feat: scaffold Antonym fashion store

Anonymous Bitcoin-only fashion e-commerce with:
- Vue 3 + Tailwind 4 frontend with glassmorphism dark/light design system
- Express 5 + SQLite backend with BTCPay Server integration
- Nostr identity (NIP-07/keypair) for anonymous purchase tracking
- ChaCha20-Poly1305 encrypted shipping addresses
- Admin panel with order/product/stock management
- SVG logo splash animation with clip-path reveal
- 5 seeded products across 4 categories

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

server/db/schema.ts

@@ -0,0 +1,53 @@
+import type Database from 'better-sqlite3'
+
+export function initSchema(db: Database.Database): void {
+  db.exec(`
+    CREATE TABLE IF NOT EXISTS products (
+      id TEXT PRIMARY KEY,
+      name TEXT NOT NULL,
+      slug TEXT NOT NULL UNIQUE,
+      description TEXT NOT NULL DEFAULT '',
+      price_sats INTEGER NOT NULL,
+      images TEXT NOT NULL DEFAULT '[]',
+      sizes TEXT NOT NULL DEFAULT '[]',
+      category TEXT NOT NULL DEFAULT 'general',
+      is_active INTEGER NOT NULL DEFAULT 1,
+      created_at TEXT NOT NULL DEFAULT (datetime('now')),
+      updated_at TEXT NOT NULL DEFAULT (datetime('now'))
+    );
+
+    CREATE TABLE IF NOT EXISTS orders (
+      id TEXT PRIMARY KEY,
+      nostr_pubkey TEXT,
+      email TEXT,
+      btcpay_invoice_id TEXT,
+      status TEXT NOT NULL DEFAULT 'pending',
+      shipping_address_encrypted TEXT,
+      items TEXT NOT NULL,
+      total_sats INTEGER NOT NULL,
+      note TEXT,
+      created_at TEXT NOT NULL DEFAULT (datetime('now')),
+      updated_at TEXT NOT NULL DEFAULT (datetime('now'))
+    );
+
+    CREATE TABLE IF NOT EXISTS order_events (
+      id INTEGER PRIMARY KEY AUTOINCREMENT,
+      order_id TEXT NOT NULL REFERENCES orders(id),
+      status TEXT NOT NULL,
+      note TEXT,
+      created_at TEXT NOT NULL DEFAULT (datetime('now'))
+    );
+
+    CREATE TABLE IF NOT EXISTS admin_sessions (
+      token TEXT PRIMARY KEY,
+      created_at TEXT NOT NULL DEFAULT (datetime('now')),
+      expires_at TEXT NOT NULL
+    );
+
+    CREATE INDEX IF NOT EXISTS idx_orders_status ON orders(status);
+    CREATE INDEX IF NOT EXISTS idx_orders_nostr ON orders(nostr_pubkey);
+    CREATE INDEX IF NOT EXISTS idx_order_events_order ON order_events(order_id);
+    CREATE INDEX IF NOT EXISTS idx_products_slug ON products(slug);
+    CREATE INDEX IF NOT EXISTS idx_products_category ON products(category);
+  `)
+}