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Reworks the demo seed and SPA to match the reference customer's work-order management process (EBC-PP-001 from raw/ docs). Demo seed (DemoSeedRunner): - 7 printing-specific items: paper stock, 4-color ink, CTP plates, lamination film, business cards, brochures, posters - 4 partners: 2 customers (Wucai Advertising, Globe Marketing), 2 suppliers (Huazhong Paper, InkPro Industries) - 2 warehouses with opening stock for all items - Pre-seeded WO-PRINT-0001 with full BOM (3 inputs: paper + ink + CTP plates from WH-RAW) and 3-step routing (CTP plate-making @ CTP-ROOM-01 -> offset printing @ PRESS-A -> post-press finishing @ BIND-01) matching EBC-PP-001 steps C-010/C-040 - 2 DRAFT sales orders: SO-2026-0001 (100x business cards + 500x brochures, $1950), SO-2026-0002 (200x posters, $760) - 1 DRAFT purchase order: PO-2026-0001 (10000x paper + 50kg ink, $2550) from Huazhong Paper SPA additions: - New CreateSalesOrderPage with customer dropdown, item selector, dynamic line add/remove, quantity + price inputs. Navigates to the detail page on creation. - "+ New Order" button on the SalesOrdersPage header - Dashboard "Try the demo" section rewritten to walk the EBC-PP-001 flow: create SO -> confirm (auto-spawns WOs) -> walk WO routing -> complete (material issue + production receipt) -> ship SO (stock debit + AR settle) - salesOrders.create() added to the typed API client The key demo beat: confirming SO-2026-0001 auto-spawns WO-FROM-SO-2026-0001-L1 and -L2 via SalesOrderConfirmedSubscriber (EBC-PP-001 step B-010). The pre-seeded WO-PRINT-0001 shows the full BOM + routing story separately. Together they demonstrate that the framework expresses the customer's production workflow through configuration, not code. Smoke verified on fresh Postgres: all 7 items seeded, WO with 3 BOM + 3 ops created, SO confirm spawns 2 WOs with source traceability, SPA /sales-orders/new renders and creates orders.
