[CLAUDE] FE-User+FE-Admin: bỏ tabs, Chi tiết + Lịch sử 7/3 grid dưới Overview

User feedback: thay vì click tab để switch, hiển thị Chi tiết + Lịch sử
LUÔN ngay dưới Tổng quan content. Tỷ lệ cột 7 (Chi tiết) - 3 (Lịch sử
điều chỉnh).

## Thay đổi (apply 2 app)

ContractDetailContent.tsx:
- Bỏ TabsNav + tab state + TabButton helper
- Bỏ conditional render theo tab
- Tổng quan content (Info / Comments / Attachments) render flat đầu tiên
- Thêm grid lg:grid-cols-10 dưới cùng:
  - lg:col-span-7 → ContractDetailsTab (line items)
  - lg:col-span-3 → ContractChangelogsTab (timeline)
- Mobile (<lg): stack vertical 1 cột, Chi tiết trên, Lịch sử dưới

## Build verify

- fe-user: tsc + vite pass (17.23s)
- fe-admin: tsc + vite pass (8.12s)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

fe-admin/src/components/contracts/ContractDetailContent.tsx

@@ -4,7 +4,7 @@
 // trong WorkflowHistoryPanel (Panel 3).
 import { useState, type FormEvent } from 'react'
 import { useMutation, useQueryClient } from '@tanstack/react-query'
-import { ArrowLeft, CheckCircle2, MessageSquare, XCircle, Info, ListChecks, History } from 'lucide-react'
+import { ArrowLeft, CheckCircle2, MessageSquare, XCircle, ListChecks, History } from 'lucide-react'
 import { toast } from 'sonner'
 import { PhaseBadge } from '@/components/PhaseBadge'
 import { SlaTimer } from '@/components/SlaTimer'
@@ -17,7 +17,6 @@ import { Textarea } from '@/components/ui/Textarea'
 import { Dialog } from '@/components/ui/Dialog'
 import { api } from '@/lib/api'
 import { getErrorMessage } from '@/lib/apiError'
-import { cn } from '@/lib/cn'
 import {
   ApprovalDecision,
   ContractPhase,
@@ -29,8 +28,6 @@ import { ContractTypeLabel } from '@/types/forms'
 const fmt = (s: string) => new Date(s).toLocaleString('vi-VN')
 const fmtMoney = (v: number) => v.toLocaleString('vi-VN') + ' VND'
 
-type Tab = 'overview' | 'details' | 'history'
-
 export function ContractDetailContent({
   contract: c,
   onBack,
@@ -45,7 +42,6 @@ export function ContractDetailContent({
   const [decision, setDecision] = useState<number>(ApprovalDecision.Approve)
   const [comment, setComment] = useState('')
   const [commentInput, setCommentInput] = useState('')
-  const [tab, setTab] = useState<Tab>('overview')
 
   const transition = useMutation({
     mutationFn: async () => {
@@ -122,76 +118,81 @@ export function ContractDetailContent({
         </div>
       </div>
 
-      {/* Tabs nav — Tổng quan / Chi tiết / Lịch sử */}
-      <nav className="flex gap-1 border-b border-slate-200">
-        <TabButton active={tab === 'overview'} onClick={() => setTab('overview')} icon={Info} label="Tổng quan" />
-        <TabButton active={tab === 'details'} onClick={() => setTab('details')} icon={ListChecks} label={`Chi tiết (${ContractTypeLabel[c.type] ?? ''})`} />
-        <TabButton active={tab === 'history'} onClick={() => setTab('history')} icon={History} label="Lịch sử" />
-      </nav>
+      {/* Tổng quan content — luôn hiển thị, không tabs */}
+      <section className="rounded-lg border border-slate-200 bg-white p-5">
+        <h2 className="mb-3 text-sm font-semibold text-slate-700">Thông tin HĐ</h2>
+        <dl className="grid grid-cols-2 gap-3 text-sm">
+          <div><dt className="text-slate-500">Loại</dt><dd>{ContractTypeLabel[c.type] ?? '—'}</dd></div>
+          <div><dt className="text-slate-500">Giá trị</dt><dd>{fmtMoney(c.giaTri)}</dd></div>
+          <div><dt className="text-slate-500">NCC</dt><dd>{c.supplierName}</dd></div>
+          <div><dt className="text-slate-500">Dự án</dt><dd>{c.projectName}</dd></div>
+          <div><dt className="text-slate-500">Phòng ban</dt><dd>{c.departmentName ?? '—'}</dd></div>
+          <div><dt className="text-slate-500">Người soạn</dt><dd>{c.drafterName ?? '—'}</dd></div>
+          <div className="col-span-2">
+            <dt className="text-slate-500 mb-1">SLA</dt>
+            <dd><SlaTimer deadline={c.slaDeadline} createdAt={c.createdAt} variant="full" /></dd>
+          </div>
+          <div><dt className="text-slate-500">Bypass CCM</dt><dd>{c.bypassProcurementAndCCM ? 'Có (HĐ Chủ đầu tư)' : 'Không'}</dd></div>
+        </dl>
+        {c.noiDung && (
+          <div className="mt-3">
+            <dt className="text-sm text-slate-500">Nội dung</dt>
+            <dd className="mt-1 whitespace-pre-wrap text-sm text-slate-700">{c.noiDung}</dd>
+          </div>
+        )}
+      </section>
 
-      {tab === 'overview' && (
-        <>
-          <section className="rounded-lg border border-slate-200 bg-white p-5">
-            <h2 className="mb-3 text-sm font-semibold text-slate-700">Thông tin HĐ</h2>
-            <dl className="grid grid-cols-2 gap-3 text-sm">
-              <div><dt className="text-slate-500">Loại</dt><dd>{ContractTypeLabel[c.type] ?? '—'}</dd></div>
-              <div><dt className="text-slate-500">Giá trị</dt><dd>{fmtMoney(c.giaTri)}</dd></div>
-              <div><dt className="text-slate-500">NCC</dt><dd>{c.supplierName}</dd></div>
-              <div><dt className="text-slate-500">Dự án</dt><dd>{c.projectName}</dd></div>
-              <div><dt className="text-slate-500">Phòng ban</dt><dd>{c.departmentName ?? '—'}</dd></div>
-              <div><dt className="text-slate-500">Người soạn</dt><dd>{c.drafterName ?? '—'}</dd></div>
-              <div className="col-span-2">
-                <dt className="text-slate-500 mb-1">SLA</dt>
-                <dd><SlaTimer deadline={c.slaDeadline} createdAt={c.createdAt} variant="full" /></dd>
+      <section className="rounded-lg border border-slate-200 bg-white p-5">
+        <h2 className="mb-3 flex items-center gap-2 text-sm font-semibold text-slate-700">
+          <MessageSquare className="h-4 w-4" />
+          Góp ý ({c.comments.length})
+        </h2>
+        <div className="space-y-3">
+          {c.comments.length === 0 && <div className="text-sm text-slate-400">Chưa có góp ý.</div>}
+          {c.comments.map(cm => (
+            <div key={cm.id} className="rounded-md border border-slate-100 p-3">
+              <div className="flex items-center justify-between text-xs text-slate-500">
+                <span className="font-medium text-slate-700">{cm.userName}</span>
+                <span>{fmt(cm.createdAt)} · {ContractPhaseLabel[cm.phase]}</span>
               </div>
-              <div><dt className="text-slate-500">Bypass CCM</dt><dd>{c.bypassProcurementAndCCM ? 'Có (HĐ Chủ đầu tư)' : 'Không'}</dd></div>
-            </dl>
-            {c.noiDung && (
-              <div className="mt-3">
-                <dt className="text-sm text-slate-500">Nội dung</dt>
-                <dd className="mt-1 whitespace-pre-wrap text-sm text-slate-700">{c.noiDung}</dd>
-              </div>
-            )}
-          </section>
-
-          <section className="rounded-lg border border-slate-200 bg-white p-5">
-            <h2 className="mb-3 flex items-center gap-2 text-sm font-semibold text-slate-700">
-              <MessageSquare className="h-4 w-4" />
-              Góp ý ({c.comments.length})
-            </h2>
-            <div className="space-y-3">
-              {c.comments.length === 0 && <div className="text-sm text-slate-400">Chưa có góp ý.</div>}
-              {c.comments.map(cm => (
-                <div key={cm.id} className="rounded-md border border-slate-100 p-3">
-                  <div className="flex items-center justify-between text-xs text-slate-500">
-                    <span className="font-medium text-slate-700">{cm.userName}</span>
-                    <span>{fmt(cm.createdAt)} · {ContractPhaseLabel[cm.phase]}</span>
-                  </div>
-                  <div className="mt-1 whitespace-pre-wrap text-sm text-slate-700">{cm.content}</div>
-                </div>
-              ))}
+              <div className="mt-1 whitespace-pre-wrap text-sm text-slate-700">{cm.content}</div>
             </div>
-            <form
-              className="mt-4 flex gap-2"
-              onSubmit={(e: FormEvent) => {
-                e.preventDefault()
-                if (!commentInput.trim()) return
-                addComment.mutate(commentInput.trim())
-              }}
-            >
-              <Textarea rows={2} placeholder="Thêm góp ý…" value={commentInput} onChange={e => setCommentInput(e.target.value)} />
-              <Button type="submit" disabled={addComment.isPending || !commentInput.trim()}>
-                Gửi
-              </Button>
-            </form>
-          </section>
+          ))}
+        </div>
+        <form
+          className="mt-4 flex gap-2"
+          onSubmit={(e: FormEvent) => {
+            e.preventDefault()
+            if (!commentInput.trim()) return
+            addComment.mutate(commentInput.trim())
+          }}
+        >
+          <Textarea rows={2} placeholder="Thêm góp ý…" value={commentInput} onChange={e => setCommentInput(e.target.value)} />
+          <Button type="submit" disabled={addComment.isPending || !commentInput.trim()}>
+            Gửi
+          </Button>
+        </form>
+      </section>
 
-          <ContractAttachmentsSection contractId={c.id} attachments={c.attachments} />
-        </>
-      )}
+      <ContractAttachmentsSection contractId={c.id} attachments={c.attachments} />
 
-      {tab === 'details' && <ContractDetailsTab contract={c} />}
-      {tab === 'history' && <ContractChangelogsTab contractId={c.id} />}
+      {/* Chi tiết + Lịch sử điều chỉnh — 7/3 grid bên dưới */}
+      <div className="grid grid-cols-1 gap-4 lg:grid-cols-10">
+        <section className="rounded-lg border border-slate-200 bg-white p-5 lg:col-span-7">
+          <h2 className="mb-3 flex items-center gap-2 text-sm font-semibold text-slate-700">
+            <ListChecks className="h-4 w-4" />
+            Chi tiết ({ContractTypeLabel[c.type] ?? '—'})
+          </h2>
+          <ContractDetailsTab contract={c} />
+        </section>
+        <section className="rounded-lg border border-slate-200 bg-white p-5 lg:col-span-3">
+          <h2 className="mb-3 flex items-center gap-2 text-sm font-semibold text-slate-700">
+            <History className="h-4 w-4" />
+            Lịch sử điều chỉnh
+          </h2>
+          <ContractChangelogsTab contractId={c.id} />
+        </section>
+      </div>
 
       <Dialog
         open={actionOpen}
@@ -225,26 +226,3 @@ export function ContractDetailContent({
   )
 }
 
-function TabButton({
-  active, onClick, icon: Icon, label,
-}: {
-  active: boolean
-  onClick: () => void
-  icon: React.ComponentType<{ className?: string }>
-  label: string
-}) {
-  return (
-    <button
-      onClick={onClick}
-      className={cn(
-        '-mb-px flex items-center gap-1.5 border-b-2 px-3 py-2 text-sm transition',
-        active
-          ? 'border-brand-600 font-semibold text-brand-700'
-          : 'border-transparent text-slate-500 hover:text-slate-700',
-      )}
-    >
-      <Icon className="h-4 w-4" />
-      {label}
-    </button>
-  )
-}