251127:1700 Frontend Start Build

2025-11-27 17:08:49 +07:00
parent 6abb746e08
commit 4f3aa87a93
1795 changed files with 893474 additions and 10 deletions
--- a/frontend/components/custom/file-upload-zone.tsx
+++ b/frontend/components/custom/file-upload-zone.tsx
@@ -0,0 +1,203 @@
+// File: components/custom/file-upload-zone.tsx
+
+"use client";
+
+import React, { useCallback, useState } from "react";
+import { UploadCloud, File, X, AlertTriangle, CheckCircle } from "lucide-react";
+import { cn } from "@/lib/utils";
+import { Button } from "@/components/ui/button";
+import { Badge } from "@/components/ui/badge";
+import { ScrollArea } from "@/components/ui/scroll-area";
+
+export interface FileWithMeta extends File {
+  preview?: string;
+  validationError?: string;
+}
+
+interface FileUploadZoneProps {
+  /** Callback เมื่อไฟล์มีการเปลี่ยนแปลง */
+  onFilesChanged: (files: FileWithMeta[]) => void;
+  /** ประเภทไฟล์ที่ยอมรับ (เช่น .pdf, .dwg) */
+  accept?: string[];
+  /** ขนาดไฟล์สูงสุด (Bytes) Default: 50MB */
+  maxSize?: number;
+  /** อนุญาตให้อัปโหลดหลายไฟล์หรือไม่ */
+  multiple?: boolean;
+  /** ไฟล์ที่มีอยู่เดิม (ถ้ามี) */
+  initialFiles?: FileWithMeta[];
+  className?: string;
+}
+
+/**
+ * Helper: แปลง Bytes เป็นหน่วยที่อ่านง่าย
+ */
+const formatBytes = (bytes: number, decimals = 2) => {
+  if (!+bytes) return "0 Bytes";
+  const k = 1024;
+  const dm = decimals < 0 ? 0 : decimals;
+  const sizes = ["Bytes", "KB", "MB", "GB", "TB"];
+  const i = Math.floor(Math.log(bytes) / Math.log(k));
+  return `${parseFloat((bytes / Math.pow(k, i)).toFixed(dm))} ${sizes[i]}`;
+};
+
+/**
+ * FileUploadZone Component
+ * รองรับ Drag & Drop, Validation และแสดงรายการไฟล์
+ */
+export function FileUploadZone({
+  onFilesChanged,
+  accept = [".pdf", ".dwg", ".docx", ".xlsx", ".zip"],
+  maxSize = 50 * 1024 * 1024, // 50MB Default
+  multiple = true,
+  initialFiles = [],
+  className,
+}: FileUploadZoneProps) {
+  const [files, setFiles] = useState<FileWithMeta[]>(initialFiles);
+  const [isDragging, setIsDragging] = useState(false);
+
+  // ตรวจสอบไฟล์
+  const validateFile = (file: File): string | undefined => {
+    // 1. Check Size
+    if (file.size > maxSize) {
+      return `ขนาดไฟล์เกินกำหนด (${formatBytes(maxSize)})`;
+    }
+    // 2. Check Type (Extension based validation for simplicity on client)
+    const fileExtension = "." + file.name.split(".").pop()?.toLowerCase();
+    if (accept.length > 0 && !accept.includes(fileExtension)) {
+      return `ประเภทไฟล์ไม่รองรับ (อนุญาต: ${accept.join(", ")})`;
+    }
+    return undefined;
+  };
+
+  const handleFileSelect = useCallback(
+    (newFiles: File[]) => {
+      const processedFiles: FileWithMeta[] = newFiles.map((file) => {
+        const error = validateFile(file);
+        // สร้าง Object ใหม่เพื่อไม่ให้กระทบ File object เดิม
+        const fileWithMeta = new File([file], file.name, { type: file.type }) as FileWithMeta;
+        fileWithMeta.validationError = error;
+        return fileWithMeta;
+      });
+
+      setFiles((prev) => {
+        const updated = multiple ? [...prev, ...processedFiles] : processedFiles;
+        onFilesChanged(updated);
+        return updated;
+      });
+    },
+    [maxSize, accept, multiple, onFilesChanged]
+  );
+
+  // Drag Events
+  const onDragOver = (e: React.DragEvent) => {
+    e.preventDefault();
+    setIsDragging(true);
+  };
+  const onDragLeave = (e: React.DragEvent) => {
+    e.preventDefault();
+    setIsDragging(false);
+  };
+  const onDrop = (e: React.DragEvent) => {
+    e.preventDefault();
+    setIsDragging(false);
+    if (e.dataTransfer.files && e.dataTransfer.files.length > 0) {
+      handleFileSelect(Array.from(e.dataTransfer.files));
+    }
+  };
+
+  const removeFile = (indexToRemove: number) => {
+    setFiles((prev) => {
+      const updated = prev.filter((_, index) => index !== indexToRemove);
+      onFilesChanged(updated);
+      return updated;
+    });
+  };
+
+  return (
+    <div className={cn("w-full space-y-4", className)}>
+      {/* Drop Zone */}
+      <div
+        className={cn(
+          "border-2 border-dashed rounded-lg p-8 text-center transition-colors cursor-pointer flex flex-col items-center justify-center gap-2",
+          isDragging
+            ? "border-primary bg-primary/10"
+            : "border-muted-foreground/25 hover:border-primary/50",
+          "h-48"
+        )}
+        onDragOver={onDragOver}
+        onDragLeave={onDragLeave}
+        onDrop={onDrop}
+        onClick={() => document.getElementById("file-input")?.click()}
+      >
+        <input
+          id="file-input"
+          type="file"
+          className="hidden"
+          multiple={multiple}
+          accept={accept.join(",")}
+          onChange={(e) => {
+            if (e.target.files) handleFileSelect(Array.from(e.target.files));
+          }}
+        />
+        <div className="p-3 bg-muted rounded-full">
+          <UploadCloud className="w-8 h-8 text-muted-foreground" />
+        </div>
+        <div className="space-y-1">
+          <p className="text-sm font-medium">
+            คลิกเพื่อเลือกไฟล์ หรือ ลากไฟล์มาวางที่นี่
+          </p>
+          <p className="text-xs text-muted-foreground">
+            รองรับ: {accept.join(", ")} (สูงสุด {formatBytes(maxSize)})
+          </p>
+        </div>
+      </div>
+
+      {/* File List */}
+      {files.length > 0 && (
+        <ScrollArea className="h-[200px] w-full rounded-md border p-4">
+          <div className="space-y-3">
+            {files.map((file, index) => (
+              <div
+                key={`${file.name}-${index}`}
+                className="flex items-center justify-between p-3 bg-card rounded-md border shadow-sm group"
+              >
+                <div className="flex items-center gap-3 overflow-hidden">
+                  <div className="p-2 bg-primary/10 rounded-md shrink-0">
+                    <File className="w-5 h-5 text-primary" />
+                  </div>
+                  <div className="min-w-0">
+                    <p className="text-sm font-medium truncate max-w-[200px] sm:max-w-md">
+                      {file.name}
+                    </p>
+                    <div className="flex items-center gap-2">
+                        <span className="text-xs text-muted-foreground">
+                        {formatBytes(file.size)}
+                        </span>
+                        {file.validationError ? (
+                             <Badge variant="destructive" className="text-[10px] px-1 h-5 flex gap-1">
+                                <AlertTriangle className="w-3 h-3" /> {file.validationError}
+                             </Badge>
+                        ) : (
+                            <Badge variant="outline" className="text-[10px] px-1 h-5 text-green-600 bg-green-50 border-green-200 flex gap-1">
+                                <CheckCircle className="w-3 h-3" /> Ready
+                            </Badge>
+                        )}
+                    </div>
+                  </div>
+                </div>
+                <Button
+                  variant="ghost"
+                  size="icon"
+                  className="shrink-0 text-muted-foreground hover:text-destructive"
+                  onClick={() => removeFile(index)}
+                >
+                  <X className="w-4 h-4" />
+                </Button>
+              </div>
+            ))}
+          </div>
+        </ScrollArea>
+      )}
+    </div>
+  );
+}
--- a/frontend/components/custom/responsive-data-table.tsx
+++ b/frontend/components/custom/responsive-data-table.tsx
@@ -0,0 +1,125 @@
+// File: components/custom/responsive-data-table.tsx
+
+import React from "react";
+import {
+  Table,
+  TableBody,
+  TableCell,
+  TableHead,
+  TableHeader,
+  TableRow,
+} from "@/components/ui/table";
+import { Card, CardContent, CardHeader } from "@/components/ui/card";
+import { cn } from "@/lib/utils";
+
+/**
+ * Interface สำหรับ Column Definition
+ */
+export interface ColumnDef<T> {
+  key: string;
+  header: string;
+  /** ฟังก์ชันสำหรับ render cell content (optional) */
+  cell?: (item: T) => React.ReactNode;
+  /** คลาส CSS เพิ่มเติมสำหรับ cell */
+  className?: string;
+}
+
+/**
+ * Props สำหรับ ResponsiveDataTable
+ */
+interface ResponsiveDataTableProps<T> {
+  /** ข้อมูลที่จะแสดงในตาราง */
+  data: T[];
+  /** นิยามของคอลัมน์ */
+  columns: ColumnDef<T>[];
+  /** Key ที่เป็น Unique ID ของข้อมูล (เช่น 'id', 'user_id') */
+  keyExtractor: (item: T) => string | number;
+  /** ฟังก์ชันสำหรับ Render Card View บน Mobile (ถ้าไม่ใส่จะ Render แบบ Default Key-Value) */
+  renderMobileCard?: (item: T) => React.ReactNode;
+  /** ข้อความเมื่อไม่มีข้อมูล */
+  emptyMessage?: string;
+  /** คลาส CSS เพิ่มเติมสำหรับ Container */
+  className?: string;
+}
+
+/**
+ * ResponsiveDataTable Component
+ * * แสดงผลเป็น Table ปกติในหน้าจอขนาด md ขึ้นไป
+ * และแสดงผลเป็น Card List ในหน้าจอขนาดเล็กกว่า md
+ */
+export function ResponsiveDataTable<T>({
+  data,
+  columns,
+  keyExtractor,
+  renderMobileCard,
+  emptyMessage = "ไม่พบข้อมูล",
+  className,
+}: ResponsiveDataTableProps<T>) {
+
+  if (!data || data.length === 0) {
+    return (
+      <div className="p-8 text-center text-muted-foreground border rounded-md bg-background">
+        {emptyMessage}
+      </div>
+    );
+  }
+
+  return (
+    <div className={cn("w-full space-y-4", className)}>
+      {/* --- Desktop View (Table) --- */}
+      <div className="hidden md:block rounded-md border bg-background">
+        <Table>
+          <TableHeader>
+            <TableRow>
+              {columns.map((col) => (
+                <TableHead key={col.key} className={col.className}>
+                  {col.header}
+                </TableHead>
+              ))}
+            </TableRow>
+          </TableHeader>
+          <TableBody>
+            {data.map((item) => (
+              <TableRow key={keyExtractor(item)}>
+                {columns.map((col) => (
+                  <TableCell key={`${keyExtractor(item)}-${col.key}`} className={col.className}>
+                    {col.cell ? col.cell(item) : (item as any)[col.key]}
+                  </TableCell>
+                ))}
+              </TableRow>
+            ))}
+          </TableBody>
+        </Table>
+      </div>
+
+      {/* --- Mobile View (Cards) --- */}
+      <div className="md:hidden space-y-4">
+        {data.map((item) => (
+          <div key={keyExtractor(item)}>
+            {renderMobileCard ? (
+              // Custom Mobile Render
+              renderMobileCard(item)
+            ) : (
+              // Default Mobile Render (Key-Value Pairs)
+              <Card>
+                <CardHeader className="pb-2 font-semibold border-b mb-2">
+                    # {keyExtractor(item)}
+                </CardHeader>
+                <CardContent className="space-y-2 text-sm">
+                  {columns.map((col) => (
+                    <div key={col.key} className="flex justify-between items-start border-b pb-1 last:border-0">
+                      <span className="font-medium text-muted-foreground w-1/3">{col.header}:</span>
+                      <span className="text-right w-2/3 break-words">
+                         {col.cell ? col.cell(item) : (item as any)[col.key]}
+                      </span>
+                    </div>
+                  ))}
+                </CardContent>
+              </Card>
+            )}
+          </div>
+        ))}
+      </div>
+    </div>
+  );
+}
--- a/frontend/components/custom/workflow-visualizer.tsx
+++ b/frontend/components/custom/workflow-visualizer.tsx
@@ -0,0 +1,111 @@
+// File: components/custom/workflow-visualizer.tsx
+
+import React from "react";
+import { Check, Clock, XCircle, AlertCircle } from "lucide-react";
+import { cn } from "@/lib/utils";
+
+/**
+ * สถานะของขั้นตอนใน Workflow
+ */
+export type StepStatus = "completed" | "current" | "pending" | "rejected" | "skipped";
+
+export interface WorkflowStep {
+  id: string | number;
+  label: string;
+  subLabel?: string; // เช่น ชื่อองค์กร หรือ ชื่อผู้อนุมัติ
+  status: StepStatus;
+  date?: string; // วันที่ดำเนินการ (ถ้ามี)
+}
+
+interface WorkflowVisualizerProps {
+  steps: WorkflowStep[];
+  className?: string;
+}
+
+/**
+ * WorkflowVisualizer Component
+ * แสดงเส้นเวลา (Timeline) ของกระบวนการอนุมัติแบบแนวนอน
+ */
+export function WorkflowVisualizer({ steps, className }: WorkflowVisualizerProps) {
+  return (
+    <div className={cn("w-full overflow-x-auto py-4 px-2", className)}>
+      <div className="flex items-start min-w-max">
+        {steps.map((step, index) => {
+          const isLast = index === steps.length - 1;
+          
+          // กำหนดสีตามสถานะ
+          let statusColor = "bg-muted text-muted-foreground border-muted"; // pending
+          let icon = <span className="text-xs">{index + 1}</span>;
+          let lineColor = "bg-muted";
+
+          switch (step.status) {
+            case "completed":
+              statusColor = "bg-green-600 text-white border-green-600";
+              icon = <Check className="w-4 h-4" />;
+              lineColor = "bg-green-600";
+              break;
+            case "current":
+              statusColor = "bg-blue-600 text-white border-blue-600 ring-4 ring-blue-100";
+              icon = <Clock className="w-4 h-4 animate-pulse" />;
+              lineColor = "bg-muted"; // เส้นต่อไปยังเป็นสีเทา
+              break;
+            case "rejected":
+              statusColor = "bg-destructive text-destructive-foreground border-destructive";
+              icon = <XCircle className="w-4 h-4" />;
+              lineColor = "bg-destructive";
+              break;
+            case "skipped":
+                statusColor = "bg-orange-400 text-white border-orange-400";
+                icon = <AlertCircle className="w-4 h-4" />;
+                lineColor = "bg-orange-400";
+                break;
+            case "pending":
+            default:
+              // ใช้ default
+              break;
+          }
+
+          return (
+            <div key={step.id} className="relative flex flex-col items-center flex-1 group">
+              {/* Connector Line (Left & Right) */}
+              <div className="flex items-center w-full absolute top-4 left-0 -z-10">
+                 {/* Left Half Line (Previous step connection) */}
+                 <div className={cn("h-1 w-1/2", index === 0 ? "bg-transparent" : (steps[index-1].status === 'completed' || steps[index-1].status === 'skipped' ? lineColor : (steps[index].status === 'completed' ? lineColor : 'bg-muted')))} />
+                 
+                 {/* Right Half Line (Next step connection) */}
+                 <div className={cn("h-1 w-1/2", isLast ? "bg-transparent" : (step.status === 'completed' || step.status === 'skipped' ? lineColor : 'bg-muted'))} />
+              </div>
+
+              {/* Step Circle */}
+              <div
+                className={cn(
+                  "w-8 h-8 rounded-full flex items-center justify-center border-2 z-10 transition-all duration-300",
+                  statusColor
+                )}
+              >
+                {icon}
+              </div>
+
+              {/* Step Label */}
+              <div className="mt-3 text-center space-y-1 max-w-[120px]">
+                <p className={cn("text-sm font-semibold", step.status === 'current' ? 'text-blue-700' : 'text-foreground')}>
+                    {step.label}
+                </p>
+                {step.subLabel && (
+                  <p className="text-xs text-muted-foreground truncate" title={step.subLabel}>
+                    {step.subLabel}
+                  </p>
+                )}
+                {step.date && (
+                  <p className="text-[10px] text-muted-foreground bg-secondary px-1.5 py-0.5 rounded-full inline-block">
+                    {step.date}
+                  </p>
+                )}
+              </div>
+            </div>
+          );
+        })}
+      </div>
+    </div>
+  );
+}
--- a/frontend/components/dashboard/recent-activity.tsx
+++ b/frontend/components/dashboard/recent-activity.tsx
@@ -0,0 +1,108 @@
+// File: components/dashboard/recent-activity.tsx
+import {
+  Avatar,
+  AvatarFallback,
+  AvatarImage,
+} from "@/components/ui/avatar";
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+
+// Type จำลองตามโครงสร้าง v_audit_log_details
+type AuditLogItem = {
+  audit_id: number;
+  username: string;
+  email: string;
+  action: string;
+  entity_type: string;
+  entity_id: string;
+  created_at: string;
+  avatar?: string;
+};
+
+// Mock Data
+const recentActivities: AuditLogItem[] = [
+  {
+    audit_id: 1,
+    username: "Editor01",
+    email: "editor01@example.com",
+    action: "rfa.create",
+    entity_type: "RFA",
+    entity_id: "LCBP3-RFA-STR-001",
+    created_at: "2025-11-26T09:00:00Z",
+  },
+  {
+    audit_id: 2,
+    username: "Superadmin",
+    email: "admin@example.com",
+    action: "user.create",
+    entity_type: "User",
+    entity_id: "new_user_01",
+    created_at: "2025-11-26T10:30:00Z",
+  },
+  {
+    audit_id: 3,
+    username: "Viewer01",
+    email: "viewer01@example.com",
+    action: "document.view",
+    entity_type: "Correspondence",
+    entity_id: "LCBP3-LET-GEN-005",
+    created_at: "2025-11-26T11:15:00Z",
+  },
+  {
+    audit_id: 4,
+    username: "Editor01",
+    email: "editor01@example.com",
+    action: "shop_drawing.upload",
+    entity_type: "Shop Drawing",
+    entity_id: "SHP-STR-COL-01",
+    created_at: "2025-11-26T13:45:00Z",
+  },
+];
+
+export function RecentActivity() {
+  return (
+    <Card className="col-span-3 lg:col-span-1">
+      <CardHeader>
+        <CardTitle>Recent Activity</CardTitle>
+      </CardHeader>
+      <CardContent>
+        <div className="space-y-8">
+          {recentActivities.map((item) => (
+            <div key={item.audit_id} className="flex items-center">
+              <Avatar className="h-9 w-9">
+                <AvatarImage src={item.avatar} alt={item.username} />
+                <AvatarFallback>{item.username[0] + item.username[1]}</AvatarFallback>
+              </Avatar>
+              <div className="ml-4 space-y-1">
+                <p className="text-sm font-medium leading-none">
+                  {item.username}
+                </p>
+                <p className="text-sm text-muted-foreground">
+                  {formatActionMessage(item)}
+                </p>
+              </div>
+              <div className="ml-auto text-xs text-muted-foreground">
+                {new Date(item.created_at).toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })}
+              </div>
+            </div>
+          ))}
+        </div>
+      </CardContent>
+    </Card>
+  );
+}
+
+function formatActionMessage(item: AuditLogItem) {
+  // Simple formatter for demo. In real app, use translation or mapping.
+  switch (item.action) {
+    case "rfa.create":
+      return `Created RFA ${item.entity_id}`;
+    case "user.create":
+      return `Created new user ${item.entity_id}`;
+    case "document.view":
+      return `Viewed document ${item.entity_id}`;
+    case "shop_drawing.upload":
+      return `Uploaded drawing ${item.entity_id}`;
+    default:
+      return `Performed ${item.action}`;
+  }
+}
--- a/frontend/components/forms/file-upload.tsx
+++ b/frontend/components/forms/file-upload.tsx
@@ -0,0 +1,124 @@
+// File: components/forms/file-upload.tsx
+"use client";
+
+import { useRef, useState } from "react";
+import { UploadCloud, X, File, FileText, Image as ImageIcon } from "lucide-react";
+import { Button } from "@/components/ui/button";
+import { cn } from "@/lib/utils";
+
+interface FileUploadProps {
+  onFilesChange: (files: File[]) => void;
+  maxFiles?: number;
+  maxSize?: number; // MB
+  accept?: string; // e.g. ".pdf,.jpg,.png"
+}
+
+export function FileUpload({ onFilesChange, maxFiles = 5, maxSize = 50, accept }: FileUploadProps) {
+  const [dragActive, setDragActive] = useState(false);
+  const [files, setFiles] = useState<File[]>([]);
+  const inputRef = useRef<HTMLInputElement>(null);
+
+  const handleDrag = (e: React.DragEvent) => {
+    e.preventDefault();
+    e.stopPropagation();
+    if (e.type === "dragenter" || e.type === "dragover") {
+      setDragActive(true);
+    } else if (e.type === "dragleave") {
+      setDragActive(false);
+    }
+  };
+
+  const handleDrop = (e: React.DragEvent) => {
+    e.preventDefault();
+    e.stopPropagation();
+    setDragActive(false);
+    if (e.dataTransfer.files && e.dataTransfer.files[0]) {
+      handleFiles(Array.from(e.dataTransfer.files));
+    }
+  };
+
+  const handleChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    e.preventDefault();
+    if (e.target.files && e.target.files[0]) {
+      handleFiles(Array.from(e.target.files));
+    }
+  };
+
+  const handleFiles = (newFiles: File[]) => {
+    // Validate size & type here if needed
+    const validFiles = newFiles.slice(0, maxFiles - files.length); 
+    const updatedFiles = [...files, ...validFiles];
+    setFiles(updatedFiles);
+    onFilesChange(updatedFiles);
+  };
+
+  const removeFile = (idx: number) => {
+    const updatedFiles = files.filter((_, i) => i !== idx);
+    setFiles(updatedFiles);
+    onFilesChange(updatedFiles);
+  };
+
+  const getFileIcon = (type: string) => {
+    if (type.includes("image")) return <ImageIcon className="h-5 w-5 text-blue-500" />;
+    if (type.includes("pdf")) return <FileText className="h-5 w-5 text-red-500" />;
+    return <File className="h-5 w-5 text-gray-500" />;
+  };
+
+  return (
+    <div className="space-y-4">
+      <div
+        className={cn(
+          "relative flex flex-col items-center justify-center w-full h-32 rounded-lg border-2 border-dashed transition-colors",
+          dragActive ? "border-primary bg-primary/5" : "border-muted-foreground/25 hover:bg-muted/5"
+        )}
+        onDragEnter={handleDrag}
+        onDragLeave={handleDrag}
+        onDragOver={handleDrag}
+        onDrop={handleDrop}
+      >
+        <input
+          ref={inputRef}
+          className="hidden"
+          type="file"
+          multiple
+          accept={accept}
+          onChange={handleChange}
+        />
+        
+        <div className="flex flex-col items-center justify-center pt-5 pb-6 text-center cursor-pointer" onClick={() => inputRef.current?.click()}>
+          <UploadCloud className="w-8 h-8 mb-2 text-muted-foreground" />
+          <p className="mb-1 text-sm text-gray-500 dark:text-gray-400">
+            <span className="font-semibold">Click to upload</span> or drag and drop
+          </p>
+          <p className="text-xs text-gray-500 dark:text-gray-400">
+            PDF, DWG, DOCX (Max {maxSize}MB)
+          </p>
+        </div>
+      </div>
+
+      {/* File List */}
+      {files.length > 0 && (
+        <div className="space-y-2">
+          {files.map((file, idx) => (
+            <div key={idx} className="flex items-center justify-between p-2 bg-muted/40 rounded-md border text-sm">
+              <div className="flex items-center gap-2 overflow-hidden">
+                {getFileIcon(file.type)}
+                <span className="truncate max-w-[200px]">{file.name}</span>
+                <span className="text-xs text-muted-foreground">({(file.size / 1024 / 1024).toFixed(2)} MB)</span>
+              </div>
+              <Button
+                type="button"
+                variant="ghost"
+                size="icon"
+                className="h-6 w-6 text-muted-foreground hover:text-destructive"
+                onClick={() => removeFile(idx)}
+              >
+                <X className="h-4 w-4" />
+              </Button>
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}
--- a/frontend/components/layout/dashboard-shell.tsx
+++ b/frontend/components/layout/dashboard-shell.tsx
@@ -0,0 +1,21 @@
+// File: components/layout/dashboard-shell.tsx
+"use client";
+
+import { useUIStore } from "@/lib/stores/ui-store";
+import { cn } from "@/lib/utils";
+
+export function DashboardShell({ children }: { children: React.ReactNode }) {
+  const { isSidebarOpen } = useUIStore();
+
+  return (
+    <div
+      className={cn(
+        "flex flex-col min-h-screen transition-all duration-300 ease-in-out",
+        // ปรับ Margin ซ้าย ตามสถานะ Sidebar
+        isSidebarOpen ? "md:ml-[240px]" : "md:ml-[70px]"
+      )}
+    >
+      {children}
+    </div>
+  );
+}
--- a/frontend/components/layout/navbar.tsx
+++ b/frontend/components/layout/navbar.tsx
@@ -0,0 +1,45 @@
+// File: components/layout/navbar.tsx
+"use client";
+
+import Link from "next/link";
+import { Menu, Bell } from "lucide-react";
+import { Button } from "@/components/ui/button";
+import { useUIStore } from "@/lib/stores/ui-store";
+import { UserNav } from "./user-nav";
+
+export function Navbar() {
+  const { toggleSidebar } = useUIStore();
+
+  return (
+    <header className="flex h-14 items-center gap-4 border-b bg-background px-4 lg:h-[60px] lg:pr-6 lg:pl-1 sticky top-0 z-30">
+      {/* Toggle Sidebar Button (Mobile Only) */}
+      <Button
+        variant="outline"
+        size="icon"
+        className="shrink-0 md:hidden"
+        onClick={toggleSidebar}
+      >
+        <Menu className="h-5 w-5" />
+        <span className="sr-only">Toggle navigation menu</span>
+      </Button>
+
+      <div className="w-full flex-1">
+        {/* Breadcrumbs หรือ Search Bar จะมาใส่ตรงนี้ */}
+        <h1 className="text-lg font-semibold md:text-xl hidden md:block">
+          Document Management System
+        </h1>
+      </div>
+
+      {/* Right Actions (เหลือชุดเดียวที่ถูกต้อง) */}
+      <div className="flex items-center gap-2">
+        <Button variant="ghost" size="icon">
+          <Bell className="h-5 w-5" />
+          <span className="sr-only">Notifications</span>
+        </Button>
+        
+        {/* User Menu */}
+        <UserNav />
+      </div>
+    </header>
+  );
+}
--- a/frontend/components/layout/sidebar.tsx
+++ b/frontend/components/layout/sidebar.tsx
@@ -0,0 +1,126 @@
+// File: components/layout/sidebar.tsx
+"use client";
+
+import Link from "next/link";
+import { usePathname } from "next/navigation";
+import { cn } from "@/lib/utils";
+import { useUIStore } from "@/lib/stores/ui-store";
+import { sidebarMenuItems, adminMenuItems } from "@/config/menu";
+import { Button } from "@/components/ui/button";
+import { ChevronLeft, Menu, X } from "lucide-react";
+import { useEffect } from "react"; // ✅ Import useEffect
+
+export function Sidebar() {
+  const pathname = usePathname();
+  const { isSidebarOpen, toggleSidebar, closeSidebar } = useUIStore();
+
+  // ✅ เพิ่ม Logic นี้: ปิด Sidebar อัตโนมัติเมื่อหน้าจอเล็กกว่า 768px (Mobile)
+  useEffect(() => {
+    const handleResize = () => {
+      if (window.innerWidth < 768 && isSidebarOpen) {
+        closeSidebar();
+      }
+    };
+
+    // ติดตั้ง Listener
+    window.addEventListener("resize", handleResize);
+
+    // ล้าง Listener เมื่อ Component ถูกทำลาย
+    return () => window.removeEventListener("resize", handleResize);
+  }, [isSidebarOpen, closeSidebar]);
+
+  return (
+    <>
+      {/* Mobile Overlay */}
+      <div
+        className={cn(
+          "fixed inset-0 z-40 bg-background/80 backdrop-blur-sm transition-all duration-100 md:hidden",
+          isSidebarOpen ? "opacity-100" : "opacity-0 pointer-events-none"
+        )}
+        onClick={closeSidebar}
+      />
+
+      {/* Sidebar Container */}
+      <aside
+        className={cn(
+          "fixed top-0 left-0 z-50 h-screen border-r bg-card transition-all duration-300 ease-in-out flex flex-col",
+          
+          // Mobile Width
+          "w-[240px]",
+          isSidebarOpen ? "translate-x-0" : "-translate-x-full",
+
+          // Desktop Styles
+          "md:translate-x-0",
+          isSidebarOpen ? "md:w-[240px]" : "md:w-[70px]"
+        )}
+      >
+        <div className={cn(
+          "flex h-14 items-center border-b px-3 lg:h-[60px]",
+          "justify-between md:justify-center",
+          isSidebarOpen && "md:justify-between"
+        )}>
+          
+          <div className={cn(
+            "flex items-center gap-2 font-bold text-primary truncate transition-all duration-300",
+            !isSidebarOpen && "md:w-0 md:opacity-0 md:hidden"
+          )}>
+            <Link href="/dashboard">LCBP3 DMS</Link>
+          </div>
+
+          {/* Desktop Toggle */}
+          <Button
+            variant="ghost"
+            size="icon"
+            onClick={toggleSidebar}
+            className="hidden md:flex h-8 w-8"
+          >
+            {isSidebarOpen ? <ChevronLeft className="h-4 w-4" /> : <Menu className="h-4 w-4" />}
+          </Button>
+
+          {/* Mobile Close Button */}
+          <Button
+            variant="ghost"
+            size="icon"
+            onClick={closeSidebar} // ปุ่มนี้จะทำงานได้ถูกต้อง
+            className="md:hidden h-8 w-8"
+          >
+            <X className="h-4 w-4" />
+          </Button>
+        </div>
+
+        <div className="flex-1 overflow-y-auto overflow-x-hidden py-4">
+          <nav className="grid gap-1 px-2">
+            {sidebarMenuItems.map((item, index) => {
+              const Icon = item.icon;
+              const isActive = pathname.startsWith(item.href);
+
+              return (
+                <Link
+                  key={index}
+                  href={item.href}
+                  className={cn(
+                    "flex items-center gap-3 rounded-md px-3 py-2 text-sm font-medium transition-colors hover:bg-accent hover:text-accent-foreground",
+                    isActive ? "bg-accent text-accent-foreground" : "text-muted-foreground",
+                    !isSidebarOpen && "md:justify-center md:px-2"
+                  )}
+                  title={!isSidebarOpen ? item.title : undefined}
+                  onClick={() => {
+                    if (window.innerWidth < 768) closeSidebar();
+                  }}
+                >
+                  <Icon className="h-4 w-4 shrink-0" />
+                  <span className={cn(
+                    "truncate transition-all duration-300",
+                    !isSidebarOpen && "md:w-0 md:opacity-0 md:hidden"
+                  )}>
+                    {item.title}
+                  </span>
+                </Link>
+              );
+            })}
+          </nav>
+        </div>
+      </aside>
+    </>
+  );
+}
--- a/frontend/components/layout/user-nav.tsx
+++ b/frontend/components/layout/user-nav.tsx
@@ -0,0 +1,89 @@
+// File: components/layout/user-nav.tsx
+"use client";
+
+import {
+  Avatar,
+  AvatarFallback,
+  AvatarImage,
+} from "@/components/ui/avatar";
+import { Button } from "@/components/ui/button";
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuGroup,
+  DropdownMenuItem,
+  DropdownMenuLabel,
+  DropdownMenuSeparator,
+  DropdownMenuShortcut,
+  DropdownMenuTrigger,
+} from "@/components/ui/dropdown-menu";
+import { signOut, useSession } from "next-auth/react";
+import { useRouter } from "next/navigation";
+
+export function UserNav() {
+  const { data: session } = useSession();
+  const router = useRouter();
+
+  // Helper function to get initials from name
+  const getInitials = (name: string) => {
+    return name
+      ?.split(" ")
+      .map((n) => n[0])
+      .join("")
+      .toUpperCase()
+      .substring(0, 2) || "US";
+  };
+
+  const userName = session?.user?.name || "User";
+  const userEmail = session?.user?.email || "user@example.com";
+  // ใช้ role หรือ organization หากมีใน session (ต้องแก้ type ใน next-auth.d.ts แล้ว)
+  const userRole = session?.user?.role || "Viewer";
+
+  const handleLogout = async () => {
+    await signOut({ redirect: false });
+    router.push("/login");
+  };
+
+  return (
+    <DropdownMenu>
+      <DropdownMenuTrigger asChild>
+        <Button variant="ghost" className="relative h-8 w-8 rounded-full">
+          <Avatar className="h-8 w-8">
+            {/* ใส่ URL รูปถ้ามี */}
+            <AvatarImage src={session?.user?.image || ""} alt={userName} />
+            <AvatarFallback>{getInitials(userName)}</AvatarFallback>
+          </Avatar>
+        </Button>
+      </DropdownMenuTrigger>
+      <DropdownMenuContent className="w-56" align="end" forceMount>
+        <DropdownMenuLabel className="font-normal">
+          <div className="flex flex-col space-y-1">
+            <p className="text-sm font-medium leading-none">{userName}</p>
+            <p className="text-xs leading-none text-muted-foreground">
+              {userEmail}
+            </p>
+            <p className="text-xs leading-none text-primary mt-1 font-semibold">
+              {userRole}
+            </p>
+          </div>
+        </DropdownMenuLabel>
+        <DropdownMenuSeparator />
+        <DropdownMenuGroup>
+          <DropdownMenuItem onClick={() => router.push('/profile')}>
+            Profile
+            <DropdownMenuShortcut>⇧⌘P</DropdownMenuShortcut>
+          </DropdownMenuItem>
+          <DropdownMenuItem onClick={() => router.push('/settings')}>
+            Settings
+            <DropdownMenuShortcut>⌘S</DropdownMenuShortcut>
+          </DropdownMenuItem>
+        </DropdownMenuGroup>
+        <DropdownMenuSeparator />
+        <DropdownMenuItem onClick={handleLogout}>
+          Log out
+          <DropdownMenuShortcut>⇧⌘Q</DropdownMenuShortcut>
+        </DropdownMenuItem>
+      </DropdownMenuContent>
+    </DropdownMenu>
+  );
+}
--- a/frontend/components/ui/avatar.tsx
+++ b/frontend/components/ui/avatar.tsx
@@ -0,0 +1,50 @@
+// File: components/ui/avatar.tsx
+"use client"
+
+import * as React from "react"
+import * as AvatarPrimitive from "@radix-ui/react-avatar"
+import { cn } from "@/lib/utils"
+
+const Avatar = React.forwardRef<
+  React.ElementRef<typeof AvatarPrimitive.Root>,
+  React.ComponentPropsWithoutRef<typeof AvatarPrimitive.Root>
+>(({ className, ...props }, ref) => (
+  <AvatarPrimitive.Root
+    ref={ref}
+    className={cn(
+      "relative flex h-10 w-10 shrink-0 overflow-hidden rounded-full",
+      className
+    )}
+    {...props}
+  />
+))
+Avatar.displayName = AvatarPrimitive.Root.displayName
+
+const AvatarImage = React.forwardRef<
+  React.ElementRef<typeof AvatarPrimitive.Image>,
+  React.ComponentPropsWithoutRef<typeof AvatarPrimitive.Image>
+>(({ className, ...props }, ref) => (
+  <AvatarPrimitive.Image
+    ref={ref}
+    className={cn("aspect-square h-full w-full", className)}
+    {...props}
+  />
+))
+AvatarImage.displayName = AvatarPrimitive.Image.displayName
+
+const AvatarFallback = React.forwardRef<
+  React.ElementRef<typeof AvatarPrimitive.Fallback>,
+  React.ComponentPropsWithoutRef<typeof AvatarPrimitive.Fallback>
+>(({ className, ...props }, ref) => (
+  <AvatarPrimitive.Fallback
+    ref={ref}
+    className={cn(
+      "flex h-full w-full items-center justify-center rounded-full bg-muted",
+      className
+    )}
+    {...props}
+  />
+))
+AvatarFallback.displayName = AvatarPrimitive.Fallback.displayName
+
+export { Avatar, AvatarImage, AvatarFallback }
--- a/frontend/components/ui/badge.tsx
+++ b/frontend/components/ui/badge.tsx
@@ -0,0 +1,40 @@
+// File: components/ui/badge.tsx
+import * as React from "react"
+import { cva, type VariantProps } from "class-variance-authority"
+import { cn } from "@/lib/utils"
+
+const badgeVariants = cva(
+  "inline-flex items-center rounded-full border px-2.5 py-0.5 text-xs font-semibold transition-colors focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2",
+  {
+    variants: {
+      variant: {
+        default:
+          "border-transparent bg-primary text-primary-foreground hover:bg-primary/80",
+        secondary:
+          "border-transparent bg-secondary text-secondary-foreground hover:bg-secondary/80",
+        destructive:
+          "border-transparent bg-destructive text-destructive-foreground hover:bg-destructive/80",
+        outline: "text-foreground",
+        success: 
+          "border-transparent bg-green-500 text-white hover:bg-green-600",
+        warning:
+          "border-transparent bg-yellow-500 text-white hover:bg-yellow-600",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+    },
+  }
+)
+
+export interface BadgeProps
+  extends React.HTMLAttributes<HTMLDivElement>,
+    VariantProps<typeof badgeVariants> {}
+
+function Badge({ className, variant, ...props }: BadgeProps) {
+  return (
+    <div className={cn(badgeVariants({ variant }), className)} {...props} />
+  )
+}
+
+export { Badge, badgeVariants }
--- a/frontend/components/ui/button.tsx
+++ b/frontend/components/ui/button.tsx
@@ -0,0 +1,59 @@
+// File: components/ui/button.tsx
+import * as React from "react"
+import { Slot } from "@radix-ui/react-slot"
+import { cva, type VariantProps } from "class-variance-authority"
+import { cn } from "@/lib/utils"
+
+// กำหนด Variants ของปุ่มโดยใช้ cva
+const buttonVariants = cva(
+  "inline-flex items-center justify-center whitespace-nowrap rounded-md text-sm font-medium ring-offset-background transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50",
+  {
+    variants: {
+      variant: {
+        default: "bg-primary text-primary-foreground hover:bg-primary/90",
+        destructive:
+          "bg-destructive text-destructive-foreground hover:bg-destructive/90",
+        outline:
+          "border border-input bg-background hover:bg-accent hover:text-accent-foreground",
+        secondary:
+          "bg-secondary text-secondary-foreground hover:bg-secondary/80",
+        ghost: "hover:bg-accent hover:text-accent-foreground",
+        link: "text-primary underline-offset-4 hover:underline",
+      },
+      size: {
+        default: "h-10 px-4 py-2",
+        sm: "h-9 rounded-md px-3",
+        lg: "h-11 rounded-md px-8",
+        icon: "h-10 w-10",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+      size: "default",
+    },
+  }
+)
+
+export interface ButtonProps
+  extends React.ButtonHTMLAttributes<HTMLButtonElement>,
+    VariantProps<typeof buttonVariants> {
+  asChild?: boolean
+}
+
+// Button Component หลัก
+const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
+  ({ className, variant, size, asChild = false, ...props }, ref) => {
+    // ถ้า asChild เป็น true จะใช้ Slot เพื่อส่ง props ไปยัง child component แทน
+    const Comp = asChild ? Slot : "button"
+    return (
+      <Comp
+        className={cn(buttonVariants({ variant, size, className }))}
+        ref={ref}
+        {...props}
+      />
+    )
+  }
+)
+Button.displayName = "Button"
+
+export { Button, buttonVariants }
--- a/frontend/components/ui/calendar.tsx
+++ b/frontend/components/ui/calendar.tsx
@@ -0,0 +1,66 @@
+// File: components/ui/calendar.tsx
+"use client"
+
+import * as React from "react"
+import { ChevronLeft, ChevronRight } from "lucide-react"
+import { DayPicker } from "react-day-picker"
+import { cn } from "@/lib/utils"
+import { buttonVariants } from "@/components/ui/button"
+
+export type CalendarProps = React.ComponentProps<typeof DayPicker>
+
+function Calendar({
+  className,
+  classNames,
+  showOutsideDays = true,
+  ...props
+}: CalendarProps) {
+  return (
+    <DayPicker
+      showOutsideDays={showOutsideDays}
+      className={cn("p-3", className)}
+      classNames={{
+        months: "flex flex-col sm:flex-row space-y-4 sm:space-x-4 sm:space-y-0",
+        month: "space-y-4",
+        caption: "flex justify-center pt-1 relative items-center",
+        caption_label: "text-sm font-medium",
+        nav: "space-x-1 flex items-center",
+        nav_button: cn(
+          buttonVariants({ variant: "outline" }),
+          "h-7 w-7 bg-transparent p-0 opacity-50 hover:opacity-100"
+        ),
+        nav_button_previous: "absolute left-1",
+        nav_button_next: "absolute right-1",
+        table: "w-full border-collapse space-y-1",
+        head_row: "flex",
+        head_cell:
+          "text-muted-foreground rounded-md w-9 font-normal text-[0.8rem]",
+        row: "flex w-full mt-2",
+        cell: "h-9 w-9 text-center text-sm p-0 relative [&:has([aria-selected].day-range-end)]:rounded-r-md [&:has([aria-selected].day-outside)]:bg-accent/50 [&:has([aria-selected])]:bg-accent first:[&:has([aria-selected])]:rounded-l-md last:[&:has([aria-selected])]:rounded-r-md focus-within:relative focus-within:z-20",
+        day: cn(
+          buttonVariants({ variant: "ghost" }),
+          "h-9 w-9 p-0 font-normal aria-selected:opacity-100"
+        ),
+        day_range_end: "day-range-end",
+        day_selected:
+          "bg-primary text-primary-foreground hover:bg-primary hover:text-primary-foreground focus:bg-primary focus:text-primary-foreground",
+        day_today: "bg-accent text-accent-foreground",
+        day_outside:
+          "day-outside text-muted-foreground opacity-50 aria-selected:bg-accent/50 aria-selected:text-muted-foreground aria-selected:opacity-30",
+        day_disabled: "text-muted-foreground opacity-50",
+        day_range_middle:
+          "aria-selected:bg-accent aria-selected:text-accent-foreground",
+        day_hidden: "invisible",
+        ...classNames,
+      }}
+      components={{
+        IconLeft: ({ ...props }) => <ChevronLeft className="h-4 w-4" />,
+        IconRight: ({ ...props }) => <ChevronRight className="h-4 w-4" />,
+      }}
+      {...props}
+    />
+  )
+}
+Calendar.displayName = "Calendar"
+
+export { Calendar }
--- a/frontend/components/ui/card.tsx
+++ b/frontend/components/ui/card.tsx
@@ -0,0 +1,79 @@
+// File: components/ui/card.tsx
+import * as React from "react"
+import { cn } from "@/lib/utils"
+
+const Card = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div
+    ref={ref}
+    className={cn(
+      "rounded-lg border bg-card text-card-foreground shadow-sm",
+      className
+    )}
+    {...props}
+  />
+))
+Card.displayName = "Card"
+
+const CardHeader = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div
+    ref={ref}
+    className={cn("flex flex-col space-y-1.5 p-6", className)}
+    {...props}
+  />
+))
+CardHeader.displayName = "CardHeader"
+
+const CardTitle = React.forwardRef<
+  HTMLParagraphElement,
+  React.HTMLAttributes<HTMLHeadingElement>
+>(({ className, ...props }, ref) => (
+  <h3
+    ref={ref}
+    className={cn(
+      "text-2xl font-semibold leading-none tracking-tight",
+      className
+    )}
+    {...props}
+  />
+))
+CardTitle.displayName = "CardTitle"
+
+const CardDescription = React.forwardRef<
+  HTMLParagraphElement,
+  React.HTMLAttributes<HTMLParagraphElement>
+>(({ className, ...props }, ref) => (
+  <p
+    ref={ref}
+    className={cn("text-sm text-muted-foreground", className)}
+    {...props}
+  />
+))
+CardDescription.displayName = "CardDescription"
+
+const CardContent = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div ref={ref} className={cn("p-6 pt-0", className)} {...props} />
+))
+CardContent.displayName = "CardContent"
+
+const CardFooter = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div
+    ref={ref}
+    className={cn("flex items-center p-6 pt-0", className)}
+    {...props}
+  />
+))
+CardFooter.displayName = "CardFooter"
+
+export { Card, CardHeader, CardFooter, CardTitle, CardDescription, CardContent }
--- a/frontend/components/ui/checkbox.tsx
+++ b/frontend/components/ui/checkbox.tsx
@@ -0,0 +1,30 @@
+// File: components/ui/checkbox.tsx
+"use client"
+
+import * as React from "react"
+import * as CheckboxPrimitive from "@radix-ui/react-checkbox"
+import { Check } from "lucide-react"
+import { cn } from "@/lib/utils"
+
+const Checkbox = React.forwardRef<
+  React.ElementRef<typeof CheckboxPrimitive.Root>,
+  React.ComponentPropsWithoutRef<typeof CheckboxPrimitive.Root>
+>(({ className, ...props }, ref) => (
+  <CheckboxPrimitive.Root
+    ref={ref}
+    className={cn(
+      "peer h-4 w-4 shrink-0 rounded-sm border border-primary ring-offset-background focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50 data-[state=checked]:bg-primary data-[state=checked]:text-primary-foreground",
+      className
+    )}
+    {...props}
+  >
+    <CheckboxPrimitive.Indicator
+      className={cn("flex items-center justify-center text-current")}
+    >
+      <Check className="h-4 w-4" />
+    </CheckboxPrimitive.Indicator>
+  </CheckboxPrimitive.Root>
+))
+Checkbox.displayName = CheckboxPrimitive.Root.displayName
+
+export { Checkbox }
--- a/frontend/components/ui/dropdown-menu.tsx
+++ b/frontend/components/ui/dropdown-menu.tsx
@@ -0,0 +1,143 @@
+// File: components/ui/dropdown-menu.tsx
+"use client"
+
+import * as React from "react"
+import * as DropdownMenuPrimitive from "@radix-ui/react-dropdown-menu"
+import { Check, ChevronRight, Circle } from "lucide-react"
+import { cn } from "@/lib/utils"
+
+const DropdownMenu = DropdownMenuPrimitive.Root
+const DropdownMenuTrigger = DropdownMenuPrimitive.Trigger
+const DropdownMenuContent = React.forwardRef<
+  React.ElementRef<typeof DropdownMenuPrimitive.Content>,
+  React.ComponentPropsWithoutRef<typeof DropdownMenuPrimitive.Content>
+>(({ className, sideOffset = 4, ...props }, ref) => (
+  <DropdownMenuPrimitive.Portal>
+    <DropdownMenuPrimitive.Content
+      ref={ref}
+      sideOffset={sideOffset}
+      className={cn(
+        "z-50 min-w-[8rem] overflow-hidden rounded-md border bg-popover p-1 text-popover-foreground shadow-md data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2",
+        className
+      )}
+      {...props}
+    />
+  </DropdownMenuPrimitive.Portal>
+))
+DropdownMenuContent.displayName = DropdownMenuPrimitive.Content.displayName
+
+const DropdownMenuItem = React.forwardRef<
+  React.ElementRef<typeof DropdownMenuPrimitive.Item>,
+  React.ComponentPropsWithoutRef<typeof DropdownMenuPrimitive.Item> & {
+    inset?: boolean
+  }
+>(({ className, inset, ...props }, ref) => (
+  <DropdownMenuPrimitive.Item
+    ref={ref}
+    className={cn(
+      "relative flex cursor-default select-none items-center rounded-sm px-2 py-1.5 text-sm outline-none transition-colors focus:bg-accent focus:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50",
+      inset && "pl-8",
+      className
+    )}
+    {...props}
+  />
+))
+DropdownMenuItem.displayName = DropdownMenuPrimitive.Item.displayName
+
+const DropdownMenuLabel = React.forwardRef<
+  React.ElementRef<typeof DropdownMenuPrimitive.Label>,
+  React.ComponentPropsWithoutRef<typeof DropdownMenuPrimitive.Label> & {
+    inset?: boolean
+  }
+>(({ className, inset, ...props }, ref) => (
+  <DropdownMenuPrimitive.Label
+    ref={ref}
+    className={cn(
+      "px-2 py-1.5 text-sm font-semibold",
+      inset && "pl-8",
+      className
+    )}
+    {...props}
+  />
+))
+DropdownMenuLabel.displayName = DropdownMenuPrimitive.Label.displayName
+
+const DropdownMenuSeparator = React.forwardRef<
+  React.ElementRef<typeof DropdownMenuPrimitive.Separator>,
+  React.ComponentPropsWithoutRef<typeof DropdownMenuPrimitive.Separator>
+>(({ className, ...props }, ref) => (
+  <DropdownMenuPrimitive.Separator
+    ref={ref}
+    className={cn("-mx-1 my-1 h-px bg-muted", className)}
+    {...props}
+  />
+))
+DropdownMenuSeparator.displayName = DropdownMenuPrimitive.Separator.displayName
+
+// Export ส่วนประกอบอื่นๆ ที่อาจใช้ (Shortcut, Group, Sub) เพื่อความครบถ้วน
+const DropdownMenuGroup = DropdownMenuPrimitive.Group
+const DropdownMenuPortal = DropdownMenuPrimitive.Portal
+const DropdownMenuSub = DropdownMenuPrimitive.Sub
+const DropdownMenuSubTrigger = React.forwardRef<
+  React.ElementRef<typeof DropdownMenuPrimitive.SubTrigger>,
+  React.ComponentPropsWithoutRef<typeof DropdownMenuPrimitive.SubTrigger> & {
+    inset?: boolean
+  }
+>(({ className, inset, children, ...props }, ref) => (
+  <DropdownMenuPrimitive.SubTrigger
+    ref={ref}
+    className={cn(
+      "flex cursor-default select-none items-center rounded-sm px-2 py-1.5 text-sm outline-none focus:bg-accent data-[state=open]:bg-accent",
+      inset && "pl-8",
+      className
+    )}
+    {...props}
+  >
+    {children}
+    <ChevronRight className="ml-auto h-4 w-4" />
+  </DropdownMenuPrimitive.SubTrigger>
+))
+DropdownMenuSubTrigger.displayName = DropdownMenuPrimitive.SubTrigger.displayName
+
+const DropdownMenuSubContent = React.forwardRef<
+  React.ElementRef<typeof DropdownMenuPrimitive.SubContent>,
+  React.ComponentPropsWithoutRef<typeof DropdownMenuPrimitive.SubContent>
+>(({ className, ...props }, ref) => (
+  <DropdownMenuPrimitive.SubContent
+    ref={ref}
+    className={cn(
+      "z-50 min-w-[8rem] overflow-hidden rounded-md border bg-popover p-1 text-popover-foreground shadow-lg data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2",
+      className
+    )}
+    {...props}
+  />
+))
+DropdownMenuSubContent.displayName = DropdownMenuPrimitive.SubContent.displayName
+
+const DropdownMenuShortcut = ({
+  className,
+  ...props
+}: React.HTMLAttributes<HTMLSpanElement>) => {
+  return (
+    <span
+      className={cn("ml-auto text-xs tracking-widest opacity-60", className)}
+      {...props}
+    />
+  )
+}
+DropdownMenuShortcut.displayName = "DropdownMenuShortcut"
+
+export {
+  DropdownMenu,
+  DropdownMenuTrigger,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuLabel,
+  DropdownMenuSeparator,
+  DropdownMenuGroup,
+  DropdownMenuPortal,
+  DropdownMenuSub,
+  DropdownMenuSubContent,
+  DropdownMenuSubTrigger,
+  DropdownMenuShortcut,
+}
--- a/frontend/components/ui/input.tsx
+++ b/frontend/components/ui/input.tsx
@@ -0,0 +1,25 @@
+// File: components/ui/input.tsx
+import * as React from "react"
+import { cn } from "@/lib/utils"
+
+export interface InputProps
+  extends React.InputHTMLAttributes<HTMLInputElement> {}
+
+const Input = React.forwardRef<HTMLInputElement, InputProps>(
+  ({ className, type, ...props }, ref) => {
+    return (
+      <input
+        type={type}
+        className={cn(
+          "flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50",
+          className
+        )}
+        ref={ref}
+        {...props}
+      />
+    )
+  }
+)
+Input.displayName = "Input"
+
+export { Input }
--- a/frontend/components/ui/label.tsx
+++ b/frontend/components/ui/label.tsx
@@ -0,0 +1,26 @@
+// File: components/ui/label.tsx
+"use client" // ต้องระบุว่าเป็น Client Component เนื่องจากมีการใช้ Hooks ภายใน Radix
+
+import * as React from "react"
+import * as LabelPrimitive from "@radix-ui/react-label"
+import { cva, type VariantProps } from "class-variance-authority"
+import { cn } from "@/lib/utils"
+
+const labelVariants = cva(
+  "text-sm font-medium leading-none peer-disabled:cursor-not-allowed peer-disabled:opacity-70"
+)
+
+const Label = React.forwardRef<
+  React.ElementRef<typeof LabelPrimitive.Root>,
+  React.ComponentPropsWithoutRef<typeof LabelPrimitive.Root> &
+    VariantProps<typeof labelVariants>
+>(({ className, ...props }, ref) => (
+  <LabelPrimitive.Root
+    ref={ref}
+    className={cn(labelVariants(), className)}
+    {...props}
+  />
+))
+Label.displayName = LabelPrimitive.Root.displayName
+
+export { Label }
--- a/frontend/components/ui/popover.tsx
+++ b/frontend/components/ui/popover.tsx
@@ -0,0 +1,30 @@
+// File: components/ui/popover.tsx
+"use client"
+
+import * as React from "react"
+import * as PopoverPrimitive from "@radix-ui/react-popover"
+import { cn } from "@/lib/utils"
+
+const Popover = PopoverPrimitive.Root
+const PopoverTrigger = PopoverPrimitive.Trigger
+
+const PopoverContent = React.forwardRef<
+  React.ElementRef<typeof PopoverPrimitive.Content>,
+  React.ComponentPropsWithoutRef<typeof PopoverPrimitive.Content>
+>(({ className, align = "center", sideOffset = 4, ...props }, ref) => (
+  <PopoverPrimitive.Portal>
+    <PopoverPrimitive.Content
+      ref={ref}
+      align={align}
+      sideOffset={sideOffset}
+      className={cn(
+        "z-50 w-72 rounded-md border bg-popover p-4 text-popover-foreground shadow-md outline-none data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2",
+        className
+      )}
+      {...props}
+    />
+  </PopoverPrimitive.Portal>
+))
+PopoverContent.displayName = PopoverPrimitive.Content.displayName
+
+export { Popover, PopoverTrigger, PopoverContent }
--- a/frontend/components/ui/progress.tsx
+++ b/frontend/components/ui/progress.tsx
@@ -0,0 +1,28 @@
+// File: components/ui/progress.tsx
+"use client"
+
+import * as React from "react"
+import * as ProgressPrimitive from "@radix-ui/react-progress"
+import { cn } from "@/lib/utils"
+
+const Progress = React.forwardRef<
+  React.ElementRef<typeof ProgressPrimitive.Root>,
+  React.ComponentPropsWithoutRef<typeof ProgressPrimitive.Root>
+>(({ className, value, ...props }, ref) => (
+  <ProgressPrimitive.Root
+    ref={ref}
+    className={cn(
+      "relative h-4 w-full overflow-hidden rounded-full bg-secondary",
+      className
+    )}
+    {...props}
+  >
+    <ProgressPrimitive.Indicator
+      className="h-full w-full flex-1 bg-primary transition-all"
+      style={{ transform: `translateX(-${100 - (value || 0)}%)` }}
+    />
+  </ProgressPrimitive.Root>
+))
+Progress.displayName = ProgressPrimitive.Root.displayName
+
+export { Progress }
--- a/frontend/components/ui/scroll-area.tsx
+++ b/frontend/components/ui/scroll-area.tsx
@@ -0,0 +1,48 @@
+"use client"
+
+import * as React from "react"
+import * as ScrollAreaPrimitive from "@radix-ui/react-scroll-area"
+
+import { cn } from "@/lib/utils"
+
+const ScrollArea = React.forwardRef<
+  React.ElementRef<typeof ScrollAreaPrimitive.Root>,
+  React.ComponentPropsWithoutRef<typeof ScrollAreaPrimitive.Root>
+>(({ className, children, ...props }, ref) => (
+  <ScrollAreaPrimitive.Root
+    ref={ref}
+    className={cn("relative overflow-hidden", className)}
+    {...props}
+  >
+    <ScrollAreaPrimitive.Viewport className="h-full w-full rounded-[inherit]">
+      {children}
+    </ScrollAreaPrimitive.Viewport>
+    <ScrollBar />
+    <ScrollAreaPrimitive.Corner />
+  </ScrollAreaPrimitive.Root>
+))
+ScrollArea.displayName = ScrollAreaPrimitive.Root.displayName
+
+const ScrollBar = React.forwardRef<
+  React.ElementRef<typeof ScrollAreaPrimitive.ScrollAreaScrollbar>,
+  React.ComponentPropsWithoutRef<typeof ScrollAreaPrimitive.ScrollAreaScrollbar>
+>(({ className, orientation = "vertical", ...props }, ref) => (
+  <ScrollAreaPrimitive.ScrollAreaScrollbar
+    ref={ref}
+    orientation={orientation}
+    className={cn(
+      "flex touch-none select-none transition-colors",
+      orientation === "vertical" &&
+        "h-full w-2.5 border-l border-l-transparent p-[1px]",
+      orientation === "horizontal" &&
+        "h-2.5 flex-col border-t border-t-transparent p-[1px]",
+      className
+    )}
+    {...props}
+  >
+    <ScrollAreaPrimitive.ScrollAreaThumb className="relative flex-1 rounded-full bg-border" />
+  </ScrollAreaPrimitive.ScrollAreaScrollbar>
+))
+ScrollBar.displayName = ScrollAreaPrimitive.ScrollAreaScrollbar.displayName
+
+export { ScrollArea, ScrollBar }
--- a/frontend/components/ui/select.tsx
+++ b/frontend/components/ui/select.tsx
@@ -0,0 +1,158 @@
+// File: components/ui/select.tsx
+"use client"
+
+import * as React from "react"
+import * as SelectPrimitive from "@radix-ui/react-select"
+import { Check, ChevronDown, ChevronUp } from "lucide-react"
+import { cn } from "@/lib/utils"
+
+const Select = SelectPrimitive.Root
+const SelectGroup = SelectPrimitive.Group
+const SelectValue = SelectPrimitive.Value
+
+const SelectTrigger = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.Trigger>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.Trigger>
+>(({ className, children, ...props }, ref) => (
+  <SelectPrimitive.Trigger
+    ref={ref}
+    className={cn(
+      "flex h-10 w-full items-center justify-between rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background placeholder:text-muted-foreground focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50 [&>span]:line-clamp-1",
+      className
+    )}
+    {...props}
+  >
+    {children}
+    <SelectPrimitive.Icon asChild>
+      <ChevronDown className="h-4 w-4 opacity-50" />
+    </SelectPrimitive.Icon>
+  </SelectPrimitive.Trigger>
+))
+SelectTrigger.displayName = SelectPrimitive.Trigger.displayName
+
+const SelectScrollUpButton = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.ScrollUpButton>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.ScrollUpButton>
+>(({ className, ...props }, ref) => (
+  <SelectPrimitive.ScrollUpButton
+    ref={ref}
+    className={cn(
+      "flex cursor-default items-center justify-center py-1",
+      className
+    )}
+    {...props}
+  >
+    <ChevronUp className="h-4 w-4" />
+  </SelectPrimitive.ScrollUpButton>
+))
+SelectScrollUpButton.displayName = SelectPrimitive.ScrollUpButton.displayName
+
+const SelectScrollDownButton = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.ScrollDownButton>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.ScrollDownButton>
+>(({ className, ...props }, ref) => (
+  <SelectPrimitive.ScrollDownButton
+    ref={ref}
+    className={cn(
+      "flex cursor-default items-center justify-center py-1",
+      className
+    )}
+    {...props}
+  >
+    <ChevronDown className="h-4 w-4" />
+  </SelectPrimitive.ScrollDownButton>
+))
+SelectScrollDownButton.displayName =
+  SelectPrimitive.ScrollDownButton.displayName
+
+const SelectContent = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.Content>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.Content>
+>(({ className, children, position = "popper", ...props }, ref) => (
+  <SelectPrimitive.Portal>
+    <SelectPrimitive.Content
+      ref={ref}
+      className={cn(
+        "relative z-50 max-h-96 min-w-[8rem] overflow-hidden rounded-md border bg-popover text-popover-foreground shadow-md data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2",
+        position === "popper" &&
+          "data-[side=bottom]:translate-y-1 data-[side=left]:-translate-x-1 data-[side=right]:translate-x-1 data-[side=top]:-translate-y-1",
+        className
+      )}
+      position={position}
+      {...props}
+    >
+      <SelectScrollUpButton />
+      <SelectPrimitive.Viewport
+        className={cn(
+          "p-1",
+          position === "popper" &&
+            "h-[var(--radix-select-trigger-height)] w-full min-w-[var(--radix-select-trigger-width)]"
+        )}
+      >
+        {children}
+      </SelectPrimitive.Viewport>
+      <SelectScrollDownButton />
+    </SelectPrimitive.Content>
+  </SelectPrimitive.Portal>
+))
+SelectContent.displayName = SelectPrimitive.Content.displayName
+
+const SelectLabel = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.Label>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.Label>
+>(({ className, ...props }, ref) => (
+  <SelectPrimitive.Label
+    ref={ref}
+    className={cn("py-1.5 pl-8 pr-2 text-sm font-semibold", className)}
+    {...props}
+  />
+))
+SelectLabel.displayName = SelectPrimitive.Label.displayName
+
+const SelectItem = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.Item>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.Item>
+>(({ className, children, ...props }, ref) => (
+  <SelectPrimitive.Item
+    ref={ref}
+    className={cn(
+      "relative flex w-full cursor-default select-none items-center rounded-sm py-1.5 pl-8 pr-2 text-sm outline-none focus:bg-accent focus:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50",
+      className
+    )}
+    {...props}
+  >
+    <span className="absolute left-2 flex h-3.5 w-3.5 items-center justify-center">
+      <SelectPrimitive.ItemIndicator>
+        <Check className="h-4 w-4" />
+      </SelectPrimitive.ItemIndicator>
+    </span>
+
+    <SelectPrimitive.ItemText>{children}</SelectPrimitive.ItemText>
+  </SelectPrimitive.Item>
+))
+SelectItem.displayName = SelectPrimitive.Item.displayName
+
+const SelectSeparator = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.Separator>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.Separator>
+>(({ className, ...props }, ref) => (
+  <SelectPrimitive.Separator
+    ref={ref}
+    className={cn("-mx-1 my-1 h-px bg-muted", className)}
+    {...props}
+  />
+))
+SelectSeparator.displayName = SelectPrimitive.Separator.displayName
+
+export {
+  Select,
+  SelectGroup,
+  SelectValue,
+  SelectTrigger,
+  SelectContent,
+  SelectLabel,
+  SelectItem,
+  SelectSeparator,
+  SelectScrollUpButton,
+  SelectScrollDownButton,
+}
--- a/frontend/components/ui/switch.tsx
+++ b/frontend/components/ui/switch.tsx
@@ -0,0 +1,29 @@
+// File: components/ui/switch.tsx
+"use client"
+
+import * as React from "react"
+import * as SwitchPrimitive from "@radix-ui/react-switch"
+import { cn } from "@/lib/utils"
+
+const Switch = React.forwardRef<
+  React.ElementRef<typeof SwitchPrimitive.Root>,
+  React.ComponentPropsWithoutRef<typeof SwitchPrimitive.Root>
+>(({ className, ...props }, ref) => (
+  <SwitchPrimitive.Root
+    className={cn(
+      "peer inline-flex h-[24px] w-[44px] shrink-0 cursor-pointer items-center rounded-full border-2 border-transparent transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 focus-visible:ring-offset-background disabled:cursor-not-allowed disabled:opacity-50 data-[state=checked]:bg-primary data-[state=unchecked]:bg-input",
+      className
+    )}
+    {...props}
+    ref={ref}
+  >
+    <SwitchPrimitive.Thumb
+      className={cn(
+        "pointer-events-none block h-5 w-5 rounded-full bg-background shadow-lg ring-0 transition-transform data-[state=checked]:translate-x-5 data-[state=unchecked]:translate-x-0"
+      )}
+    />
+  </SwitchPrimitive.Root>
+))
+Switch.displayName = SwitchPrimitive.Root.displayName
+
+export { Switch }
--- a/frontend/components/ui/table.tsx
+++ b/frontend/components/ui/table.tsx
@@ -0,0 +1,117 @@
+// File: components/ui/table.tsx
+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 TableFooter = React.forwardRef<
+  HTMLTableSectionElement,
+  React.HTMLAttributes<HTMLTableSectionElement>
+>(({ className, ...props }, ref) => (
+  <tfoot
+    ref={ref}
+    className={cn(
+      "border-t bg-muted/50 font-medium [&>tr]:last:border-b-0",
+      className
+    )}
+    {...props}
+  />
+))
+TableFooter.displayName = "TableFooter"
+
+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"
+
+const TableCaption = React.forwardRef<
+  HTMLTableCaptionElement,
+  React.HTMLAttributes<HTMLTableCaptionElement>
+>(({ className, ...props }, ref) => (
+  <caption
+    ref={ref}
+    className={cn("mt-4 text-sm text-muted-foreground", className)}
+    {...props}
+  />
+))
+TableCaption.displayName = "TableCaption"
+
+export {
+  Table,
+  TableHeader,
+  TableBody,
+  TableFooter,
+  TableHead,
+  TableRow,
+  TableCell,
+  TableCaption,
+}
--- a/frontend/components/ui/tabs.tsx
+++ b/frontend/components/ui/tabs.tsx
@@ -0,0 +1,55 @@
+// File: components/ui/tabs.tsx
+"use client"
+
+import * as React from "react"
+import * as TabsPrimitive from "@radix-ui/react-tabs"
+import { cn } from "@/lib/utils"
+
+const Tabs = TabsPrimitive.Root
+
+const TabsList = React.forwardRef<
+  React.ElementRef<typeof TabsPrimitive.List>,
+  React.ComponentPropsWithoutRef<typeof TabsPrimitive.List>
+>(({ className, ...props }, ref) => (
+  <TabsPrimitive.List
+    ref={ref}
+    className={cn(
+      "inline-flex h-10 items-center justify-center rounded-md bg-muted p-1 text-muted-foreground",
+      className
+    )}
+    {...props}
+  />
+))
+TabsList.displayName = TabsPrimitive.List.displayName
+
+const TabsTrigger = React.forwardRef<
+  React.ElementRef<typeof TabsPrimitive.Trigger>,
+  React.ComponentPropsWithoutRef<typeof TabsPrimitive.Trigger>
+>(({ className, ...props }, ref) => (
+  <TabsPrimitive.Trigger
+    ref={ref}
+    className={cn(
+      "inline-flex items-center justify-center whitespace-nowrap rounded-sm px-3 py-1.5 text-sm font-medium ring-offset-background transition-all focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50 data-[state=active]:bg-background data-[state=active]:text-foreground data-[state=active]:shadow-sm",
+      className
+    )}
+    {...props}
+  />
+))
+TabsTrigger.displayName = TabsPrimitive.Trigger.displayName
+
+const TabsContent = React.forwardRef<
+  React.ElementRef<typeof TabsPrimitive.Content>,
+  React.ComponentPropsWithoutRef<typeof TabsPrimitive.Content>
+>(({ className, ...props }, ref) => (
+  <TabsPrimitive.Content
+    ref={ref}
+    className={cn(
+      "mt-2 ring-offset-background focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2",
+      className
+    )}
+    {...props}
+  />
+))
+TabsContent.displayName = TabsPrimitive.Content.displayName
+
+export { Tabs, TabsList, TabsTrigger, TabsContent }
--- a/frontend/components/ui/textarea.tsx
+++ b/frontend/components/ui/textarea.tsx
@@ -0,0 +1,24 @@
+// File: components/ui/textarea.tsx
+import * as React from "react"
+import { cn } from "@/lib/utils"
+
+export interface TextareaProps
+  extends React.TextareaHTMLAttributes<HTMLTextAreaElement> {}
+
+const Textarea = React.forwardRef<HTMLTextAreaElement, TextareaProps>(
+  ({ className, ...props }, ref) => {
+    return (
+      <textarea
+        className={cn(
+          "flex min-h-[80px] w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50",
+          className
+        )}
+        ref={ref}
+        {...props}
+      />
+    )
+  }
+)
+Textarea.displayName = "Textarea"
+
+export { Textarea }