refactor: add proper types for all database insert operations

- Add missing Select and Insert types for Auth.js tables (Account, Session, VerificationToken)
- Update all insert operations to use typed New* variables:
  - NewUser for user signup
  - NewItem for adding wishlist items
  - NewSavedWishlist for saving wishlists
- Improves type safety and catches insert errors at compile time

Dockerfile

@@ -32,7 +32,7 @@ COPY --from=deps /app/node_modules ./node_modules
 # Copy Drizzle files for migrations
 COPY --from=builder /app/drizzle ./drizzle
 COPY --from=builder /app/drizzle.config.ts ./
-COPY --from=builder /app/src/lib/server/schema.ts ./src/lib/server/schema.ts
+COPY --from=builder /app/src/lib/db ./src/lib/db
 
 # Expose the port
 EXPOSE 3000