feat: initial NFC Attendance Hub implementation

- Multi-tenant client management with unique API keys
- Semaphore SMS integration (per-client key + sender name + credit balance)
- DB-based SMS queue with 3-attempt retry and exponential backoff
- Failed SMS dashboard with manual retry button
- Reports page with date/client filter and CSV export
- Admin auth via NextAuth (email/password)
- Docker Compose setup (app + PostgreSQL 16)
- Prisma 5 schema with SmsQueue, SmsLog, Client, User models

Tech: Next.js 14 App Router + TypeScript + Tailwind CSS + Prisma + PostgreSQL

components/ui/table.tsx

@@ -0,0 +1,48 @@
+import * as React from "react"
+import { cn } from "@/lib/utils"
+
+const Table = React.forwardRef<HTMLTableElement, React.HTMLAttributes<HTMLTableElement>>(
+  ({ className, ...props }, ref) => (
+    <div className="relative w-full overflow-auto">
+      <table ref={ref} className={cn("w-full caption-bottom text-sm", className)} {...props} />
+    </div>
+  )
+)
+Table.displayName = "Table"
+
+const TableHeader = React.forwardRef<HTMLTableSectionElement, React.HTMLAttributes<HTMLTableSectionElement>>(
+  ({ className, ...props }, ref) => (
+    <thead ref={ref} className={cn("[&_tr]:border-b", className)} {...props} />
+  )
+)
+TableHeader.displayName = "TableHeader"
+
+const TableBody = React.forwardRef<HTMLTableSectionElement, React.HTMLAttributes<HTMLTableSectionElement>>(
+  ({ className, ...props }, ref) => (
+    <tbody ref={ref} className={cn("[&_tr:last-child]:border-0", className)} {...props} />
+  )
+)
+TableBody.displayName = "TableBody"
+
+const TableRow = React.forwardRef<HTMLTableRowElement, React.HTMLAttributes<HTMLTableRowElement>>(
+  ({ className, ...props }, ref) => (
+    <tr ref={ref} className={cn("border-b transition-colors hover:bg-muted/50 data-[state=selected]:bg-muted", className)} {...props} />
+  )
+)
+TableRow.displayName = "TableRow"
+
+const TableHead = React.forwardRef<HTMLTableCellElement, React.ThHTMLAttributes<HTMLTableCellElement>>(
+  ({ className, ...props }, ref) => (
+    <th ref={ref} className={cn("h-12 px-4 text-left align-middle font-medium text-muted-foreground [&:has([role=checkbox])]:pr-0", className)} {...props} />
+  )
+)
+TableHead.displayName = "TableHead"
+
+const TableCell = React.forwardRef<HTMLTableCellElement, React.TdHTMLAttributes<HTMLTableCellElement>>(
+  ({ className, ...props }, ref) => (
+    <td ref={ref} className={cn("p-4 align-middle [&:has([role=checkbox])]:pr-0", className)} {...props} />
+  )
+)
+TableCell.displayName = "TableCell"
+
+export { Table, TableHeader, TableBody, TableRow, TableHead, TableCell }