feat: add warehouse and bin management API with mock data implementation

- Implemented warehouses API with methods for listing, creating, and managing bins.
- Added wastage API to handle stock write-offs and integrate with stock adjustments.
- Created auth token management for storing and retrieving access tokens.
- Developed error mapping for consistent user-facing error messages.
- Introduced client-side validations for GRN, master data, and procurement processes.
- Defined common types for pagination, problem details, and various master data entities.
- Established procurement and stock management types to support frontend functionality.

Frontend/erp-system/components/stock/status-badges.tsx

@@ -0,0 +1,35 @@
+import { Badge } from "@/components/ui/badge"
+import { AdjustmentStatus, CountStatus, TransferStatus } from "@/types/stock"
+
+// Same fixed-size, red/green/yellow convention as components/receiving/status-badges.tsx.
+const badgeSize = "h-6 w-28 justify-center px-2.5 py-1 text-sm"
+
+const warning = "bg-warning/10 text-warning border-transparent"
+const success = "bg-success/10 text-success border-transparent"
+const destructive = "bg-destructive/10 text-destructive border-transparent"
+
+export function TransferStatusBadge({ status }: { status: TransferStatus }) {
+  const tone = status === "Received" ? success : status === "Closed" ? destructive : warning
+  return (
+    <Badge variant="outline" className={`${badgeSize} ${tone}`}>
+      {status}
+    </Badge>
+  )
+}
+
+export function CountStatusBadge({ status }: { status: CountStatus }) {
+  const tone = status === "Posted" ? success : warning
+  return (
+    <Badge variant="outline" className={`${badgeSize} ${tone}`}>
+      {status}
+    </Badge>
+  )
+}
+
+export function AdjustmentStatusBadge({ status }: { status: AdjustmentStatus }) {
+  return (
+    <Badge variant="outline" className={`${badgeSize} ${success}`}>
+      {status}
+    </Badge>
+  )
+}