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/admin/src/components/ui/checkbox.tsx

@@ -0,0 +1,30 @@
+import * as React from "react"
+import { Checkbox as CheckboxPrimitive } from "radix-ui"
+import { CheckIcon } from "lucide-react"
+
+import { cn } from "@/lib/utils"
+
+function Checkbox({
+  className,
+  ...props
+}: React.ComponentProps<typeof CheckboxPrimitive.Root>) {
+  return (
+    <CheckboxPrimitive.Root
+      data-slot="checkbox"
+      className={cn(
+        "peer size-4 shrink-0 rounded-[4px] border border-input shadow-xs transition-shadow outline-none focus-visible:border-ring focus-visible:ring-[3px] focus-visible:ring-ring/50 disabled:cursor-not-allowed disabled:opacity-50 data-[state=checked]:bg-primary data-[state=checked]:text-primary-foreground data-[state=checked]:border-primary dark:bg-input/30 dark:data-[state=checked]:bg-primary",
+        className
+      )}
+      {...props}
+    >
+      <CheckboxPrimitive.Indicator
+        data-slot="checkbox-indicator"
+        className="flex items-center justify-center text-current transition-none"
+      >
+        <CheckIcon className="size-3.5" />
+      </CheckboxPrimitive.Indicator>
+    </CheckboxPrimitive.Root>
+  )
+}
+
+export { Checkbox }