Enhance database management with cleanup and reset scripts

- Added a new database cleanup script to remove all data while preserving the schema, facilitating a clean state before seeding.
- Updated package.json to include new commands for database cleaning and resetting.
- Modified schema definitions to use an array format for index and constraint definitions, improving clarity and consistency.
- Updated product seeding logic to utilize role-based assignments directly from mock data, enhancing flexibility in product-role relationships.

CLAUDE.md

@@ -75,6 +75,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 - **Styling:** Tailwind CSS v4
 - **Database:** PostgreSQL 16+
 - **ORM:** Drizzle ORM (TypeScript-first, performant)
+  - **Important:** Use `(table) => [...]` for indexes/constraints, NOT `(table) => ({...})`
 - **Queue System:** BullMQ (MIT License) - Async job processing
 - **In-Memory Store:** Redis 7 - Queue storage, sessions, caching
 - **Auth:** Cidaas (OIDC/OAuth2) - external platform