git add .
git commit -m "feat(workspace): inventory overview, auth, persistent h2 db, users & roles
- add inventory overview endpoint (aggregated stock per SKU)
- implement inventory movements (production, sale, return, adjustment)
- add session-based login with Spring Security (form login)
- protect /api/** endpoints
- add logout with session invalidation
- introduce user roles (ADMIN, WORKER) and active flag
- seed admin user in dev profile
- switch from H2 in-memory to persistent H2 file database
- enable H2 console for development
- add Next.js workspace UI (inventory table, filters, movements)
- support active/inactive products and users (soft disable)"
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