feat: 版本详情完整功能 + 数据串联 + 登录模块

- 版本详情：关联需求Tab（从需求池添加已采纳需求/移除释放）
- 版本详情：调研/产品方案/UI设计Tab（计划CRUD、完成提交成果、耗时统计）
- 版本详情：超期校验（结束日期超版本截止需填写原因）
- 版本详情：概览统计卡片（加班时长/排名/原因占比）
- 数据串联：产品→项目→版本→需求→加班全链路贯通
- 版本管理：规划中版本可删除，删除释放关联需求
- 数据清理：仅保留翻台宝/值班，需求池10条值班待评审需求
- 修复：列表页overflow裁剪菜单问题（4个页面统一修复）
- 新增：登录模块、AuthGuard、VersionPlan store

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

apps/web/components/version/PlanTab.tsx

@@ -0,0 +1,311 @@
+'use client';
+
+import { useState } from 'react';
+import { Plus, Pencil, Trash2, X, Check, ExternalLink, FileUp, Link2 } from 'lucide-react';
+import type { VersionPlan } from '@/lib/version-plan';
+import { calcPlanDuration, formatDuration, calcTotalDuration } from '@/lib/version-plan';
+
+interface Props {
+  plans: VersionPlan[];
+  versionId: string;
+  versionDeadline?: string;
+  currentUserName: string;
+  planType: 'research' | 'product' | 'ui';
+  linkedRequirements?: { id: string; title: string; code: string; productOwner?: string }[];
+  onCreate: (data: Omit<VersionPlan, 'id' | 'createdAt'>) => void;
+  onUpdate: (id: string, data: Partial<VersionPlan>) => void;
+  onComplete: (id: string, result: { resultType: 'link' | 'file'; resultUrl?: string; resultFileName?: string; resultFileData?: string }) => void;
+  onDelete: (id: string) => void;
+}
+
+const TYPE_LABEL = { research: '调研', product: '产品方案', ui: 'UI设计' };
+const STATUS_STYLE = {
+  pending: 'bg-zinc-100 text-zinc-600',
+  in_progress: 'bg-blue-50 text-blue-600 border-blue-200',
+  completed: 'bg-green-50 text-green-700 border-green-200',
+};
+const STATUS_LABEL = { pending: '未开始', in_progress: '进行中', completed: '已完成' };
+
+export function PlanTab({ plans, versionId, versionDeadline, currentUserName, planType, linkedRequirements, onCreate, onUpdate, onComplete, onDelete }: Props) {
+  const [showCreateModal, setShowCreateModal] = useState(false);
+  const [editingPlan, setEditingPlan] = useState<VersionPlan | null>(null);
+  const [completingPlan, setCompletingPlan] = useState<VersionPlan | null>(null);
+
+  const typePlans = plans.filter((p) => p.versionId === versionId && p.type === planType);
+  const totalDuration = calcTotalDuration(typePlans);
+
+  return (
+    <div className="space-y-4">
+      <div className="flex items-center justify-between">
+        <div className="flex items-center gap-3">
+          <span className="text-[12px] text-[var(--ink-muted)]">{typePlans.length} 个{TYPE_LABEL[planType]}计划</span>
+          <span className="text-[12px] text-[var(--ink-soft)]">总耗时：<span className="font-medium text-[var(--ink)]">{totalDuration}</span></span>
+          {versionDeadline && <span className="text-[12px] text-[var(--ink-muted)]">版本截止：<span className="font-medium text-red-500">{versionDeadline}</span></span>}
+        </div>
+        <button onClick={() => setShowCreateModal(true)} className="flex h-8 items-center gap-1.5 rounded-lg bg-[var(--accent)] px-3 text-[13px] font-medium text-white shadow-[var(--shadow-sm)] hover:bg-[var(--accent-hover)] transition-colors">
+          <Plus className="h-3.5 w-3.5" strokeWidth={2} />
+          新建计划
+        </button>
+      </div>
+
+      {typePlans.length === 0 ? (
+        <div className="rounded-xl border border-[var(--line)] bg-[var(--bg-card)] p-12 text-center text-[13px] text-[var(--ink-muted)]">
+          暂无{TYPE_LABEL[planType]}计划
+        </div>
+      ) : (
+        <div className="space-y-3">
+          {typePlans.map((plan) => {
+            const dur = plan.completedAt
+              ? calcPlanDuration(plan.startTime, plan.completedAt)
+              : calcPlanDuration(plan.startTime, plan.endTime);
+            const durText = formatDuration(dur.days, dur.hours);
+            return (
+              <div key={plan.id} className="rounded-xl border border-[var(--line)] bg-[var(--bg-card)] p-4">
+                <div className="flex items-start justify-between">
+                  <div className="flex-1">
+                    <div className="flex items-center gap-2 mb-1.5">
+                      <span className="text-[13px] font-medium text-[var(--ink)]">{plan.title}</span>
+                      <span className={`inline-flex items-center rounded-md px-2 py-0.5 text-[10px] font-medium border ${STATUS_STYLE[plan.status]}`}>
+                        {STATUS_LABEL[plan.status]}
+                      </span>
+                    </div>
+                    <div className="flex items-center gap-4 text-[12px] text-[var(--ink-soft)]">
+                      <span>负责人：{plan.owner}</span>
+                      <span>计划：{plan.startTime.slice(0, 10)} → {plan.endTime.slice(0, 10)}</span>
+                      {plan.completedAt && <span className="text-green-600">完成：{plan.completedAt.slice(0, 10)}</span>}
+                      <span className="font-medium text-[var(--ink)]">耗时 {durText}</span>
+                    </div>
+                    {plan.overdueReason && (
+                      <div className="mt-1.5 text-[11px] text-red-600 bg-red-50 rounded px-2 py-1 inline-block">超期原因：{plan.overdueReason}</div>
+                    )}
+                    {plan.linkedRequirementIds && plan.linkedRequirementIds.length > 0 && linkedRequirements && (
+                      <div className="flex flex-wrap gap-1.5 mt-2">
+                        {plan.linkedRequirementIds.map((rid) => {
+                          const req = linkedRequirements.find((r) => r.id === rid);
+                          return req ? (
+                            <span key={rid} className="inline-flex items-center gap-1 rounded bg-[var(--bg-subtle)] px-2 py-0.5 text-[11px] text-[var(--ink-soft)]">
+                              {req.code} {req.title.slice(0, 12)}{req.title.length > 12 ? '...' : ''}
+                              {req.productOwner && <span className="text-[var(--ink-muted)]">({req.productOwner})</span>}
+                            </span>
+                          ) : null;
+                        })}
+                      </div>
+                    )}
+                    {plan.status === 'completed' && plan.resultUrl && (
+                      <div className="flex items-center gap-1.5 mt-2">
+                        {plan.resultType === 'link' ? <Link2 className="h-3 w-3 text-[var(--accent)]" /> : <FileUp className="h-3 w-3 text-[var(--accent)]" />}
+                        <a href={plan.resultUrl} target="_blank" rel="noopener noreferrer" className="text-[12px] text-[var(--accent)] hover:underline flex items-center gap-1">
+                          {plan.resultFileName || '查看成果'}<ExternalLink className="h-3 w-3" />
+                        </a>
+                      </div>
+                    )}
+                  </div>
+                  <div className="flex items-center gap-1 ml-3">
+                    {plan.status !== 'completed' && (
+                      <>
+                        <button onClick={() => setCompletingPlan(plan)} className="h-7 w-7 flex items-center justify-center rounded-md text-green-600 hover:bg-green-50" title="标记完成">
+                          <Check className="h-3.5 w-3.5" />
+                        </button>
+                        <button onClick={() => setEditingPlan(plan)} className="h-7 w-7 flex items-center justify-center rounded-md text-[var(--ink-muted)] hover:bg-[var(--bg-subtle)]" title="编辑">
+                          <Pencil className="h-3.5 w-3.5" />
+                        </button>
+                        <button onClick={() => onDelete(plan.id)} className="h-7 w-7 flex items-center justify-center rounded-md text-red-500 hover:bg-red-50" title="删除">
+                          <Trash2 className="h-3.5 w-3.5" />
+                        </button>
+                      </>
+                    )}
+                  </div>
+                </div>
+              </div>
+            );
+          })}
+        </div>
+      )}
+
+      {(showCreateModal || editingPlan) && (
+        <PlanFormModal
+          initial={editingPlan}
+          planType={planType}
+          versionId={versionId}
+          versionDeadline={versionDeadline}
+          currentUserName={currentUserName}
+          linkedRequirements={linkedRequirements}
+          onClose={() => { setShowCreateModal(false); setEditingPlan(null); }}
+          onSubmit={(data) => {
+            if (editingPlan) onUpdate(editingPlan.id, data);
+            else onCreate(data as any);
+            setShowCreateModal(false);
+            setEditingPlan(null);
+          }}
+        />
+      )}
+
+      {completingPlan && (
+        <CompleteModal
+          onClose={() => setCompletingPlan(null)}
+          onSubmit={(result) => { onComplete(completingPlan.id, result); setCompletingPlan(null); }}
+        />
+      )}
+    </div>
+  );
+}
+
+function PlanFormModal({ initial, planType, versionId, versionDeadline, currentUserName, linkedRequirements, onClose, onSubmit }: {
+  initial: VersionPlan | null;
+  planType: 'research' | 'product' | 'ui';
+  versionId: string;
+  versionDeadline?: string;
+  currentUserName: string;
+  linkedRequirements?: { id: string; title: string; code: string }[];
+  onClose: () => void;
+  onSubmit: (data: any) => void;
+}) {
+  const now = new Date().toISOString().slice(0, 10);
+  const [title, setTitle] = useState(initial?.title ?? '');
+  const [owner] = useState(initial?.owner ?? currentUserName);
+  const [startTime, setStartTime] = useState(initial?.startTime?.slice(0, 10) ?? now);
+  const [endTime, setEndTime] = useState(initial?.endTime?.slice(0, 10) ?? '');
+  const [remark, setRemark] = useState(initial?.remark ?? '');
+  const [overdueReason, setOverdueReason] = useState(initial?.overdueReason ?? '');
+  const [selectedReqs, setSelectedReqs] = useState<Set<string>>(new Set(initial?.linkedRequirementIds ?? []));
+  const showReqSelect = planType === 'product' || planType === 'ui';
+  const isOverdue = !!(versionDeadline && endTime && new Date(endTime) > new Date(versionDeadline));
+
+  const handleSubmit = (e: React.FormEvent) => {
+    e.preventDefault();
+    if (!title.trim() || !endTime) return;
+    if (isOverdue && !overdueReason.trim()) return;
+    onSubmit({
+      versionId,
+      type: planType,
+      title: title.trim(),
+      owner: owner.trim() || currentUserName,
+      startTime,
+      endTime,
+      status: initial?.status ?? 'pending',
+      linkedRequirementIds: showReqSelect ? Array.from(selectedReqs) : undefined,
+      remark: remark.trim() || undefined,
+      overdueReason: isOverdue ? overdueReason.trim() : undefined,
+      addedBy: currentUserName,
+    });
+  };
+
+  return (
+    <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/40" onClick={onClose}>
+      <div className="w-full max-w-md rounded-2xl bg-[var(--bg-card)] border border-[var(--line)] p-5 shadow-[var(--shadow-md)]" onClick={(e) => e.stopPropagation()}>
+        <div className="flex items-center justify-between mb-4">
+          <h3 className="text-[13px] font-semibold text-[var(--ink)]">{initial ? '编辑' : '新建'}{TYPE_LABEL[planType]}计划</h3>
+          <button onClick={onClose} className="p-1 rounded hover:bg-[var(--bg-subtle)] text-[var(--ink-muted)]"><X className="h-4 w-4" /></button>
+        </div>
+        <form onSubmit={handleSubmit} className="space-y-3">
+          <div>
+            <label className="text-[12px] font-medium text-[var(--ink-soft)] mb-1 block">标题</label>
+            <input value={title} onChange={(e) => setTitle(e.target.value)} required className="h-9 w-full rounded-lg border border-[var(--line)] bg-[var(--bg-card)] px-3 text-[13px] focus:border-[var(--accent)] focus:outline-none" />
+          </div>
+          <div>
+            <label className="text-[12px] font-medium text-[var(--ink-soft)] mb-1 block">负责人</label>
+            <input value={owner} readOnly className="h-9 w-full rounded-lg border border-[var(--line)] bg-[var(--bg-subtle)] px-3 text-[13px] text-[var(--ink-muted)] cursor-not-allowed" />
+          </div>
+          <div className="grid grid-cols-2 gap-3">
+            <div>
+              <label className="text-[12px] font-medium text-[var(--ink-soft)] mb-1 block">开始日期</label>
+              <input type="date" value={startTime} onChange={(e) => setStartTime(e.target.value)} className="h-9 w-full rounded-lg border border-[var(--line)] bg-[var(--bg-card)] px-3 text-[13px] focus:border-[var(--accent)] focus:outline-none" />
+            </div>
+            <div>
+              <label className="text-[12px] font-medium text-[var(--ink-soft)] mb-1 block">结束日期</label>
+              <input type="date" value={endTime} onChange={(e) => setEndTime(e.target.value)} required className="h-9 w-full rounded-lg border border-[var(--line)] bg-[var(--bg-card)] px-3 text-[13px] focus:border-[var(--accent)] focus:outline-none" />
+            </div>
+          </div>
+          {versionDeadline && (
+            <div className="text-[11px] text-[var(--ink-muted)] -mt-1">版本截止日期：<span className="text-red-500 font-medium">{versionDeadline}</span></div>
+          )}
+          {isOverdue && (
+            <div className="rounded-lg bg-red-50 border border-red-200 p-3 space-y-2">
+              <div className="text-[12px] text-red-700 font-medium">⚠ 结束日期超出版本截止日期，请说明原因</div>
+              <textarea
+                value={overdueReason}
+                onChange={(e) => setOverdueReason(e.target.value)}
+                rows={2}
+                placeholder="例如：技术难点超预期、上游交付延误..."
+                required
+                className="w-full rounded-lg border border-red-200 bg-white px-3 py-2 text-[13px] focus:border-red-400 focus:outline-none resize-none"
+              />
+            </div>
+          )}
+          {showReqSelect && linkedRequirements && linkedRequirements.length > 0 && (
+            <div>
+              <label className="text-[12px] font-medium text-[var(--ink-soft)] mb-1.5 block">关联需求</label>
+              <div className="max-h-[120px] overflow-y-auto rounded-lg border border-[var(--line)] p-2 space-y-1">
+                {linkedRequirements.map((req) => (
+                  <label key={req.id} className="flex items-center gap-2 rounded px-2 py-1 hover:bg-[var(--bg-subtle)] cursor-pointer text-[12px]">
+                    <input type="checkbox" checked={selectedReqs.has(req.id)} onChange={() => { const s = new Set(selectedReqs); if (s.has(req.id)) s.delete(req.id); else s.add(req.id); setSelectedReqs(s); }} className="h-3.5 w-3.5 rounded" />
+                    <span className="text-[var(--ink-muted)] font-mono">{req.code}</span>
+                    <span className="text-[var(--ink)] truncate">{req.title}</span>
+                  </label>
+                ))}
+              </div>
+            </div>
+          )}
+          <div>
+            <label className="text-[12px] font-medium text-[var(--ink-soft)] mb-1 block">备注</label>
+            <textarea value={remark} onChange={(e) => setRemark(e.target.value)} rows={2} className="w-full rounded-lg border border-[var(--line)] bg-[var(--bg-card)] px-3 py-2 text-[13px] focus:border-[var(--accent)] focus:outline-none resize-none" />
+          </div>
+          <div className="flex justify-end gap-2 pt-2">
+            <button type="button" onClick={onClose} className="h-8 px-3 rounded-lg text-[12px] font-medium border border-[var(--line)] text-[var(--ink-soft)] hover:bg-[var(--bg-subtle)]">取消</button>
+            <button type="submit" className="h-8 px-4 rounded-lg text-[12px] font-medium bg-[var(--accent)] text-white hover:bg-[var(--accent-hover)]">{initial ? '保存' : '创建'}</button>
+          </div>
+        </form>
+      </div>
+    </div>
+  );
+}
+
+function CompleteModal({ onClose, onSubmit }: {
+  onClose: () => void;
+  onSubmit: (result: { resultType: 'link' | 'file'; resultUrl?: string; resultFileName?: string; resultFileData?: string }) => void;
+}) {
+  const [resultType, setResultType] = useState<'link' | 'file'>('link');
+  const [url, setUrl] = useState('');
+  const [fileName, setFileName] = useState('');
+  const [fileData, setFileData] = useState('');
+
+  const handleFile = (e: React.ChangeEvent<HTMLInputElement>) => {
+    const file = e.target.files?.[0];
+    if (!file) return;
+    setFileName(file.name);
+    const reader = new FileReader();
+    reader.onload = () => setFileData(reader.result as string);
+    reader.readAsDataURL(file);
+  };
+
+  const canSubmit = resultType === 'link' ? url.trim().length > 0 : fileData.length > 0;
+
+  return (
+    <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/40" onClick={onClose}>
+      <div className="w-full max-w-sm rounded-2xl bg-[var(--bg-card)] border border-[var(--line)] p-5 shadow-[var(--shadow-md)]" onClick={(e) => e.stopPropagation()}>
+        <div className="flex items-center justify-between mb-4">
+          <h3 className="text-[13px] font-semibold text-[var(--ink)]">提交成果</h3>
+          <button onClick={onClose} className="p-1 rounded hover:bg-[var(--bg-subtle)] text-[var(--ink-muted)]"><X className="h-4 w-4" /></button>
+        </div>
+        <div className="space-y-3">
+          <div className="flex gap-2">
+            <button type="button" onClick={() => setResultType('link')} className={`h-8 px-3 rounded-lg text-[12px] font-medium border transition-colors ${resultType === 'link' ? 'border-[var(--accent)] bg-[var(--accent-soft)] text-[var(--accent)]' : 'border-[var(--line)] text-[var(--ink-soft)]'}`}>链接</button>
+            <button type="button" onClick={() => setResultType('file')} className={`h-8 px-3 rounded-lg text-[12px] font-medium border transition-colors ${resultType === 'file' ? 'border-[var(--accent)] bg-[var(--accent-soft)] text-[var(--accent)]' : 'border-[var(--line)] text-[var(--ink-soft)]'}`}>文件</button>
+          </div>
+          {resultType === 'link' ? (
+            <input value={url} onChange={(e) => setUrl(e.target.value)} placeholder="https://..." className="h-9 w-full rounded-lg border border-[var(--line)] bg-[var(--bg-card)] px-3 text-[13px] focus:border-[var(--accent)] focus:outline-none" />
+          ) : (
+            <div>
+              <input type="file" onChange={handleFile} className="text-[12px] text-[var(--ink-soft)]" />
+              {fileName && <p className="text-[11px] text-[var(--ink-muted)] mt-1">已选：{fileName}</p>}
+            </div>
+          )}
+          <div className="flex justify-end gap-2 pt-2">
+            <button onClick={onClose} className="h-8 px-3 rounded-lg text-[12px] font-medium border border-[var(--line)] text-[var(--ink-soft)] hover:bg-[var(--bg-subtle)]">取消</button>
+            <button onClick={() => onSubmit({ resultType, resultUrl: resultType === 'link' ? url.trim() : fileData, resultFileName: fileName || undefined, resultFileData: resultType === 'file' ? fileData : undefined })} disabled={!canSubmit} className="h-8 px-4 rounded-lg text-[12px] font-medium bg-[var(--accent)] text-white hover:bg-[var(--accent-hover)] disabled:opacity-50">确认</button>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}

apps/web/components/version/VersionRequirementsTab.tsx

@@ -0,0 +1,138 @@
+'use client';
+
+import { useState } from 'react';
+import { Plus, X, Search } from 'lucide-react';
+import type { Requirement } from '@/lib/requirement';
+import { REQ_STATUS_LABEL, REQ_STATUS_COLOR } from '@/lib/requirement';
+
+interface Props {
+  versionId: string;
+  projectId: string;
+  requirements: Requirement[];
+  onLink: (reqIds: string[], addedBy: string) => void;
+  onUnlink: (reqId: string) => void;
+  currentUserName: string;
+}
+
+export function VersionRequirementsTab({ versionId, projectId, requirements, onLink, onUnlink, currentUserName }: Props) {
+  const [showAddModal, setShowAddModal] = useState(false);
+  const linkedReqs = requirements.filter((r) => r.versionId === versionId);
+  const availableReqs = requirements.filter((r) => r.projectId === projectId && !r.versionId && r.status === 'adopted');
+
+  return (
+    <div className="space-y-4">
+      <div className="flex items-center justify-between">
+        <span className="text-[12px] text-[var(--ink-muted)]">{linkedReqs.length} 条关联需求</span>
+        <button onClick={() => setShowAddModal(true)} className="flex h-8 items-center gap-1.5 rounded-lg bg-[var(--accent)] px-3 text-[13px] font-medium text-white shadow-[var(--shadow-sm)] hover:bg-[var(--accent-hover)] transition-colors">
+          <Plus className="h-3.5 w-3.5" strokeWidth={2} />
+          添加需求
+        </button>
+      </div>
+
+      {linkedReqs.length === 0 ? (
+        <div className="rounded-xl border border-[var(--line)] bg-[var(--bg-card)] p-12 text-center text-[13px] text-[var(--ink-muted)]">
+          暂无关联需求，从需求池中添加
+        </div>
+      ) : (
+        <div className="rounded-xl border border-[var(--line)] bg-[var(--bg-card)] overflow-hidden">
+          <table className="w-full text-left text-[13px]">
+            <thead className="sticky top-0 z-10 bg-[var(--bg-subtle)]">
+              <tr className="border-b border-[var(--line)]">
+                <th className="px-4 py-2.5 text-[11px] font-medium uppercase tracking-wide text-[var(--ink-muted)]">编号</th>
+                <th className="px-4 py-2.5 text-[11px] font-medium uppercase tracking-wide text-[var(--ink-muted)]">需求概述</th>
+                <th className="px-4 py-2.5 text-[11px] font-medium uppercase tracking-wide text-[var(--ink-muted)]">描述</th>
+                <th className="px-4 py-2.5 text-[11px] font-medium uppercase tracking-wide text-[var(--ink-muted)]">状态</th>
+                <th className="px-4 py-2.5 text-[11px] font-medium uppercase tracking-wide text-[var(--ink-muted)]">添加人</th>
+                <th className="px-4 py-2.5 text-[11px] font-medium uppercase tracking-wide text-[var(--ink-muted)] text-right">操作</th>
+              </tr>
+            </thead>
+            <tbody>
+              {linkedReqs.map((req) => (
+                <tr key={req.id} className="border-b border-[var(--line-soft)] last:border-0 hover:bg-[var(--bg-subtle)] transition-colors">
+                  <td className="px-4 py-3 font-mono text-[12px] text-[var(--ink-muted)]">{req.code}</td>
+                  <td className="px-4 py-3 font-medium text-[var(--ink)]">{req.title}</td>
+                  <td className="px-4 py-3 text-[12px] text-[var(--ink-soft)] max-w-[200px] truncate">{req.description || '-'}</td>
+                  <td className="px-4 py-3">
+                    <span className={`inline-flex items-center rounded-md px-2 py-0.5 text-[10px] font-medium border ${REQ_STATUS_COLOR[req.status]}`}>
+                      {REQ_STATUS_LABEL[req.status]}
+                    </span>
+                  </td>
+                  <td className="px-4 py-3 text-[12px] text-[var(--ink-soft)]">{req.addedToVersionBy || '-'}</td>
+                  <td className="px-4 py-3 text-right">
+                    <button onClick={() => onUnlink(req.id)} className="h-6 px-2 rounded text-[11px] font-medium text-red-500 hover:bg-red-50 transition-colors">移除</button>
+                  </td>
+                </tr>
+              ))}
+            </tbody>
+          </table>
+        </div>
+      )}
+
+      {showAddModal && (
+        <AddRequirementModal
+          available={availableReqs}
+          onClose={() => setShowAddModal(false)}
+          onConfirm={(ids) => { onLink(ids, currentUserName); setShowAddModal(false); }}
+        />
+      )}
+    </div>
+  );
+}
+
+function AddRequirementModal({ available, onClose, onConfirm }: {
+  available: Requirement[];
+  onClose: () => void;
+  onConfirm: (ids: string[]) => void;
+}) {
+  const [selected, setSelected] = useState<Set<string>>(new Set());
+  const [search, setSearch] = useState('');
+
+  const filtered = available.filter((r) =>
+    r.title.includes(search) || r.code.includes(search)
+  );
+
+  const toggle = (id: string) => {
+    const next = new Set(selected);
+    if (next.has(id)) next.delete(id); else next.add(id);
+    setSelected(next);
+  };
+
+  return (
+    <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/40" onClick={onClose}>
+      <div className="w-full max-w-lg rounded-2xl bg-[var(--bg-card)] border border-[var(--line)] shadow-[var(--shadow-md)] flex flex-col max-h-[70vh]" onClick={(e) => e.stopPropagation()}>
+        <div className="flex items-center justify-between px-5 py-4 border-b border-[var(--line)]">
+          <h3 className="text-[13px] font-semibold text-[var(--ink)]">从需求池添加</h3>
+          <button onClick={onClose} className="p-1 rounded hover:bg-[var(--bg-subtle)] text-[var(--ink-muted)]"><X className="h-4 w-4" /></button>
+        </div>
+        <div className="px-5 py-3 border-b border-[var(--line)]">
+          <div className="relative">
+            <Search className="absolute left-3 top-1/2 -translate-y-1/2 h-3.5 w-3.5 text-[var(--ink-muted)]" />
+            <input value={search} onChange={(e) => setSearch(e.target.value)} placeholder="搜索需求编号或标题" className="h-8 w-full rounded-lg border border-[var(--line)] bg-[var(--bg)] pl-9 pr-3 text-[12px] focus:border-[var(--accent)] focus:outline-none" />
+          </div>
+        </div>
+        <div className="flex-1 overflow-y-auto px-5 py-3">
+          {filtered.length === 0 ? (
+            <p className="text-center text-[12px] text-[var(--ink-muted)] py-8">没有可添加的需求</p>
+          ) : (
+            <div className="space-y-1.5">
+              {filtered.map((req) => (
+                <label key={req.id} className="flex items-center gap-3 rounded-lg px-3 py-2 hover:bg-[var(--bg-subtle)] cursor-pointer">
+                  <input type="checkbox" checked={selected.has(req.id)} onChange={() => toggle(req.id)} className="h-4 w-4 rounded border-[var(--line)] text-[var(--accent)]" />
+                  <span className="text-[11px] font-mono text-[var(--ink-muted)] shrink-0">{req.code}</span>
+                  <span className="text-[12px] text-[var(--ink)] flex-1 truncate">{req.title}</span>
+                </label>
+              ))}
+            </div>
+          )}
+        </div>
+        <div className="flex items-center justify-between px-5 py-4 border-t border-[var(--line)]">
+          <span className="text-[11px] text-[var(--ink-muted)]">已选 {selected.size} 条</span>
+          <div className="flex gap-2">
+            <button onClick={onClose} className="h-8 px-3 rounded-lg text-[12px] font-medium border border-[var(--line)] text-[var(--ink-soft)] hover:bg-[var(--bg-subtle)]">取消</button>
+            <button onClick={() => onConfirm(Array.from(selected))} disabled={selected.size === 0} className="h-8 px-4 rounded-lg text-[12px] font-medium bg-[var(--accent)] text-white hover:bg-[var(--accent-hover)] disabled:opacity-50">确认添加</button>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}