manage products (create, edit, publish/unpublish) and shoppers must browse a localized, multi-currency storefront. This phase delivers the catalog core plus the currency infrastructure every price display depends on.
+
+## What changes
+- Schema: categories, products (JSONB i18n name/description), skus (price minor units + currency + stock), currencies (rate_to_base).
+- Public APIs: product list (paged, filter by category/q/shop), product detail by id/slug, category list, currency list + conversion endpoint.
+- Shop-admin APIs: product CRUD, SKU upsert, publish/unpublish transitions.
+- Seed: base currency USD, plus CNY/EUR/JPY; demo categories.
+
+## Non-goals
+- Inventory reservations/warehouses, product variants matrix UI, image upload (URLs only).
+- Full-text search engines; ILIKE search is sufficient for MVP.
+
+## Capabilities
+- `catalog`: categories, products, SKUs, publish lifecycle.
+- `currency`: currency registry and conversion.