Build inventory frontend and stock management features

- Full inventory UI: product list with search/filter, product detail with
  tabs (details, units, suppliers, stock receipts, price history)
- Product filters: category, type (serialized/rental/repair), low stock,
  active/inactive — all server-side with URL-synced state
- Product-supplier junction: link products to multiple suppliers with
  preferred flag, joined supplier details in UI
- Stock receipts: record incoming stock with supplier, qty, cost per unit,
  invoice number; auto-increments qty_on_hand for non-serialized products
- Price history tab on product detail page
- categories/all endpoint to avoid pagination limit on dropdown fetches
- categoryId filter on product list endpoint
- Repair parts and additional inventory items in music store seed data
- isDualUseRepair corrected: instruments set to false, strings/parts true
- Product-supplier links and stock receipts in seed data
- Price history seed data simulating cost increases over past year
- 37 API tests covering categories, suppliers, products, units,
  product-suppliers, and stock receipts
- alert-dialog and checkbox UI components
- sync-and-deploy.sh script for rsync + remote deploy

packages/shared/src/schemas/index.ts

@@ -55,6 +55,9 @@ export {
   ProductSearchSchema,
   InventoryUnitCreateSchema,
   InventoryUnitUpdateSchema,
+  ProductSupplierCreateSchema,
+  ProductSupplierUpdateSchema,
+  StockReceiptCreateSchema,
 } from './inventory.schema.js'
 export type {
   CategoryCreateInput,
@@ -65,6 +68,9 @@ export type {
   ProductUpdateInput,
   InventoryUnitCreateInput,
   InventoryUnitUpdateInput,
+  ProductSupplierCreateInput,
+  ProductSupplierUpdateInput,
+  StockReceiptCreateInput,
 } from './inventory.schema.js'
 
 export {

packages/shared/src/schemas/inventory.schema.ts

@@ -90,3 +90,24 @@ export type InventoryUnitCreateInput = z.infer<typeof InventoryUnitCreateSchema>
 
 export const InventoryUnitUpdateSchema = InventoryUnitCreateSchema.omit({ productId: true }).partial()
 export type InventoryUnitUpdateInput = z.infer<typeof InventoryUnitUpdateSchema>
+
+export const ProductSupplierCreateSchema = z.object({
+  supplierId: z.string().uuid(),
+  supplierSku: opt(z.string().max(100)),
+  isPreferred: z.boolean().default(false),
+})
+export type ProductSupplierCreateInput = z.infer<typeof ProductSupplierCreateSchema>
+
+export const ProductSupplierUpdateSchema = ProductSupplierCreateSchema.omit({ supplierId: true }).partial()
+export type ProductSupplierUpdateInput = z.infer<typeof ProductSupplierUpdateSchema>
+
+export const StockReceiptCreateSchema = z.object({
+  supplierId: opt(z.string().uuid()),
+  inventoryUnitId: opt(z.string().uuid()),
+  qty: z.number().int().min(1).default(1),
+  costPerUnit: z.number().min(0),
+  receivedDate: z.string().date(),
+  invoiceNumber: opt(z.string().max(100)),
+  notes: opt(z.string()),
+})
+export type StockReceiptCreateInput = z.infer<typeof StockReceiptCreateSchema>