Drop companyId from company-scoped store wrappers and routes, add GET /entity/next-number plus optional number on entity create/update, and document dashdbschema API.md lookup in sibling-repos.
- Add posterminal to STORE_NAMESPACES for timing wrappers - Create db/posterminal.js wrapper for store methods - Create routes/posterminal.js with all endpoints: - GET /api/posterminal - list terminals - PUT /api/posterminal - create terminal (name only, pin randomized) - DELETE /api/posterminal/:id - delete terminal - PUT/DELETE /api/posterminal/:id/category/:categoryId - toggle category - PUT/DELETE /api/posterminal/:id/categories - toggle all categories Closes #<issue-number>
