Introduce PocketBase workflow support, migration tooling, server APIs and documentation. Adds a set of PocketBase collection JSONs (order_items, order_items_v2, collection_pool, delivery_notes, delivery_note_items, repairs) and a large import manifest for workflow collections; includes docs describing MCP/API layer, migration audit, order-item schema and rollout plans. Adds server-side agent/MCP endpoints and services (api/mcp, api/v1/orders, collection-pool, order-items status, health) plus helper modules (pocketbase-admin, orders-service, order-item-status, agent-auth) and a migration script to create order_items_v2/collection_pool. UI: new pages for collection-pool, delivery-notes, repairs and several updates to orders/quotes pages, sidebar, tooltip and pb helpers/types. Also updates package.json (migration script and related changes) and global styles. Required env vars and suggested migration command are documented (e.g. NEXT_PUBLIC_POCKETBASE_URL, PB_ADMIN_EMAIL, PB_ADMIN_PASSWORD, ORDER_ITEMS_COLLECTION; run npm run pb:migrate:orders-v2).
