perf: facets 服务端缓存 + loadMonths 查询优化 + 首页去重复卡片

- facets API 增加内存缓存（TTL 5 分钟，键=角色+部门+筛选参数，容量 200 条）
- loadMonths 从 findMany 全表扫描改为 groupBy 按月聚合（数据库侧完成）
- 首页移除下方白卡区块（与编号索引重复）+ 恢复 05-07 规划中板块行

app/api/materials/facets/route.ts

@@ -78,6 +78,40 @@ function toMaterialTypeItems(rows: any[]) {
   }))
 }
 
+// ===== 服务端内存缓存 =====
+// facets 的 7 条 SQL 在大库上可耗时 20 秒以上（尤其 loadMonths 的全表扫描）。
+// 相同权限上下文 + 相同筛选参数的结果在 TTL 内直接返回缓存。
+const FACETS_CACHE_TTL_MS = 5 * 60 * 1000 // 5 分钟
+const facetsCache = new Map<string, { data: any; expiresAt: number }>()
+
+function buildFacetsCacheKey(searchParams: URLSearchParams, user: any): string {
+  // 以角色+部门+筛选参数为缓存键：同权限的人共享同一份结果
+  const role = String(user?.role || 'USER')
+  const dept = String(user?.department || '')
+  const managed = String(user?.managedDepartment || '')
+  const filterKey = searchParams.toString()
+  return `${role}|${dept}|${managed}|${filterKey}`
+}
+
+function getFacetsFromCache(key: string): any | null {
+  const entry = facetsCache.get(key)
+  if (!entry) return null
+  if (Date.now() > entry.expiresAt) {
+    facetsCache.delete(key)
+    return null
+  }
+  return entry.data
+}
+
+function setFacetsCache(key: string, data: any) {
+  // 简单容量上限：最多保留 200 个不同筛选组合的缓存
+  if (facetsCache.size > 200) {
+    const oldest = facetsCache.keys().next().value
+    if (oldest) facetsCache.delete(oldest)
+  }
+  facetsCache.set(key, { data, expiresAt: Date.now() + FACETS_CACHE_TTL_MS })
+}
+
 export async function GET(request: NextRequest) {
   try {
     const session = await getServerSession(authOptions)
@@ -90,6 +124,14 @@ export async function GET(request: NextRequest) {
 
     const searchParams = request.nextUrl.searchParams
     const user = session.user as any
+
+    // 缓存命中：直接返回，跳过全部 7 条 SQL
+    const cacheKey = buildFacetsCacheKey(searchParams, user)
+    const cached = getFacetsFromCache(cacheKey)
+    if (cached) {
+      return NextResponse.json(cached)
+    }
+
     const context = await createMaterialQueryContext(searchParams, user)
 
     const buildWhere = async (exclude?: MaterialFilterDimension) =>
@@ -148,15 +190,36 @@ export async function GET(request: NextRequest) {
         return { items: [], total: 0 }
       }
 
-      const rows = await prisma.material.findMany({
+      // 用 groupBy 替代 findMany 全表扫描：只取按月聚合的计数，不拉全量 createdAt 行
+      const rows = await (prisma.material.groupBy as any)({
+        by: ['createdAt'],
         where: result.where,
-        select: { createdAt: true },
-        orderBy: { createdAt: 'desc' },
+        _count: { _all: true },
       })
 
+      // groupBy 返回去重后的 createdAt 及其计数，汇总为月度计数
+      const monthMap = new Map<string, number>()
+      let total = 0
+      for (const row of rows) {
+        const date = new Date(row.createdAt)
+        const value = `${date.getFullYear()}-${String(date.getMonth() + 1).padStart(2, '0')}`
+        const count = Number(row._count?._all || 0)
+        monthMap.set(value, (monthMap.get(value) || 0) + count)
+        total += count
+      }
+
       return {
-        items: toMonthItems(rows),
-        total: rows.length,
+        items: Array.from(monthMap.entries())
+          .map(([value, count]) => {
+            const [, month] = value.split('-')
+            return {
+              value,
+              label: `${value.slice(0, 4)}年${Number.parseInt(month, 10)}月`,
+              count,
+            }
+          })
+          .sort((a, b) => b.value.localeCompare(a.value)),
+        total,
       }
     }
 
@@ -174,7 +237,7 @@ export async function GET(request: NextRequest) {
     ])
     const materialTypeResult = await loadMaterialTypes()
 
-    return NextResponse.json({
+    const responseData = {
       total,
       categories: categoryResult.items,
       scenes: sceneResult.items,
@@ -190,7 +253,12 @@ export async function GET(request: NextRequest) {
         productCategory: productCategoryResult.total,
         month: monthResult.total,
       },
-    })
+    }
+
+    // 写入缓存，供同权限用户在 TTL 内复用
+    setFacetsCache(cacheKey, responseData)
+
+    return NextResponse.json(responseData)
   } catch (error) {
     if (error instanceof MaterialQueryError) {
       return NextResponse.json(

app/page.tsx

@@ -147,7 +147,6 @@ export default function BoardHomePage() {
       !pageRef.current?.querySelector('[data-hero-title]') ||
       !pageRef.current.querySelector('[data-row-line]') ||
       !pageRef.current.querySelector('[data-row]') ||
-      !pageRef.current.querySelector('[data-card]') ||
       !pageRef.current.querySelector('[data-foot]')
     ) {
       return
@@ -190,20 +189,6 @@ export default function BoardHomePage() {
           { y: 0, autoAlpha: 1, duration: 0.55, stagger: 0.07, clearProps: 'opacity,visibility,transform' },
           '-=0.5',
         )
-        // 白卡：虚焦落位（与标题同语言）
-        .fromTo(
-          '[data-card]',
-          { y: 20, autoAlpha: 0, filter: 'blur(8px)' },
-          {
-            y: 0,
-            autoAlpha: 1,
-            filter: 'blur(0px)',
-            duration: 0.75,
-            stagger: 0.12,
-            clearProps: 'opacity,visibility,transform,filter',
-          },
-          '-=0.4',
-        )
         .fromTo(
           '[data-foot]',
           { autoAlpha: 0 },
@@ -326,103 +311,6 @@ export default function BoardHomePage() {
           </section>
         )}
 
-        {/* ===== 已上线板块的入口白卡 ===== */}
-        {sessionLoading ? (
-          <div className="grid gap-6 py-16 md:grid-cols-12 md:gap-8 md:py-24">
-            {Array.from({ length: 4 }).map((_, i) => (
-              <div
-                key={i}
-                className={`h-[260px] animate-pulse rounded-xl border border-[#e7e8ea] bg-white/60 ${i % 2 === 0 ? 'md:col-span-7' : 'md:col-span-5'}`}
-              />
-            ))}
-          </div>
-        ) : (
-          <section className="grid gap-6 py-16 md:grid-cols-12 md:gap-8 md:py-24">
-            <div data-card className="rounded-xl border border-[#e7e8ea] bg-white p-8 transition-all duration-[400ms] ease-[cubic-bezier(0.22,1,0.36,1)] hover:-translate-y-1.5 hover:border-[#c9ccd1] md:col-span-7 md:p-10">
-              <div className="flex items-center gap-2.5">
-                <StatusDot tone="live" />
-                <span className="text-[12px] text-[#6b7075]">运行中</span>
-                <span className={`font-en ml-auto text-[11px] uppercase tracking-[0.14em] ${labelCls}`}>01 / Assets</span>
-              </div>
-              <h3 className="mt-5 text-[22px] font-semibold tracking-tight">创意资产库</h3>
-              <p className="mt-3 text-[14px] leading-relaxed text-[#6b7075]">
-                素材浏览、上传、分享与下载——创意资产的全部日常都在这里。
-              </p>
-              <div className="mt-7">
-                <Link
-                  href="/materials"
-                  className={`inline-flex min-h-11 items-center rounded-lg bg-[#1a1c1d] px-6 text-[13px] font-medium text-white transition-all duration-200 hover:opacity-80 active:scale-[0.98] ${focusRing}`}
-                >
-                  进入创意资产库
-                </Link>
-              </div>
-            </div>
-            <div data-card className="rounded-xl border border-[#e7e8ea] bg-white p-8 transition-all duration-[400ms] ease-[cubic-bezier(0.22,1,0.36,1)] hover:-translate-y-1.5 hover:border-[#c9ccd1] md:col-span-5 md:p-10">
-              <div className="flex items-center gap-2.5">
-                <StatusDot tone="live" />
-                <span className="text-[12px] text-[#6b7075]">已上线</span>
-                <span className={`font-en ml-auto text-[11px] uppercase tracking-[0.14em] ${labelCls}`}>02 / People</span>
-              </div>
-              <h3 className="mt-5 text-[22px] font-semibold tracking-tight">组织管理</h3>
-              <p className="mt-3 text-[14px] leading-relaxed text-[#6b7075]">
-                真实组织树、M/P 等级、汇报线与在职状态，数据源 HR 花名册。
-              </p>
-              <div className="mt-7">
-                {isAdmin ? (
-                  <Link
-                    href="/organization"
-                    className={`inline-flex min-h-11 items-center rounded-lg bg-[#1a1c1d] px-6 text-[13px] font-medium text-white transition-all duration-200 hover:opacity-80 active:scale-[0.98] ${focusRing}`}
-                  >
-                    进入人员架构
-                  </Link>
-                ) : (
-                  <span className="inline-flex min-h-11 items-center rounded-lg border border-[#e7e8ea] px-6 text-[13px] text-[#6b7075]">
-                    需管理员权限
-                  </span>
-                )}
-              </div>
-            </div>
-            <div data-card className="rounded-xl border border-[#e7e8ea] bg-white p-8 transition-all duration-[400ms] ease-[cubic-bezier(0.22,1,0.36,1)] hover:-translate-y-1.5 hover:border-[#c9ccd1] md:col-span-5 md:p-10">
-              <div className="flex items-center gap-2.5">
-                <StatusDot tone="live" />
-                <span className="text-[12px] text-[#6b7075]">已上线</span>
-                <span className={`font-en ml-auto text-[11px] uppercase tracking-[0.14em] ${labelCls}`}>03 / Performance</span>
-              </div>
-              <h3 className="mt-5 text-[22px] font-semibold tracking-tight">绩效考核</h3>
-              <p className="mt-3 text-[14px] leading-relaxed text-[#6b7075]">
-                个人考核、公共看板与调研管理——任务进度和结果在同一处收敛。
-              </p>
-              <div className="mt-7">
-                <Link
-                  href="/performance-survey"
-                  className={`inline-flex min-h-11 items-center rounded-lg bg-[#1a1c1d] px-6 text-[13px] font-medium text-white transition-all duration-200 hover:opacity-80 active:scale-[0.98] ${focusRing}`}
-                >
-                  进入绩效考核
-                </Link>
-              </div>
-            </div>
-            <div data-card className="rounded-xl border border-[#e7e8ea] bg-white p-8 transition-all duration-[400ms] ease-[cubic-bezier(0.22,1,0.36,1)] hover:-translate-y-1.5 hover:border-[#c9ccd1] md:col-span-7 md:p-10">
-              <div className="flex items-center gap-2.5">
-                <StatusDot tone="live" />
-                <span className="text-[12px] text-[#6b7075]">已上线</span>
-                <span className={`font-en ml-auto text-[11px] uppercase tracking-[0.14em] ${labelCls}`}>04 / Review</span>
-              </div>
-              <h3 className="mt-5 text-[22px] font-semibold tracking-tight">作品过稿看板</h3>
-              <p className="mt-3 text-[14px] leading-relaxed text-[#6b7075]">
-                作品提交、版本迭代与评审意见——让创意协作从上传后继续推进。
-              </p>
-              <div className="mt-7">
-                <Link
-                  href="/work-review"
-                  className={`inline-flex min-h-11 items-center rounded-lg bg-[#1a1c1d] px-6 text-[13px] font-medium text-white transition-all duration-200 hover:opacity-80 active:scale-[0.98] ${focusRing}`}
-                >
-                  进入作品过稿看板
-                </Link>
-              </div>
-            </div>
-          </section>
-        )}
-
         {/* ===== 微型注脚 ===== */}
         <footer data-foot className="flex flex-wrap items-center gap-x-4 gap-y-2 border-t border-[#e7e8ea] py-10">
           <span className="font-en text-[10px] uppercase tracking-[0.2em] text-[#86898e]">Ground</span>