db: add initial schema and catalog wave2 migrations

database/migrations/001_init.sql

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+CREATE TABLE IF NOT EXISTS users (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    email TEXT NOT NULL UNIQUE,
+    passwordHash TEXT NOT NULL,
+    name TEXT NOT NULL DEFAULT '',
+    isAdmin INTEGER NOT NULL DEFAULT 0,
+    createdAt TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS categories (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    name TEXT NOT NULL,
+    slug TEXT NOT NULL UNIQUE,
+    description TEXT NOT NULL DEFAULT ''
+);
+
+CREATE TABLE IF NOT EXISTS products (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    categoryId INTEGER REFERENCES categories(id) ON DELETE SET NULL,
+    name TEXT NOT NULL,
+    slug TEXT NOT NULL UNIQUE,
+    description TEXT NOT NULL DEFAULT '',
+    priceCents INTEGER NOT NULL DEFAULT 0,
+    stockQuantity INTEGER NOT NULL DEFAULT 0,
+    imageUrl TEXT NOT NULL DEFAULT '',
+    isActive INTEGER NOT NULL DEFAULT 1,
+    createdAt TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS orders (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    userId INTEGER NOT NULL REFERENCES users(id),
+    status TEXT NOT NULL DEFAULT 'pending',
+    totalCents INTEGER NOT NULL DEFAULT 0,
+    currency TEXT NOT NULL DEFAULT 'usd',
+    stripeSessionId TEXT,
+    createdAt TEXT NOT NULL,
+    paidAt TEXT,
+    fulfilledAt TEXT,
+    cancelledAt TEXT
+);
+
+CREATE TABLE IF NOT EXISTS orderItems (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    orderId INTEGER NOT NULL REFERENCES orders(id) ON DELETE CASCADE,
+    productId INTEGER REFERENCES products(id) ON DELETE SET NULL,
+    productName TEXT NOT NULL,
+    unitPriceCents INTEGER NOT NULL,
+    quantity INTEGER NOT NULL
+);
+
+CREATE INDEX IF NOT EXISTS idxProductsCategory ON products(categoryId);
+CREATE INDEX IF NOT EXISTS idxOrdersUser ON orders(userId);
+CREATE INDEX IF NOT EXISTS idxOrderItemsOrder ON orderItems(orderId);

database/migrations/002_wave2.sql

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+-- Wave 2: variants, attributes, coupons, reviews, wishlist, roles, mail-ready orders
+
+CREATE TABLE IF NOT EXISTS attributes (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    name TEXT NOT NULL,
+    slug TEXT NOT NULL UNIQUE
+);
+
+CREATE TABLE IF NOT EXISTS attributeValues (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    attributeId INTEGER NOT NULL REFERENCES attributes(id) ON DELETE CASCADE,
+    value TEXT NOT NULL,
+    slug TEXT NOT NULL,
+    position INTEGER NOT NULL DEFAULT 0
+);
+CREATE UNIQUE INDEX IF NOT EXISTS idxAttributeValueUnique ON attributeValues(attributeId, slug);
+
+CREATE TABLE IF NOT EXISTS productVariants (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    productId INTEGER NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    sku TEXT NOT NULL UNIQUE,
+    priceCents INTEGER NOT NULL DEFAULT 0,
+    stockQuantity INTEGER NOT NULL DEFAULT 0,
+    isActive INTEGER NOT NULL DEFAULT 1,
+    createdAt TEXT NOT NULL
+);
+CREATE INDEX IF NOT EXISTS idxVariantsProduct ON productVariants(productId);
+
+CREATE TABLE IF NOT EXISTS variantOptions (
+    variantId INTEGER NOT NULL REFERENCES productVariants(id) ON DELETE CASCADE,
+    attributeId INTEGER NOT NULL REFERENCES attributes(id) ON DELETE CASCADE,
+    attributeValueId INTEGER NOT NULL REFERENCES attributeValues(id) ON DELETE CASCADE,
+    PRIMARY KEY (variantId, attributeId)
+);
+CREATE INDEX IF NOT EXISTS idxVariantOptionsValue ON variantOptions(attributeValueId);
+
+CREATE TABLE IF NOT EXISTS coupons (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    code TEXT NOT NULL UNIQUE,
+    type TEXT NOT NULL DEFAULT 'percent',
+    value INTEGER NOT NULL DEFAULT 0,
+    minSubtotalCents INTEGER NOT NULL DEFAULT 0,
+    maxRedemptions INTEGER,
+    redeemedCount INTEGER NOT NULL DEFAULT 0,
+    startsAt TEXT,
+    expiresAt TEXT,
+    isActive INTEGER NOT NULL DEFAULT 1,
+    createdAt TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS reviews (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    productId INTEGER NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    userId INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    rating INTEGER NOT NULL,
+    title TEXT NOT NULL DEFAULT '',
+    body TEXT NOT NULL DEFAULT '',
+    status TEXT NOT NULL DEFAULT 'pending',
+    createdAt TEXT NOT NULL,
+    moderatedAt TEXT
+);
+CREATE INDEX IF NOT EXISTS idxReviewsProduct ON reviews(productId, status);
+CREATE UNIQUE INDEX IF NOT EXISTS idxReviewsUserProduct ON reviews(userId, productId);
+
+CREATE TABLE IF NOT EXISTS wishlistItems (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    userId INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    productId INTEGER NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    createdAt TEXT NOT NULL
+);
+CREATE UNIQUE INDEX IF NOT EXISTS idxWishlistUserProduct ON wishlistItems(userId, productId);
+
+ALTER TABLE users ADD COLUMN role TEXT NOT NULL DEFAULT 'customer';
+UPDATE users SET role = 'admin' WHERE isAdmin = 1;
+
+ALTER TABLE orders ADD COLUMN discountCents INTEGER NOT NULL DEFAULT 0;
+ALTER TABLE orders ADD COLUMN couponCode TEXT;
+
+ALTER TABLE orderItems ADD COLUMN variantId INTEGER;
+ALTER TABLE orderItems ADD COLUMN variantLabel TEXT NOT NULL DEFAULT '';