chore: replace manual SQL migrations with node-pg-migrate

backend/migrations/1700000000000_baseline-schema.js

@@ -0,0 +1,129 @@
+exports.up = (pgm) => {
+  pgm.sql(`
+    CREATE TABLE IF NOT EXISTS items (
+      id SERIAL PRIMARY KEY,
+      name TEXT NOT NULL,
+      description TEXT,
+      price_cents INTEGER NOT NULL,
+      status TEXT NOT NULL DEFAULT 'available',
+      reserved_until TIMESTAMPTZ,
+      sold_at TIMESTAMPTZ,
+      paypal_order_id TEXT,
+      created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+    );
+
+    CREATE TABLE IF NOT EXISTS item_images (
+      id SERIAL PRIMARY KEY,
+      item_id INTEGER NOT NULL REFERENCES items(id) ON DELETE CASCADE,
+      image_path TEXT NOT NULL,
+      sort_order INTEGER NOT NULL DEFAULT 0,
+      created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+    );
+
+    CREATE TABLE IF NOT EXISTS customers (
+      id SERIAL PRIMARY KEY,
+      email TEXT NOT NULL UNIQUE,
+      password_hash TEXT NOT NULL,
+      name TEXT,
+      email_verified BOOLEAN NOT NULL DEFAULT false,
+      marketing_consent BOOLEAN NOT NULL DEFAULT false,
+      marketing_consent_at TIMESTAMPTZ,
+      marketing_consent_text TEXT,
+      unsubscribe_token TEXT NOT NULL UNIQUE,
+      created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+    );
+
+    CREATE TABLE IF NOT EXISTS customer_sessions (
+      token TEXT PRIMARY KEY,
+      customer_id INTEGER NOT NULL REFERENCES customers(id) ON DELETE CASCADE,
+      expires_at TIMESTAMPTZ NOT NULL,
+      created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+    );
+
+    CREATE TABLE IF NOT EXISTS customer_tokens (
+      token TEXT PRIMARY KEY,
+      customer_id INTEGER NOT NULL REFERENCES customers(id) ON DELETE CASCADE,
+      kind TEXT NOT NULL,
+      expires_at TIMESTAMPTZ NOT NULL,
+      created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+    );
+
+    CREATE TABLE IF NOT EXISTS admin_settings (
+      key TEXT PRIMARY KEY,
+      value TEXT NOT NULL,
+      updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
+    );
+    INSERT INTO admin_settings (key, value) VALUES ('cart_expiry_hours', '24') ON CONFLICT (key) DO NOTHING;
+
+    CREATE TABLE IF NOT EXISTS carts (
+      id SERIAL PRIMARY KEY,
+      customer_id INTEGER NOT NULL UNIQUE REFERENCES customers(id) ON DELETE CASCADE,
+      created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+      updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
+    );
+
+    CREATE TABLE IF NOT EXISTS cart_items (
+      id SERIAL PRIMARY KEY,
+      cart_id INTEGER NOT NULL REFERENCES carts(id) ON DELETE CASCADE,
+      item_id INTEGER NOT NULL UNIQUE REFERENCES items(id) ON DELETE CASCADE,
+      added_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+      expires_at TIMESTAMPTZ NOT NULL,
+      last_reminder_sent_at TIMESTAMPTZ
+    );
+
+    CREATE TABLE IF NOT EXISTS shipping_addresses (
+      id SERIAL PRIMARY KEY,
+      customer_id INTEGER NOT NULL REFERENCES customers(id) ON DELETE CASCADE,
+      full_name TEXT NOT NULL,
+      address_line1 TEXT NOT NULL,
+      address_line2 TEXT,
+      city TEXT NOT NULL,
+      state TEXT NOT NULL,
+      postal_code TEXT NOT NULL,
+      country TEXT NOT NULL DEFAULT 'US',
+      is_default BOOLEAN NOT NULL DEFAULT false,
+      usps_validated BOOLEAN NOT NULL DEFAULT false,
+      usps_standardized JSONB,
+      created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+    );
+
+    CREATE TABLE IF NOT EXISTS checkouts (
+      id SERIAL PRIMARY KEY,
+      customer_id INTEGER REFERENCES customers(id) ON DELETE SET NULL,
+      shipping_address_id INTEGER REFERENCES shipping_addresses(id) ON DELETE SET NULL,
+      processor TEXT NOT NULL,
+      processor_order_id TEXT,
+      amount_cents INTEGER,
+      status TEXT NOT NULL DEFAULT 'pending',
+      raw_event JSONB,
+      created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+    );
+
+    CREATE TABLE IF NOT EXISTS checkout_items (
+      checkout_id INTEGER NOT NULL REFERENCES checkouts(id) ON DELETE CASCADE,
+      item_id INTEGER NOT NULL REFERENCES items(id) ON DELETE CASCADE,
+      price_cents INTEGER NOT NULL,
+      PRIMARY KEY (checkout_id, item_id)
+    );
+
+    CREATE TABLE IF NOT EXISTS orders (
+      id SERIAL PRIMARY KEY,
+      item_id INTEGER REFERENCES items(id),
+      customer_id INTEGER REFERENCES customers(id) ON DELETE SET NULL,
+      checkout_id INTEGER REFERENCES checkouts(id) ON DELETE SET NULL,
+      processor TEXT NOT NULL,
+      processor_order_id TEXT,
+      amount_cents INTEGER,
+      status TEXT,
+      raw_event JSONB,
+      created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+    );
+  `);
+};
+
+// Deliberately no destructive down migration for the baseline — reverting this
+// would drop every table and all data. If you ever need to roll back past this
+// point, do it manually and deliberately, not via `migrate:down`.
+exports.down = (pgm) => {
+  pgm.sql(`SELECT 1;`);
+};