diff --git a/docs/asset-fault-management.md b/docs/asset-fault-management.md
new file mode 100644
index 0000000..ff921ad
--- /dev/null
+++ b/docs/asset-fault-management.md
@@ -0,0 +1,81 @@
+# 故障管理
+
+2026-10-13：故障管理为左侧独立业务入口 `/asset#faults`，与资产管理并列。首页展示四项总统计及故障趋势统计，不展示旧版维度排行或常驻故障明细。点击任一卡片进入多维分析，再进入故障明细。
+
+## 四项指标
+
+| 指标 | 口径 |
+| --- | --- |
+| 今日新增 | `fault_report_time` 在北京时间今日自然日内 |
+| 本日解决 | 状态已归档且 `archived_at` 在北京时间今日内，与提报日无关 |
+| 当前在办 | 全部待处理、处理中故障，不限制提报日期；按最新确认，在办 = 待处理 + 处理中 |
+| 累计台账 | 全部有效故障台账，包括归档、未闭环和其他状态 |
+
+「当前在办」卡片以“待处理 ＋ 处理中”展示构成，逾期以总量旁的“其中逾期”独立标记，均使用故障多维分析与故障明细下钻。按最新确认，在办仅为待处理与处理中之和，挂起保留在累计台账；旧兼容接口的全部未闭环口径保持不变。
+
+- 待处理/处理中：按 OneOS 标准化任务状态分别统计，兼容待处置、未处理、处置中等历史值。
+- 逾期：待处理或处理中，且保存的 `deadline_at` 严格早于本次数据时间。按北京时间解释截止时间，挂起和已归档不计入；无截止时间不自行以提报时间或固定 30 天推算。与 OneOS `selectSupervisorRows.overdueCount` 汇总口径一致，存储的截止时间包含业务端 SLA 配置及挂起顺延结果。
+- 逾期是当前在办的重叠子集，不与待处理、处理中相加。下钻明细不展示处置截止时间，也不提供该字段的统计维度；该字段仅保留用于逾期计算。
+- 四张卡片使用统一紧凑高度：桌面 164px、移动端 132px。
+
+所有数量以故障主键去重、单位为“单”；同车多故障分别统计。有效范围为 `vehicle_fault_manage.del_flag='0' AND is_submit IN (0,1)`。保留退出运营、缺失车辆关联的历史故障；缺失日期不以创建时间补齐。
+
+## 下钻
+
+在资产管理九个维度（车型、型号、区域、城市、部门、业务负责人、客户、资产用途、运营状态）基础上，增加独立的「运维处置人」「车牌」「故障工单状态」，共十二个维度，「运维处置人」固定为第二个维度选项，「车牌」为第三个。车牌取故障台账车牌，同车多故障按故障单计数，缺失车牌归入「未关联车辆」。支持组合分组、多选筛选、合并单元格、组内小计、排序、筛选此组、故障明细搜索和分批加载。运维处置人与业务负责人独立，按人员 ID 分组，同名不同 ID 不合并；多人共同处置分别计入各人，总数、上级小计和明细按故障去重，人员行不可直接相加。
+
+车辆相关维度使用车辆当前资料，运维处置人取故障或关联工单的当前处置分配。城市使用 OneOS `vehicle_info.operation_city` 对应的城市，不使用车机 GPS；区域采用 Asset BI 的宏观区域映射。客户/部门/业务负责人取每车最新 `vehicle_lease_order_record`，按 `last_delivery_time DESC,id DESC`，型号与车型复用资产管理的别名和分类函数。无匹配资料保留未知组。客户键采用散列，展示名称脱敏，不因相同脱敏名称合并不同客户。
+
+明细第一列主显示车牌、辅显示故障单号，第二列为运维处置人；其后依次展示故障描述、状态、提报时间、归档时间、运营城市、客户 / 部门。处置人来源优先级：有效来源任务工单多人→任务工单单人→故障多人→故障单人或历史姓名；用户 BIGINT ID 保持字符串精度，停用/删除人员保留历史姓名。
+
+## 权限与接口
+
+- `GET /api/asset-faults/overview`：北京时间日期、数据时间、四项总数。
+- `GET /api/asset-faults/analysis?metric=reported|closed|open|waiting|processing|suspended|overdue|ledger`：所选指标的授权记录及分析单元，供前端在同份数据上分组和下钻。
+- 旧 `GET /api/asset-faults` 查询接口保留兼容，首页不再使用。
+
+接口以只读一致性事务读取数据，不修改 OneOS 业务表，不运行定时任务或迁移。汇总及下钻先应用既有全量/部门/本人权限；历史故障不继承公共库存的权限放宽规则；缺车辆资料仅全量权限可见。无共享响应缓存，HTTP `no-store`。401 未认证、400 无效参数、503 查询失败。首页和下钻分别读取最新数据，实时变化可能造成短暂数量差异。
+
+源码依据（`oneos/ln-asset-management`）：`FaultLedgerStatus`、`FaultLedgerQuerySupport`、`FaultManualCreateSupport`、`FaultHandlerAssignmentService.resolveForSupervisorBatch`、`VehicleFaultDispositionServiceImpl.archiveNow`、`VehicleFaultDispositionMapper.xml`、`VehicleLeaseOrderRecordMapper.xml`。
+
+## 验证
+
+故障模型与路由测试覆盖北京时间午夜边界、跨日归档、全部日期在办、累计范围、权限隔离、客户脱敏、同车多故障、资产维度映射及总数与明细一致。同步运行导航、资产分组/筛选/合并单元格回归、TypeScript检查、生产构建及桌面/手机 Playwright 交互验证。仅本地开发，未部署。
+
+## 故障趋势统计
+
+复用交还车的日期选择器，默认北京时间近30天，支持自选日期（最多370天）、按日/按月切换。以 `fault_report_time` 划分新增批次，统计同一批故障截至查询时刻的已闭环（已归档）和未闭环（其他状态，含挂起）。不将该日归档的其他批次故障混入，归档时间可在提报区间之后。
+
+堆叠柱总高度为新增数，新增 = 已闭环 + 未闭环。零新增周期补零；无提报时间不进入趋势；月聚合严格保持起止边界，不扩展整月。每日/每月统计表按新日期在前展示新增、已闭环、未闭环和闭环率（零分母显示横线）。汇总与周期数字均可下钻到故障多维分析及故障明细。点击柱图内已闭环 / 未闭环色块，按对应日或月和状态下钻；趋势下钻默认按「运维处置人 → 故障工单状态」分组，重置也恢复这两个维度，按月仍保留所选日期边界。
+
+接口 `GET /api/asset-faults/trend?start=YYYY-MM-DD&end=YYYY-MM-DD&granularity=day|month` 返回区间汇总与周期序列。`GET /api/asset-faults/trend-analysis` 使用同样区间及粒度，可附 `period=YYYY-MM-DD|YYYY-MM` 和 `status=all|closed|unclosed`。两个接口均先应用原有数据权限，范围/粒度/周期校验在查询数据库前执行。总览和下钻按请求分别读取最新数据。
+
+## 故障运维周报
+
+周报复用故障处理趋势的日期选择器，默认业务周（周六至周五），支持自选最多370天。按最新要求仅展示「新增故障」「解决故障」两项区间合计、日期倒序的每日数量及表尾合计，均可下钻。汇总下方增加每日折线图，蓝色实线表示新增故障，绿色实线表示解决故障，与日期选择器、每日统计表使用同一份数据；补齐零值日期、纵轴从零开始，保留表格提供精确数量与下钻。
+
+- 新增故障：按 `fault_report_time` 当日计单。
+- 解决故障：已归档故障按 `archived_at` 当日计单，不受提报日期限制。
+
+已移除接收处理汇总、每日列、说明及故障明细中的接收时间列。现有接口暂保留接收指标兼容能力，页面不使用；不更改业务数据。
+
+接口：`GET /api/asset-faults/weekly-report?start=YYYY-MM-DD&end=YYYY-MM-DD`；下钻 `GET /api/asset-faults/weekly-report-analysis` 传 `metric=reported|closed`，可附 `day=YYYY-MM-DD`。所有计数和下钻均先应用既有业务数据权限，沿用只读事务及 HTTP no-store。
+
+页面时间标签统一为「解决时间」，底层仍取 `archived_at`，统计口径不变。周报折线图仍按时间正序，采用平滑实线、顶部图例、浅网格与统一悬浮提示。
+
+故障工单状态独立于车辆运营状态：已归档为「已闭环」，其他状态（含待处理、处理中、挂起）均为「未闭环」，与故障处理趋势口径一致。所有故障下钻入口均可按该维度分组、多选筛选、查看明细。
+
+所有下钻明细按提报时间倒序展示，无提报时间排在末尾；同一提报时间按故障 ID 倒序稳定排序。先筛选、排序，再分页，搜索和加载更多保持该顺序。
+
+客户展示：已关联车辆且当前运营状态为库存、客户为空时，客户分组、筛选和明细显示「库存车」（独立键 `inventory-unlinked`）；非库存或缺失车辆资料的空客户仍为「未关联客户」。有客户名称时仍按原客户展示和脱敏。此调整不改业务数据及权限。
+
+下钻维度和筛选按入口保存在当前页面内存中；关闭、误点遮罩或 Esc 后重新打开恢复已应用设置。各入口互不覆盖，桌面与手机共用。点击重置恢复该入口默认维度并清空筛选；刷新整个页面后全部清除，不写入 localStorage 或跨刷新存储。每次重开仍重新请求实时数据。
+
+## 报表导出
+
+故障处理趋势和故障运维周报标题右侧均提供「导出 Excel」。导出当前已加载且经过权限过滤的统计快照；日期范围、趋势按日/按月粒度与页面一致，不重新查询或扩大数据范围。加载中及请求失败时禁用导出，生成文件期间显示进度状态并防止重复点击，失败可重试。
+
+- 趋势：提报日期/月份、新增故障、已闭环、未闭环、闭环率，包含全部统计日期，按日期倒序。
+- 周报：日期、星期、新增故障、解决故障，按日期倒序；不导出接收处理指标。
+- XLSX 包含带标题、范围、数据时间、汇总指标的统计表；当前有图表时附加「图表」工作表，以图片保存页面图表快照并保持比例。图表为静态快照，修改统计表不会联动图表。
+- 统一深色表头、指标配色、交替底色、今日浅色标记；真实 Excel 日期和数字格式、合计及闭环率公式、冻结表头、筛选与打印设置。ExcelJS 按导出操作动态加载。
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index cb536e2..7d04805 100644
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+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/which-collection/-/which-collection-1.0.2.tgz",
+      "integrity": "sha512-K4jVyjnBdgvc86Y6BkaLZEN933SwYOuBFkdmBu9ZfkcAbdVbpITnDmjvZ/aQjRXQrv5EPkTnD1s39GiiqbngCw==",
+      "license": "MIT",
+      "dependencies": {
+        "is-map": "^2.0.3",
+        "is-set": "^2.0.3",
+        "is-weakmap": "^2.0.2",
+        "is-weakset": "^2.0.3"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
+    "node_modules/which-typed-array": {
+      "version": "1.1.24",
+      "resolved": "https://registry.npmjs.org/which-typed-array/-/which-typed-array-1.1.24.tgz",
+      "integrity": "sha512-wk4Mf4pR5mRP7eYuuTBCIQ9d0ud2Fv2jRLQpfgnRjbOxAFHmjKFValgTpitVKzJJS8ajnYQV2Du1SZ8j6b/EUQ==",
+      "license": "MIT",
+      "dependencies": {
+        "available-typed-arrays": "^1.0.7",
+        "call-bind": "^1.0.9",
+        "call-bound": "^1.0.4",
+        "for-each": "^0.3.5",
+        "get-proto": "^1.0.1",
+        "gopd": "^1.2.0",
+        "has-tostringtag": "^1.0.2"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
     "node_modules/win-release": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/win-release/-/win-release-1.1.1.tgz",
@@ -6975,6 +8986,12 @@
         "node": ">=4.0"
       }
     },
+    "node_modules/xmlchars": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/xmlchars/-/xmlchars-2.2.0.tgz",
+      "integrity": "sha512-JZnDKK8B0RCDw84FNdDAIpZK+JuJw+s7Lz8nksI7SIuU3UXJJslUthsi+uWBUYOwPFwW7W7PRLRfUKpxjtjFCw==",
+      "license": "MIT"
+    },
     "node_modules/xtend": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
@@ -7030,6 +9047,55 @@
         "node": ">=12"
       }
     },
+    "node_modules/zip-stream": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/zip-stream/-/zip-stream-4.1.1.tgz",
+      "integrity": "sha512-9qv4rlDiopXg4E69k+vMHjNN63YFMe9sZMrdlvKnCjlCRWeCBswPPMPUfx+ipsAWq1LXHe70RcbaHdJJpS6hyQ==",
+      "license": "MIT",
+      "dependencies": {
+        "archiver-utils": "^3.0.4",
+        "compress-commons": "^4.1.2",
+        "readable-stream": "^3.6.0"
+      },
+      "engines": {
+        "node": ">= 10"
+      }
+    },
+    "node_modules/zip-stream/node_modules/archiver-utils": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/archiver-utils/-/archiver-utils-3.0.4.tgz",
+      "integrity": "sha512-KVgf4XQVrTjhyWmx6cte4RxonPLR9onExufI1jhvw/MQ4BB6IsZD5gT8Lq+u/+pRkWna/6JoHpiQioaqFP5Rzw==",
+      "license": "MIT",
+      "dependencies": {
+        "glob": "^7.2.3",
+        "graceful-fs": "^4.2.0",
+        "lazystream": "^1.0.0",
+        "lodash.defaults": "^4.2.0",
+        "lodash.difference": "^4.5.0",
+        "lodash.flatten": "^4.4.0",
+        "lodash.isplainobject": "^4.0.6",
+        "lodash.union": "^4.6.0",
+        "normalize-path": "^3.0.0",
+        "readable-stream": "^3.6.0"
+      },
+      "engines": {
+        "node": ">= 10"
+      }
+    },
+    "node_modules/zip-stream/node_modules/readable-stream": {
+      "version": "3.6.2",
+      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.2.tgz",
+      "integrity": "sha512-9u/sniCrY3D5WdsERHzHE4G2YCXqoG5FTHUiCC4SIbr6XcLZBY05ya9EKjYek9O5xOAwjGq+1JdGBAS7Q9ScoA==",
+      "license": "MIT",
+      "dependencies": {
+        "inherits": "^2.0.3",
+        "string_decoder": "^1.1.1",
+        "util-deprecate": "^1.0.1"
+      },
+      "engines": {
+        "node": ">= 6"
+      }
+    },
     "node_modules/zrender": {
       "version": "6.1.0",
       "resolved": "https://registry.npmjs.org/zrender/-/zrender-6.1.0.tgz",
diff --git a/package.json b/package.json
index a21fffb..e8159c1 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,7 @@
     "cn": "^0.4.0",
     "dotenv": "^16.4.0",
     "echarts": "^6.1.0",
+    "exceljs": "4.4.0",
     "hono": "^4.7.0",
     "jsonwebtoken": "^9.0.3",
     "lucide-react": "^0.546.0",
diff --git a/src/app/modules.test.ts b/src/app/modules.test.ts
index 02b8d40..5cbda3e 100644
--- a/src/app/modules.test.ts
+++ b/src/app/modules.test.ts
@@ -12,9 +12,10 @@ function heatmapChildIds(roles?: string[]): string[] {
 }
 
 test('keeps the base asset navigation and role-gated scheduling module', () => {
-  assert.deepEqual(moduleIds(), ['assets', 'mileage', 'heatmap']);
+  assert.deepEqual(moduleIds(), ['assets', 'faults', 'mileage', 'heatmap']);
   assert.deepEqual(moduleIds(['BI-SCHEDULE-OPT']), [
     'assets',
+    'faults',
     'mileage',
     'heatmap',
     'scheduling',
diff --git a/src/app/modules.ts b/src/app/modules.ts
index 143c9d3..c455097 100644
--- a/src/app/modules.ts
+++ b/src/app/modules.ts
@@ -7,12 +7,14 @@ import {
   Receipt,
   Route,
   Truck,
+  Wrench,
 } from 'lucide-react';
 import type { ModuleConfig } from '../components/Shell';
 import { canAccessEnergy, canAccessScheduling } from '../shared/auth/roles';
 import type { PathSet } from './routing';
 
 const AssetsModule = lazy(() => import('../modules/assets/AssetsModule'));
+const FaultManagement = lazy(() => import('../modules/assets/faults/FaultManagement'));
 const MileageModule = lazy(() => import('../modules/mileage/MileageModule'));
 const SchedulingModule = lazy(() => import('../modules/scheduling/SchedulingModule'));
 const HydrogenModule = lazy(() => import('../modules/energy/HydrogenModule'));
@@ -23,6 +25,7 @@ const HydrogenHeatmapModule = lazy(() => import('../modules/hydrogen-heatmap/Hyd
 
 const ASSET_MODULES: ModuleConfig[] = [
   { id: 'assets', label: '资产管理', icon: Truck, component: AssetsModule },
+  { id: 'faults', label: '故障管理', icon: Wrench, component: FaultManagement },
   { id: 'mileage', label: '里程管理', icon: Route, component: MileageModule },
 ];
 
diff --git a/src/modules/assets/components/analysis/MobileAnalysisControls.tsx b/src/modules/assets/components/analysis/MobileAnalysisControls.tsx
new file mode 100644
index 0000000..80a888c
--- /dev/null
+++ b/src/modules/assets/components/analysis/MobileAnalysisControls.tsx
@@ -0,0 +1,71 @@
+import { useId, useRef, useState } from 'react';
+import { ArrowLeft, Check, ChevronDown, Filter, Search, X } from 'lucide-react';
+
+export type MobileDimension = { key: string; label: string; options: { value: string; label: string; count?: number }[] };
+type Filters = Partial<Record<string, string[]>>;
+type Props = {
+  available: MobileDimension[];
+  dimensions: string[];
+  filters: Filters;
+  defaults: string[];
+  apply: (dimensions: string[], filters: Filters) => void;
+};
+
+/** Draft all mobile settings together; cancelling never changes the current result. */
+export function MobileAnalysisControls({ available, dimensions, filters, defaults, apply }: Props) {
+  const [mode, setMode] = useState<'group' | 'filter' | null>(null);
+  const [draftDimensions, setDraftDimensions] = useState(dimensions);
+  const [draftFilters, setDraftFilters] = useState(filters);
+  const [editing, setEditing] = useState<string | null>(null);
+  const [query, setQuery] = useState('');
+  const trigger = useRef<HTMLButtonElement | null>(null);
+  const panel = useRef<HTMLDivElement>(null);
+  const id = useId();
+  const selected = available.filter(d => filters[d.key]?.length);
+  const editor = available.find(d => d.key === editing);
+  const options = editor?.options.filter(o => o.label.toLocaleLowerCase().includes(query.toLocaleLowerCase())) || [];
+  const close = () => { setMode(null); trigger.current?.focus(); };
+  const open = (next: 'group' | 'filter', button: HTMLButtonElement) => {
+    trigger.current = button; setDraftDimensions([...dimensions]); setDraftFilters({ ...filters });
+    setEditing(null); setQuery(''); setMode(next);
+    requestAnimationFrame(() => panel.current?.focus());
+  };
+  const toggle = (key: string, value: string) => {
+    const values = draftFilters[key] || [];
+    setDraftFilters({ ...draftFilters, [key]: values.includes(value) ? values.filter(v => v !== value) : [...values, value] });
+  };
+  return <div className="analysis-mobile-controls">
+    <div className="analysis-mobile-dimension-heading"><strong>分析维度</strong><span>可多选 · 左右滑动</span><button onClick={e => open('group', e.currentTarget)} aria-expanded={mode === 'group'} aria-controls={id}>分组设置</button></div>
+    <div className="analysis-mobile-toolbar">
+      <div className="analysis-dimension-strip" role="group" aria-label="分析维度">
+        {available.map(d => <button key={d.key} type="button" aria-pressed={dimensions.includes(d.key)} onClick={() => apply(dimensions.includes(d.key) ? dimensions.filter(key => key !== d.key) : [...dimensions, d.key], filters)}>{d.label}{dimensions.includes(d.key) && <small>{dimensions.indexOf(d.key) + 1}</small>}</button>)}
+        <button type="button" aria-pressed={!dimensions.length} onClick={() => apply([], filters)}>仅汇总</button>
+      </div>
+      <button type="button" onClick={e => open('filter', e.currentTarget)} aria-expanded={mode === 'filter'} aria-controls={id}><Filter size={16} />筛选{selected.length ? ` ${selected.length}` : ''}</button>
+    </div>
+    {!!selected.length && <div className="analysis-mobile-chips" aria-label="已选筛选条件">{selected.map(d => <button key={d.key} title={(filters[d.key] || []).map(v => d.options.find(o => o.value === v)?.label || v).join('、')} aria-label={`移除${d.label}筛选`} onClick={() => { const next = { ...filters }; delete next[d.key]; apply(dimensions, next); }}><span>{d.label}：{filters[d.key]?.length === 1 ? d.options.find(o => o.value === filters[d.key]?.[0])?.label || filters[d.key]?.[0] : `${filters[d.key]?.length}项`}</span><X size={14} /></button>)}</div>}
+    {mode && <div className="analysis-settings-backdrop" onClick={e => { if (e.target === e.currentTarget) close(); }}>
+      <div ref={panel} id={id} role="dialog" aria-modal="true" aria-label={mode === 'group' ? '分组设置' : '筛选条件'} tabIndex={-1} className="analysis-settings-panel" onKeyDown={e => {
+        if (e.key === 'Escape') { e.preventDefault(); e.stopPropagation(); if (editing) { setEditing(null); setQuery(''); } else close(); }
+        if (e.key === 'Tab') {
+          e.stopPropagation();
+          const items = Array.from(panel.current?.querySelectorAll<HTMLElement>('button:not([disabled]),input') || []).filter(el => el.getClientRects().length);
+          const first = items[0], last = items.at(-1);
+          if (e.shiftKey && (document.activeElement === first || document.activeElement === panel.current)) { e.preventDefault(); last?.focus(); }
+          else if (!e.shiftKey && (document.activeElement === last || document.activeElement === panel.current)) { e.preventDefault(); first?.focus(); }
+        }
+      }}>
+        <header><button aria-label={editing ? '返回筛选条件' : '取消设置'} onClick={() => editing ? (setEditing(null), setQuery('')) : close()}><ArrowLeft size={20} /></button><h3>{editor?.label || (mode === 'group' ? '分组设置' : '筛选条件')}</h3><button aria-label="关闭设置" onClick={close}><X size={20} /></button></header>
+        {editor && <label className="analysis-settings-search"><Search size={17} /><input aria-label={`搜索${editor.label}`} placeholder={`搜索${editor.label}`} value={query} onChange={e => setQuery(e.target.value)} /></label>}
+        <div className="analysis-settings-content">
+          {mode === 'group' ? <><p>可选择多个维度，按选择顺序组合统计。</p><div className="analysis-settings-groups">{available.map(d => <button key={d.key} aria-pressed={draftDimensions.includes(d.key)} onClick={() => setDraftDimensions(draftDimensions.includes(d.key) ? draftDimensions.filter(v => v !== d.key) : [...draftDimensions, d.key])}><span>{d.label}</span>{draftDimensions.includes(d.key) && <span className="analysis-dimension-order">{draftDimensions.indexOf(d.key) + 1}</span>}</button>)}</div><button className="analysis-settings-row" aria-pressed={!draftDimensions.length} onClick={() => setDraftDimensions([])}>仅汇总，不分组{!draftDimensions.length && <Check size={18} />}</button></> : editor ? <>
+            <div className="analysis-settings-select"><button onClick={() => setDraftFilters({ ...draftFilters, [editor.key]: [...new Set([...(draftFilters[editor.key] || []), ...options.map(o => o.value)])] })}>全选{query ? '搜索结果' : ''}</button><button onClick={() => setDraftFilters({ ...draftFilters, [editor.key]: [] })}>清除选择</button><span>{draftFilters[editor.key]?.length || 0} 项已选</span></div>
+            {options.map(o => <label className="analysis-settings-option" key={o.value}><input type="checkbox" checked={draftFilters[editor.key]?.includes(o.value) || false} onChange={() => toggle(editor.key, o.value)} /><span>{o.label}</span>{o.count !== undefined && <small>{o.count.toLocaleString()}</small>}</label>)}
+            {!options.length && <p>没有匹配选项，可调整搜索。</p>}
+          </> : <><p>同一维度多选取并集，不同维度同时满足。未选择表示不限。</p>{available.map(d => <button className="analysis-settings-row" key={d.key} onClick={() => { setEditing(d.key); setQuery(''); }}><span>{d.label}</span><small>{draftFilters[d.key]?.length ? `已选 ${draftFilters[d.key]?.length} 项` : '不限'}</small><ChevronDown size={16} /></button>)}</>}
+        </div>
+        <footer><button onClick={() => mode === 'group' ? setDraftDimensions([...defaults]) : setDraftFilters({})}>重置{mode === 'group' ? '分组' : '筛选'}</button><button className="analysis-settings-apply" onClick={() => { const clean = Object.fromEntries(Object.entries(draftFilters).filter(([, values]) => values?.length)); apply(draftDimensions, clean); close(); }}>查看结果</button></footer>
+      </div>
+    </div>}
+  </div>;
+}
diff --git a/src/modules/assets/components/analysis/MobileGroupedTable.tsx b/src/modules/assets/components/analysis/MobileGroupedTable.tsx
new file mode 100644
index 0000000..73195e0
--- /dev/null
+++ b/src/modules/assets/components/analysis/MobileGroupedTable.tsx
@@ -0,0 +1,40 @@
+import type { ReactNode } from 'react';
+import { Filter } from 'lucide-react';
+
+type Row = { key: string; label: string; values: ReactNode[]; count: number; share: number; note?: ReactNode };
+type Props = {
+  dimensions: string[];
+  rows: Row[];
+  unit: string;
+  merged: boolean;
+  setMerged: (value: boolean) => void;
+  spans: number[][];
+  parentTotals: number[][];
+  onDetails: (index: number) => void;
+  onFilter?: (index: number) => void;
+};
+
+/** Retain table semantics and actual parent row spans at narrow viewport widths. */
+export function MobileGroupedTable({ dimensions, rows, unit, merged, setMerged, spans, parentTotals, onDetails, onFilter }: Props) {
+  const multiple = dimensions.length > 1;
+  return <section className={`analysis-mobile-grid${onFilter ? '' : ' without-filter'}`}>
+    <div className="analysis-mobile-grid-heading"><strong>分组统计</strong>{multiple ? <label><input type="checkbox" role="switch" checked={merged} onChange={e => setMerged(e.target.checked)} /><span>合并单元格</span></label> : <span>数量 · 占比</span>}</div>
+    {multiple && <p className="analysis-mobile-grid-hint">左右滑动查看完整表格{merged ? ' · 相同上级已合并' : ' · 每行独立显示'}</p>}
+    <div className="analysis-mobile-grid-scroll" role="region" aria-label="分组统计表，可左右滑动" tabIndex={0}>
+      <table style={{ minWidth: multiple ? `${dimensions.length * 108 + 192}px` : '100%' }}>
+        <thead><tr>{dimensions.length ? dimensions.map((label, i) => <th scope="col" key={i}>{label}</th>) : <th scope="col">范围</th>}<th scope="col" className="mobile-grid-number">数量<small>（{unit}）</small></th><th scope="col" className="mobile-grid-share">占比</th><th scope="col" className="mobile-grid-actions">操作</th></tr></thead>
+        <tbody>{rows.map((row, rowIndex) => <tr key={row.key} className={merged && spans[rowIndex]?.[0] > 0 ? 'mobile-grid-group-start' : undefined}>
+          {dimensions.length ? row.values.map((value, colIndex) => {
+            const span = merged ? spans[rowIndex]?.[colIndex] ?? 1 : 1;
+            if (!span) return null;
+            const parent = merged && colIndex < dimensions.length - 1;
+            return <td key={colIndex} rowSpan={span} className={parent ? 'mobile-grid-parent' : 'mobile-grid-label'}>{value}{parent && <small>合计 <b>{parentTotals[rowIndex]?.[colIndex]?.toLocaleString('zh-CN')}</b> {unit}</small>}</td>;
+          }) : <td className="mobile-grid-label">当前结果</td>}
+          <td className="mobile-grid-number"><strong>{row.count.toLocaleString('zh-CN')}</strong>{row.note && <small>{row.note}</small>}</td>
+          <td className="mobile-grid-share"><span>{row.share.toFixed(1)}%</span><i aria-hidden="true"><i style={{ width: `${row.share}%` }} /></i></td>
+          <td className="mobile-grid-actions"><div>{onFilter && dimensions.length > 0 && <button className="mobile-grid-filter" aria-label={`筛选分组 ${row.label}`} title="筛选此组" onClick={() => onFilter(rowIndex)}><Filter size={15} /></button>}<button aria-label={`查看明细 ${row.label}`} onClick={() => onDetails(rowIndex)}>明细</button></div></td>
+        </tr>)}</tbody>
+      </table>
+    </div>
+  </section>;
+}
diff --git a/src/modules/assets/components/analysis/mobile-analysis.css b/src/modules/assets/components/analysis/mobile-analysis.css
new file mode 100644
index 0000000..3afefb0
--- /dev/null
+++ b/src/modules/assets/components/analysis/mobile-analysis.css
@@ -0,0 +1,157 @@
+/* Shared mobile presentation for asset statistics, filters and vehicle details. */
+@media (max-width: 767px) {
+  .asset-analysis-overlay, .bi-flow-modal-backdrop { padding: 0; align-items: stretch; }
+  .asset-analysis-dialog, .bi-flow-modal { width: 100%; max-width: none; height: 100dvh; max-height: 100dvh; min-height: 0; border-radius: 0; font-size: 13px; }
+  .analysis-header, .bi-flow-modal-header { padding: max(6px, env(safe-area-inset-top)) 10px 6px; background: #fff; color: var(--color-slate-800, #1e293b); border-bottom: 1px solid var(--color-slate-200, #e2e8f0); }
+  .analysis-header { gap: 8px; }
+  .analysis-header > div { flex: 1; min-width: 0; }
+  .analysis-header h2, .bi-flow-modal-header h3 { font-size: 15px; }
+  .analysis-header h2 > svg { display: none; }
+  .analysis-header h2, .bi-flow-modal-header h3 { border-left: 3px solid var(--color-blue-600, #2563eb); padding-left: 8px; }
+  .analysis-header p, .bi-flow-modal-header p { font-size: 11px; line-height: 1.5; color: var(--color-slate-500, #64748b); }
+  .analysis-header button, .bi-flow-modal-close, .bi-flow-mobile-back { display: grid; place-items: center; flex-shrink: 0; width: 44px; height: 44px; padding: 0; color: var(--color-slate-500, #64748b); background: var(--color-slate-50, #f8fafc); border-radius: 8px; }
+  .analysis-header button:hover, .bi-flow-modal-close:hover { background: var(--color-blue-50, #eff6ff); }
+  .analysis-scroll, .bi-flow-modal-body { padding: 12px 16px max(16px, env(safe-area-inset-bottom)); background: var(--app-bg, #f4f7fb); }
+  .analysis-result-bar { padding: 10px 14px; gap: 8px; font-size: 12px; background: var(--color-blue-50, #eff6ff); border: 1px solid var(--color-blue-100, #dbeafe); border-radius: 10px; color: var(--color-slate-600, #475569); margin-bottom: 10px; }
+  .analysis-result-bar strong { font-size: 28px; margin: 0 4px; color: var(--color-blue-600, #2563eb); }
+  .analysis-result-dimensions { display: none; }
+  .analysis-inventory-subsets { gap: 5px 12px; font-size: 11px; margin: -11px 0 8px; padding: 8px 14px; background: var(--color-blue-50, #eff6ff); border: 1px solid var(--color-blue-100, #dbeafe); border-top: 0; border-radius: 0 0 10px 10px; }
+  .analysis-inventory-subsets small { width: 100%; font-size: 11px; }
+  .analysis-mobile-toolbar { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 8px; }
+  .analysis-mobile-toolbar > button { display: flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; border: 1px solid #d8e0eb; border-radius: 9px; padding: 8px 12px; background: #f8fafc; color: #334155; font-size: 13px; }
+  .analysis-mobile-toolbar > button:first-child { justify-content: space-between; }
+  .analysis-mobile-toolbar > button > span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+  .analysis-mobile-toolbar svg { flex-shrink: 0; }
+  .analysis-mobile-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
+  .analysis-mobile-chips button { display: flex; align-items: center; gap: 6px; max-width: 100%; min-height: 44px; padding: 6px 10px; border-radius: 8px; color: var(--color-blue-700, #1d4ed8); background: #eff6ff; font-size: 11px; }
+  .analysis-mobile-chips span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+  .analysis-mobile-chips svg { flex-shrink: 0; }
+  .analysis-overview-tools > p, .analysis-overview-tools .analysis-merge-toggle { display: none; }
+  .analysis-overview-tools.is-empty { display: none; }
+  .analysis-overview-tools .analysis-table-options { width: 100%; justify-content: space-between; gap: 6px; }
+  .analysis-table-tools { margin: 8px 0; }
+  .analysis-table-tools label, .analysis-table-tools select, .analysis-export-action button { font-size: 11px; }
+  .analysis-table-tools select, .analysis-export-action button { min-height: 44px; }
+  .analysis-table-tools h3 { font-size: 14px; }
+  .analysis-table-tools h3 small { font-size: 12px; }
+  .analysis-table-total { border: 0; border-radius: 0; background: none; padding: 8px 0; font-size: 11px; line-height: 1.6; }
+  .analysis-table-total > span:last-child { display: none; }
+  .analysis-mobile-detail-scope { font-size: 12px; color: #64748b; margin-bottom: 8px; }
+  .analysis-search { width: 100%; min-height: 44px; padding: 9px 12px; border-radius: 8px; }
+  .analysis-search input { font-size: 16px; width: 100%; }
+  .analysis-vehicle-cards { display: grid; gap: 8px; margin-top: 10px; }
+  .analysis-vehicle-card { min-width: 0; padding: 12px; border: 1px solid #e2e8f0; border-radius: 10px; background: #fff; }
+  .analysis-vehicle-card header { display: flex; align-items: flex-start; flex-wrap: wrap; gap: 6px 12px; justify-content: space-between; }
+  .analysis-vehicle-card h4 { color: var(--color-blue-700, #1d4ed8); font-size: 14px; font-weight: 600; line-height: 1.5; overflow-wrap: anywhere; }
+  .analysis-vehicle-card header > span { font-size: 11px; padding: 3px 6px; border-radius: 4px; color: #475569; background: #f1f5f9; }
+  .analysis-vehicle-card > p { font-size: 12px; color: #64748b; line-height: 1.6; margin-top: 6px; overflow-wrap: anywhere; }
+  .analysis-vehicle-card summary { display: flex; align-items: center; min-height: 44px; font-size: 12px; color: var(--color-blue-600, #2563eb); cursor: pointer; }
+  .analysis-vehicle-card summary::after { content: '＋'; margin-left: auto; }
+  .analysis-vehicle-card details[open] summary::after { content: '−'; }
+  .analysis-vehicle-card dl > div { display: grid; grid-template-columns: 90px minmax(0,1fr); gap: 10px; padding: 4px 0; font-size: 12px; line-height: 1.6; }
+  .analysis-vehicle-card dt { color: #64748b; }
+  .analysis-vehicle-card dd { color: #334155; overflow-wrap: anywhere; }
+  .analysis-footer { padding: 0 16px max(0px, env(safe-area-inset-bottom)); background: #fff; font-size: 11px; }
+  .analysis-footer details { width: 100%; max-height: 28dvh; overflow-y: auto; }
+  .analysis-footer summary { display: flex; align-items: center; min-height: 44px; cursor: pointer; }
+  .analysis-footer details p { margin-bottom: 10px; line-height: 1.6; }
+  .analysis-message { font-size: 13px; min-height: 240px; }
+  .analysis-message h3 { font-size: 15px; }
+  .analysis-definition { font-size: 11px; }
+  .analysis-details .text-base { font-size: 14px; }
+  .analysis-details .text-sm { font-size: 13px; }
+  .analysis-details .text-xs { font-size: 11px; }
+  .analysis-details .space-y-3.px-3 { padding: 0; }
+  .analysis-details .space-y-3 article { box-shadow: none; }
+  .analysis-settings-backdrop { position: fixed; inset: 0; z-index: 30; background: rgb(15 23 42 / 38%); display: flex; align-items: flex-end; }
+  .analysis-settings-panel { display: flex; flex-direction: column; width: 100%; height: min(680px, 90dvh); min-height: 0; background: #fff; border-radius: 12px 12px 0 0; color: #334155; box-shadow: 0 -12px 36px #0f172a20; outline: none; }
+  .analysis-settings-panel header { display: flex; align-items: center; gap: 8px; padding: 8px 12px; border-bottom: 1px solid #e2e8f0; }
+  .analysis-settings-panel header h3 { flex: 1; font-size: 15px; font-weight: 600; }
+  .analysis-settings-panel header button { width: 44px; height: 44px; display: grid; place-items: center; }
+  .analysis-settings-search { display: flex; align-items: center; gap: 8px; margin: 12px 16px 0; padding: 10px 12px; border: 1px solid #cbd5e1; border-radius: 8px; }
+  .analysis-settings-search input { min-width: 0; width: 100%; font-size: 16px; outline: none; }
+  .analysis-settings-content { flex: 1; min-height: 0; overflow: auto; overscroll-behavior: contain; padding: 12px 16px; }
+  .analysis-settings-content > p { color: #64748b; font-size: 12px; line-height: 1.6; margin: 0 0 12px; }
+  .analysis-settings-groups { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px; margin-bottom: 18px; }
+  .analysis-settings-groups button { min-height: 48px; display: flex; align-items: center; justify-content: space-between; padding: 10px 12px; border: 1px solid #d8e0eb; border-radius: 8px; font-size: 13px; }
+  .analysis-settings-groups button[aria-pressed=true] { color: var(--color-blue-700, #1d4ed8); background: #eff6ff; border-color: #93c5fd; }
+  .analysis-settings-groups .analysis-dimension-order { width: 20px; height: 20px; font-size: 11px; }
+  .analysis-settings-row { display: flex; gap: 10px; width: 100%; align-items: center; min-height: 48px; padding: 8px 0; border-bottom: 1px solid #e2e8f0; text-align: left; font-size: 13px; }
+  .analysis-settings-row > span { flex: 1; }
+  .analysis-settings-row > small { font-size: 12px; color: #64748b; }
+  .analysis-settings-select { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; font-size: 12px; }
+  .analysis-settings-select button { min-height: 44px; color: var(--color-blue-600, #2563eb); }
+  .analysis-settings-select > span { margin-left: auto; color: #64748b; }
+  .analysis-settings-option { display: flex; align-items: center; gap: 12px; min-height: 48px; padding: 8px 0; border-bottom: 1px solid #f1f5f9; font-size: 13px; }
+  .analysis-settings-option input { width: 18px; height: 18px; accent-color: var(--color-blue-600, #2563eb); flex-shrink: 0; }
+  .analysis-settings-option span { flex: 1; overflow-wrap: anywhere; }
+  .analysis-settings-option small { color: #64748b; font-size: 12px; }
+  .analysis-settings-panel footer { display: grid; grid-template-columns: 1fr 2fr; gap: 12px; padding: 12px 16px max(12px, env(safe-area-inset-bottom)); border-top: 1px solid #e2e8f0; }
+  .analysis-settings-panel footer button { min-height: 46px; border-radius: 9px; background: #f1f5f9; font-size: 13px; }
+  .analysis-settings-panel footer .analysis-settings-apply { background: var(--color-blue-600, #2563eb); color: #fff; }
+}
+@media (max-width: 767px) {
+  .bi-flow-modal-header-row { align-items: center; gap: 8px; }
+  .bi-flow-modal-header-row > div { flex: 1; min-width: 0; }
+  .bi-flow-modal-summary { margin: 0 0 12px; background: var(--color-blue-50, #eff6ff); border-color: var(--color-blue-100, #dbeafe); }
+  .bi-flow-modal-summary > div { padding: 10px 8px; gap: 6px; }
+  .bi-flow-modal-summary span, .bi-flow-modal strong small { font-size: 11px; }
+  .bi-flow-modal-summary strong { font-size: 23px; }
+  .bi-flow-modal-section-heading { margin: 12px 0 4px; }
+  .bi-flow-modal-section-heading h4 { font-size: 14px; }
+  .bi-flow-modal-section-heading p { font-size: 11px; }
+  .bi-flow-modal-empty { font-size: 13px; line-height: 1.7; color: #64748b; }
+}
+@media (max-width: 767px) {
+  .analysis-details .space-y-3 dt { font-size: 11px; line-height: 1.8; }
+}
+
+@media (max-width: 767px) {
+  .analysis-mobile-controls { position: sticky; top: -12px; z-index: 5; background: var(--app-bg, #f4f7fb); padding: 0 0 6px; }
+  .analysis-mobile-dimension-heading { display: flex; align-items: center; gap: 8px; color: var(--color-slate-700, #334155); font-size: 12px; }
+  .analysis-mobile-dimension-heading > span { color: var(--color-slate-500, #64748b); font-size: 11px; }
+  .analysis-mobile-dimension-heading > button { margin-left: auto; min-height: 44px; color: var(--color-blue-600, #2563eb); font-size: 11px; }
+  .analysis-mobile-toolbar { grid-template-columns: minmax(0, 1fr) auto; gap: 8px; }
+  .analysis-mobile-toolbar > button { align-self: start; height: 44px; padding: 0 8px; gap: 4px; white-space: nowrap; color: var(--color-blue-600, #2563eb); border-color: var(--color-blue-100, #dbeafe); background: var(--color-blue-50, #eff6ff); }
+  .analysis-dimension-strip { display: flex; gap: 6px; min-width: 0; overflow-x: auto; overscroll-behavior-x: contain; scrollbar-width: thin; scrollbar-color: var(--color-slate-300, #cbd5e1) transparent; padding-bottom: 4px; }
+  .analysis-dimension-strip button { flex: 0 0 auto; display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 44px; padding: 0 11px; border: 1px solid var(--color-slate-200, #e2e8f0); border-radius: 8px; background: #fff; color: var(--color-slate-600, #475569); font-size: 12px; }
+  .analysis-dimension-strip button[aria-pressed=true] { background: var(--color-blue-600, #2563eb); border-color: var(--color-blue-600, #2563eb); color: #fff; box-shadow: 0 2px 4px rgb(37 99 235 / 12%); }
+  .analysis-dimension-strip small { display: grid; place-items: center; width: 17px; height: 17px; border-radius: 50%; background: #ffffff2b; font-size: 10px; }
+  .analysis-mobile-grid { border: 1px solid var(--color-slate-200, #e2e8f0); border-radius: 10px; overflow: hidden; background: #fff; box-shadow: 0 2px 6px rgb(15 23 42 / 3%); }
+  .analysis-mobile-grid-heading { min-height: 44px; display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 0 12px; background: var(--color-blue-50, #eff6ff); color: var(--color-slate-700, #334155); font-size: 12px; }
+  .analysis-mobile-grid-heading > span { font-size: 11px; color: var(--color-slate-500, #64748b); }
+  .analysis-mobile-grid-heading label { display: inline-flex; align-items: center; gap: 7px; min-height: 44px; font-size: 11px; cursor: pointer; }
+  .analysis-mobile-grid-heading input { appearance: none; width: 30px; height: 18px; border-radius: 10px; background: var(--color-slate-400, #94a3b8); position: relative; cursor: pointer; }
+  .analysis-mobile-grid-heading input::after { content: ''; position: absolute; top: 3px; left: 3px; width: 12px; height: 12px; border-radius: 50%; background: #fff; }
+  .analysis-mobile-grid-heading input:checked { background: var(--color-blue-600, #2563eb); }
+  .analysis-mobile-grid-heading input:checked::after { left: 15px; }
+  .analysis-mobile-grid-hint { padding: 6px 12px; font-size: 11px; color: var(--color-slate-500, #64748b); border-bottom: 1px solid var(--color-slate-200, #e2e8f0); background: var(--color-slate-50, #f8fafc); }
+  .analysis-mobile-grid-scroll { overflow-x: auto; overscroll-behavior-x: contain; scrollbar-width: thin; }
+  .analysis-mobile-grid table { width: 100%; border-collapse: separate; border-spacing: 0; table-layout: fixed; font-size: 12px; }
+  .analysis-mobile-grid th { background: var(--color-slate-50, #f8fafc); color: var(--color-slate-500, #64748b); font-weight: 500; padding: 7px 6px; text-align: left; border-bottom: 1px solid var(--color-slate-200, #e2e8f0); }
+  .analysis-mobile-grid th:first-child { padding-left: 12px; }
+  .analysis-mobile-grid td { padding: 4px 6px; border-bottom: 1px solid var(--color-slate-100, #f1f5f9); vertical-align: middle; overflow-wrap: anywhere; color: var(--color-slate-700, #334155); line-height: 1.5; }
+  .analysis-mobile-grid tr:nth-child(even) td { background: var(--color-slate-50, #f8fafc); }
+  .analysis-mobile-grid tr:last-child td { border-bottom: 0; }
+  .analysis-mobile-grid td:first-child { padding-left: 12px; }
+  .analysis-mobile-grid .mobile-grid-parent { background: var(--color-blue-50, #eff6ff); border-right: 1px solid var(--color-blue-100, #dbeafe); font-weight: 600; vertical-align: top; padding-top: 14px; }
+  .analysis-mobile-grid .mobile-grid-parent small { display: block; margin-top: 6px; font-size: 11px; font-weight: 400; color: var(--color-slate-500, #64748b); }
+  .analysis-mobile-grid .mobile-grid-group-start:not(:first-child) td { border-top: 1px solid var(--color-slate-300, #cbd5e1); }
+  .analysis-mobile-grid .mobile-grid-number { width: 60px; text-align: right; font-variant-numeric: tabular-nums; }
+  .analysis-mobile-grid th small { display: block; font-size: 10px; }
+  .analysis-mobile-grid td.mobile-grid-number strong { font-size: 17px; color: var(--color-blue-600, #2563eb); font-weight: 600; }
+  .analysis-mobile-grid td.mobile-grid-number small { display: block; font-size: 10px; color: var(--color-amber-600, #d97706); }
+  .analysis-mobile-grid .mobile-grid-share { width: 58px; text-align: right; font-size: 11px; font-variant-numeric: tabular-nums; }
+  .mobile-grid-share > i { display: block; margin-top: 5px; height: 3px; border-radius: 3px; overflow: hidden; background: var(--color-blue-100, #dbeafe); }
+  .mobile-grid-share > i > i { display: block; height: 100%; background: var(--color-blue-500, #3b82f6); }
+  .analysis-mobile-grid .mobile-grid-actions { width: 90px; text-align: center; padding-left: 0; padding-right: 4px; }
+  .analysis-mobile-grid.without-filter .mobile-grid-actions { width: 56px; }
+  .mobile-grid-actions > div { display: flex; justify-content: flex-end; }
+  .mobile-grid-actions button { display: grid; place-items: center; min-width: 44px; height: 44px; color: var(--color-blue-600, #2563eb); font-size: 11px; border-radius: 7px; }
+  .mobile-grid-actions button:active { background: #dbeafe; }
+  .mobile-grid-actions .mobile-grid-filter { color: var(--color-slate-400, #94a3b8); }
+  .analysis-table-tools { margin-top: 0; }
+  .analysis-mobile-detail-scope { padding: 10px 12px; border-left: 3px solid var(--color-blue-600, #2563eb); border-radius: 0 6px 6px 0; background: var(--color-blue-50, #eff6ff); color: var(--color-slate-600, #475569); }
+  .analysis-vehicle-card { border-color: var(--color-slate-200, #e2e8f0); border-top: 3px solid var(--color-blue-100, #dbeafe); }
+  .bi-flow-modal-summary strong { color: var(--color-blue-600, #2563eb); }
+}
diff --git a/src/modules/assets/components/overview/FlowDateRangePicker.tsx b/src/modules/assets/components/overview/FlowDateRangePicker.tsx
index ed33dee..5118728 100644
--- a/src/modules/assets/components/overview/FlowDateRangePicker.tsx
+++ b/src/modules/assets/components/overview/FlowDateRangePicker.tsx
@@ -8,7 +8,7 @@ const parseDate = (value: string) => new Date(`${value}T12:00:00`);
 const shiftDay = (date: Date, offset: number) => new Date(date.getFullYear(), date.getMonth(), date.getDate() + offset);
 const dayCount = (start: string, end: string) => Math.round((Date.parse(`${end}T00:00:00Z`) - Date.parse(`${start}T00:00:00Z`)) / 86400000) + 1;
 
-export function FlowDateRangePicker({ value, onChange }: { value: DateRange; onChange: (range: DateRange) => void }) {
+export function FlowDateRangePicker({ value, onChange, dateLabel = '运维签章时间' }: { value: DateRange; onChange: (range: DateRange) => void; dateLabel?: string }) {
   const dialog = useRef<HTMLDialogElement>(null);
   const [draft, setDraft] = useState(value);
   const [selecting, setSelecting] = useState<'start' | 'end'>('start');
@@ -69,7 +69,7 @@ export function FlowDateRangePicker({ value, onChange }: { value: DateRange; onC
       className="mt-3 flex w-full items-center gap-3 rounded-2xl border border-slate-200 bg-white px-4 py-3 text-left shadow-sm transition hover:border-blue-300 hover:bg-blue-50/40 focus-visible:outline-2 focus-visible:outline-blue-500">
       <span className="flex h-9 w-9 shrink-0 items-center justify-center rounded-xl bg-blue-50 text-blue-600"><CalendarDays size={18} /></span>
       <span className="min-w-0 flex-1">
-        <span className="block text-[10px] font-medium text-slate-400">统计日期 · 运维签章时间</span>
+        <span className="block text-[10px] font-medium text-slate-400">统计日期 · {dateLabel}</span>
         <span className="mt-1 flex items-center gap-2 text-[13px] font-bold text-slate-700"><span>{value.start.replaceAll('-', '/')}</span><ArrowRight size={13} className="shrink-0 text-slate-300" /><span>{value.end.replaceAll('-', '/')}</span></span>
       </span>
       <span className="hidden rounded-lg bg-slate-100 px-2 py-1 text-[11px] font-medium text-slate-500 sm:block">{dayCount(value.start, value.end)} 天</span>
diff --git a/src/modules/assets/faults/FaultAnalysisLoading.tsx b/src/modules/assets/faults/FaultAnalysisLoading.tsx
new file mode 100644
index 0000000..20e6b4d
--- /dev/null
+++ b/src/modules/assets/faults/FaultAnalysisLoading.tsx
@@ -0,0 +1,16 @@
+/** Neutral placeholders communicate structure without suggesting partial statistics. */
+export function FaultAnalysisLoading() {
+  return <div className="fault-analysis-loading" role="status" aria-live="polite">
+    <div className="fault-loading-status">
+      <svg className="fault-loading-spinner" viewBox="0 0 32 32" aria-hidden="true">
+        {Array.from({ length: 12 }, (_, i) => <rect key={i} x="14.75" y="2" width="2.5" height="7" rx="1.25" fill="currentColor" transform={`rotate(${i * 30} 16 16)`} style={{ animationDelay: `${i / 12 - 1}s` }} />)}
+      </svg>
+      <span>正在加载故障数据…</span>
+    </div>
+    <div className="fault-loading-skeleton" aria-hidden="true">
+      <div className="fault-loading-controls"><span className="fault-loading-block fault-loading-title" /><div>{Array.from({ length: 6 }, (_, i) => <span className="fault-loading-block" key={i} />)}</div></div>
+      <div className="fault-loading-summary"><span className="fault-loading-block" /><span className="fault-loading-block" /></div>
+      <div className="fault-loading-table"><div className="fault-loading-table-head">{Array.from({ length: 3 }, (_, i) => <span className="fault-loading-block" key={i} />)}</div>{Array.from({ length: 5 }, (_, i) => <div className="fault-loading-row" key={i}><span className="fault-loading-block" /><span className="fault-loading-block" /><span className="fault-loading-block" /></div>)}</div>
+    </div>
+  </div>;
+}
diff --git a/src/modules/assets/faults/FaultAnalysisModal.tsx b/src/modules/assets/faults/FaultAnalysisModal.tsx
new file mode 100644
index 0000000..83db596
--- /dev/null
+++ b/src/modules/assets/faults/FaultAnalysisModal.tsx
@@ -0,0 +1,100 @@
+import { useEffect, useMemo, useRef, useState } from 'react';
+import { ArrowLeft, Search, Wrench, X } from 'lucide-react';
+import { fetchJson } from '../../../auth/api-client';
+import { FAULT_OVERVIEW_METRICS, type FaultAnalysisResponse, type FaultOverviewMetric } from '../../../shared/assets/faults';
+import { getDimensionValueLabel } from '../analytics-model';
+import { FAULT_CLOSURE_LABELS, FAULT_ANALYSIS_DIMENSIONS, FAULT_ANALYSIS_LABELS as DIMENSION_LABELS, analyzeFaultRecords, filterFaultRecords, faultDimensionValues, faultParentTotals, type FaultAnalysisDimension, type FaultAnalysisFilters, type FaultAnalysisGroup } from './analysis-model';
+import { dimensionRowSpans, orderDimensionGroups } from '../dimension-layout';
+import { FaultAnalysisLoading } from './FaultAnalysisLoading';
+import { DimensionPicker } from '../components/analysis/DimensionPicker';
+import { MobileAnalysisControls } from '../components/analysis/MobileAnalysisControls';
+import { MobileGroupedTable } from '../components/analysis/MobileGroupedTable';
+import { useDialogFocus } from '../components/useDialogFocus';
+import { useMobileLayout } from '../useMobileLayout';
+import '../components/analysis/asset-analysis.css';
+import '../components/analysis/mobile-analysis.css';
+
+const available = FAULT_ANALYSIS_DIMENSIONS;
+// Page-lifetime memory only: closing a modal retains settings; a full reload clears them.
+const analysisSettings = new Map<string, { dimensions: FaultAnalysisDimension[]; filters: FaultAnalysisFilters }>();
+export interface FaultAnalysisSource { url: string; title: string; periodLabel: string; definition?: string; defaultDimensions?: FaultAnalysisDimension[] }
+export function FaultAnalysisModal({ metric, onClose, source }: { metric: FaultOverviewMetric; onClose: () => void; source?: FaultAnalysisSource }) {
+  const ref = useRef<HTMLDivElement>(null);
+  useDialogFocus(true, ref, onClose);
+  const mobile = useMobileLayout();
+  const [data, setData] = useState<FaultAnalysisResponse | null>(null);
+  const [error, setError] = useState('');
+  const [revision, setRevision] = useState(0);
+  const defaultDimensions: FaultAnalysisDimension[] = source?.defaultDimensions || ['type'];
+  const settingsKey = source?.url || `overview:${metric}`;
+  const [dimensions, setDimensions] = useState<FaultAnalysisDimension[]>(() => analysisSettings.get(settingsKey)?.dimensions || defaultDimensions);
+  const [filters, setFilters] = useState<FaultAnalysisFilters>(() => analysisSettings.get(settingsKey)?.filters || {});
+  const [merged, setMerged] = useState(true);
+  const [sort, setSort] = useState<'count-desc' | 'count-asc' | 'label'>('count-desc');
+  const [group, setGroup] = useState<FaultAnalysisGroup | null>(null);
+  const [search, setSearch] = useState('');
+  const [limit, setLimit] = useState(50);
+  useEffect(() => {
+    const controller = new AbortController();
+    setError(''); setData(null);
+    fetchJson<FaultAnalysisResponse>(source?.url || `/api/asset-faults/analysis?metric=${metric}`, { signal: controller.signal })
+      .then(result => { if (!controller.signal.aborted) setData(result); }).catch(e => { if (!controller.signal.aborted) setError(e instanceof Error ? e.message : '加载失败'); });
+    return () => controller.abort();
+  }, [metric, revision, source?.url]);
+  const records = useMemo(() => data?.rows || [], [data]);
+  const handlerLabels = useMemo(() => new Map(records.flatMap(row => row.handlers.map(h => [h.value, h.label] as const))), [records]);
+  const label = (d: FaultAnalysisDimension, value: string) => d === 'plate' ? value : d === 'faultStatus' ? FAULT_CLOSURE_LABELS[value] || value : d === 'handler' ? handlerLabels.get(value) || '未指派' : d === 'customer' ? data?.customerLabels[value] || '未关联客户' : getDimensionValueLabel(d, value);
+  const options = available.map(key => {
+    const otherFilters = { ...filters }; delete otherFilters[key];
+    const counts = new Map<string, number>();
+    filterFaultRecords(records, otherFilters).forEach(row => faultDimensionValues(row, key).forEach(value => counts.set(value, (counts.get(value) || 0) + 1)));
+    // Keep applied selections removable even if another filter excludes them.
+    filters[key]?.forEach(value => { if (!counts.has(value)) counts.set(value, 0); });
+    return { key, label: DIMENSION_LABELS[key], options: [...counts].map(([value, count]) => ({ value, count, label: label(key, value) })).sort((a, b) => a.label.localeCompare(b.label, 'zh-CN')) };
+  });
+  const analysis = useMemo(() => analyzeFaultRecords(records, dimensions, filters), [records, dimensions, filters]);
+  const values = (row: FaultAnalysisGroup) => dimensions.map(d => row.values[d]!);
+  const ordered = orderDimensionGroups(analysis.rows, dimensions.length, values, row => row.count, sort,
+    (a, b, i) => label(dimensions[i], values(a)[i]).localeCompare(label(dimensions[i], values(b)[i]), 'zh-CN'));
+  const rows = ordered.slice(0, limit);
+  const spans = dimensionRowSpans(rows, dimensions.length, values);
+  const totals = faultParentTotals(ordered, dimensions);
+  const groupLabel = (row: FaultAnalysisGroup) => dimensions.map(d => label(d, row.values[d]!)).join(' · ') || '合计';
+  const apply = (dims: FaultAnalysisDimension[], nextFilters: FaultAnalysisFilters) => {
+    const saved = { dimensions: [...dims], filters: Object.fromEntries(Object.entries(nextFilters).filter(([, values]) => values?.length).map(([key, values]) => [key, [...values!]])) };
+    analysisSettings.set(settingsKey, saved);
+    setDimensions(saved.dimensions); setFilters(saved.filters); setLimit(50);
+  };
+  const reset = () => { analysisSettings.delete(settingsKey); setDimensions([...defaultDimensions]); setFilters({}); setLimit(50); };
+  const showDetails = (row: FaultAnalysisGroup) => { setGroup(row); setSearch(''); setLimit(50); };
+  const filterGroup = (row: FaultAnalysisGroup) => apply(dimensions, { ...filters, ...Object.fromEntries(dimensions.map(d => [d, [row.values[d]!]])) });
+  const groupIds = useMemo(() => new Set(group?.recordIds || []), [group]);
+  const details = group ? records.filter(row => groupIds.has(row.id) &&
+    `${row.code} ${row.plate} ${row.description} ${row.status} ${row.handlers.map(h => h.label).join(' ')}`.toLocaleLowerCase().includes(search.trim().toLocaleLowerCase()))
+    .sort((a, b) => (b.reportedAt || '').localeCompare(a.reportedAt || '') || b.id.localeCompare(a.id, undefined, { numeric: true })) : [];
+  return <div className="asset-analysis-overlay fault-analysis-overlay" onClick={e => { if (e.target === e.currentTarget) onClose(); }}>
+    <div className="asset-analysis-dialog fault-analysis-dialog" ref={ref} role="dialog" aria-modal="true" aria-labelledby="fault-analysis-title" tabIndex={-1}>
+      <header className="analysis-header"><div><h2 id="fault-analysis-title"><Wrench size={18} />{source?.title || FAULT_OVERVIEW_METRICS[metric]} · {group ? '故障明细' : '多维分析'}</h2><p>{source?.periodLabel || `${data?.date || '正在读取数据'} · ${metric !== 'reported' && metric !== 'closed' ? '全部日期' : '北京时间自然日'}`} · 按故障单统计</p></div><button onClick={onClose} aria-label="关闭故障分析"><X size={20} /></button></header>
+      <div className="analysis-scroll">
+        {error ? <div className="fault-message" role="alert">{error}<button onClick={() => setRevision(v => v + 1)}>重试</button></div> : !data ? <FaultAnalysisLoading /> : group ? <>
+          <div className="analysis-table-tools"><button className="analysis-button" onClick={() => { setGroup(null); setLimit(50); }}><ArrowLeft size={14} />返回分组</button><span>{groupLabel(group)} · {details.length.toLocaleString()} 单</span><label className="fault-detail-search"><Search size={14} /><input aria-label="搜索故障明细" placeholder="搜索单号、车牌、描述、处置人" value={search} onChange={e => { setSearch(e.target.value); setLimit(50); }} /></label></div>
+          <div className="analysis-group-table is-merged fault-detail-table"><table><thead><tr>{['车牌 / 故障单号', '运维处置人', '故障描述', '状态', '提报时间', '解决时间', '运营城市', '客户 / 部门'].map(h => <th key={h}>{h}</th>)}</tr></thead><tbody>{details.slice(0, limit).map(row => <tr key={row.id}><td><strong>{row.plate || '未关联车辆'}</strong><small>{row.code || '未编号'}</small></td><td>{row.handlers.map(h => h.label).join('、') || '未指派'}</td><td>{row.description || '—'}</td><td>{row.status}</td><td>{row.reportedAt || '—'}</td><td>{row.archivedAt || '—'}</td><td>{row.city}</td><td>{row.customerLabel}<small>{row.department}</small></td></tr>)}</tbody></table></div>
+          {!details.length && <p className="fault-empty">没有符合条件的故障明细</p>}
+          {details.length > limit && <button className="analysis-button fault-more" onClick={() => setLimit(v => v + 50)}>加载更多明细（已显示 {limit} / {details.length}）</button>}
+        </> : <>
+          {mobile ? <MobileAnalysisControls available={options} dimensions={dimensions} filters={filters} defaults={defaultDimensions} apply={(dims, next) => apply(dims as FaultAnalysisDimension[], next)} /> : <div className="analysis-builder"><div className="analysis-builder-heading"><h3>分析维度</h3><span>点击维度分组，展开箭头可多选筛选</span><button className="analysis-reset" onClick={reset}>重置</button></div><div className="analysis-dimension-options">{options.map(d => <DimensionPicker key={d.key} label={d.label} grouped={dimensions.includes(d.key)} order={dimensions.indexOf(d.key) + 1} options={d.options} selectedValues={filters[d.key]} onToggleGroup={() => apply(dimensions.includes(d.key) ? dimensions.filter(v => v !== d.key) : [...dimensions, d.key], filters)} onApplyFilter={selected => apply(dimensions, { ...filters, [d.key]: selected })} />)}<button aria-pressed={!dimensions.length} onClick={() => apply([], filters)}>仅汇总</button></div></div>}
+          <div className="analysis-result-bar"><span>当前结果<strong>{analysis.total.toLocaleString()}</strong>单</span><span>{analysis.rows.length.toLocaleString()} 个分组</span>{mobile && <button className="analysis-text-button" onClick={reset}>重置</button>}<button className="analysis-text-button" onClick={() => showDetails({ key: 'all', values: {}, count: analysis.total, share: 100, recordIds: filterFaultRecords(records, filters).map(row => row.id) })} disabled={dimensions.length > 0 || !analysis.total} hidden={dimensions.length > 0}>查看全部明细</button></div>
+          {dimensions.includes('handler') && <p className="fault-analysis-note">运维处置人来自故障或关联工单的当前处置分配。多人共同处置分别计入各人，总数和上级小计按故障去重，人员行不可直接相加。</p>}
+          <div className="analysis-table-tools">{!mobile && <h3>分组统计</h3>}<label>排序<select aria-label="分组排序" value={sort} onChange={e => { setSort(e.target.value as typeof sort); setLimit(50); }}><option value="count-desc">数量从多到少</option><option value="count-asc">数量从少到多</option><option value="label">名称顺序</option></select></label>{!mobile && dimensions.length > 1 && <label><input type="checkbox" checked={merged} onChange={e => setMerged(e.target.checked)} />合并单元格</label>}</div>
+          {mobile ? <MobileGroupedTable dimensions={dimensions.map(d => DIMENSION_LABELS[d])} rows={rows.map(row => ({ ...row, label: groupLabel(row), values: dimensions.map(d => label(d, row.values[d]!)) }))} unit="单" merged={merged} setMerged={setMerged} spans={spans} parentTotals={totals} onDetails={i => showDetails(rows[i])} onFilter={i => filterGroup(rows[i])} /> : <div className="analysis-group-table"><table><thead><tr>{dimensions.length ? dimensions.map(d => <th key={d}>{DIMENSION_LABELS[d]}</th>) : <th>范围</th>}<th>数量（单）</th><th>占比</th><th>操作</th></tr></thead><tbody>{rows.map((row, ri) => <tr key={row.key}>{dimensions.length ? dimensions.map((d, ci) => {
+            const span = merged ? spans[ri][ci] : 1;
+            return span ? <td key={d} rowSpan={span}>{label(d, row.values[d]!)}{merged && ci < dimensions.length - 1 && <small className="fault-parent-total">合计 {totals[ri][ci].toLocaleString()} 单</small>}</td> : null;
+          }) : <td>合计</td>}<td><strong>{row.count.toLocaleString()}</strong></td><td>{row.share.toFixed(1)}%</td><td>{dimensions.length > 0 && <button className="analysis-text-button" onClick={() => filterGroup(row)}>筛选此组</button>}<button className="analysis-text-button" onClick={() => showDetails(row)} aria-label={`查看明细 ${groupLabel(row)}`}>查看明细</button></td></tr>)}</tbody></table></div>}
+          {!rows.length && <p className="fault-empty">暂无符合条件的故障，可调整筛选条件。</p>}
+          {ordered.length > limit && <button className="analysis-button fault-more" onClick={() => setLimit(v => v + 50)}>加载更多分组（已显示 {limit} / {ordered.length}）</button>}
+          <p className="fault-analysis-note">{metric === 'overdue' && '逾期仅统计待处理、处理中且处置截止时间早于本次数据时间的故障；挂起停表，无截止时间不计入。'}{source ? source.definition || '按提报日期筛选同批故障，闭环状态截至本次数据时间；已归档为已闭环，其余为未闭环。' : '维度按车辆当前信息归属；本日解决按解决时间统计。'}下钻读取最新台账，实时变动可能与首页数量存在差异。</p>
+        </>}
+      </div>
+    </div>
+  </div>;
+}
diff --git a/src/modules/assets/faults/FaultManagement.tsx b/src/modules/assets/faults/FaultManagement.tsx
new file mode 100644
index 0000000..ddb472a
--- /dev/null
+++ b/src/modules/assets/faults/FaultManagement.tsx
@@ -0,0 +1,64 @@
+import { Fragment, useCallback, useEffect, useState } from 'react';
+import { ArrowUpRight, CheckCircle2, ClipboardList, Clock3, PlusCircle, RefreshCw } from 'lucide-react';
+import { fetchJson } from '../../../auth/api-client';
+import { FAULT_OVERVIEW_METRICS, type FaultOverview, type FaultOverviewMetric } from '../../../shared/assets/faults';
+import { FaultAnalysisModal } from './FaultAnalysisModal';
+import { FaultWeeklyReport } from './FaultWeeklyReport';
+import { FaultTrendCard } from './FaultTrendCard';
+import './fault-management.css';
+
+export const FAULT_DEFINITIONS = {
+  reported: '按今日提报时间统计', closed: '按今日解决时间统计',
+  open: '当前在办 = 待处理 + 处理中', ledger: '全部有效故障台账',
+};
+const icons = { reported: PlusCircle, closed: CheckCircle2, open: Clock3, ledger: ClipboardList };
+const metrics = ['reported', 'closed', 'open', 'ledger'] as const;
+export default function FaultManagement() {
+  const [data, setData] = useState<FaultOverview | null>(null);
+  const [error, setError] = useState('');
+  const [loading, setLoading] = useState(true);
+  const [revision, setRevision] = useState(0);
+  const [metric, setMetric] = useState<FaultOverviewMetric | null>(null);
+  const close = useCallback(() => setMetric(null), []);
+  useEffect(() => {
+    const controller = new AbortController();
+    setLoading(true); setError('');
+    fetchJson<FaultOverview>('/api/asset-faults/overview', { signal: controller.signal })
+      .then(setData).catch(e => { if (!controller.signal.aborted) setError(e instanceof Error ? e.message : '加载失败'); })
+      .finally(() => { if (!controller.signal.aborted) setLoading(false); });
+    return () => controller.abort();
+  }, [revision]);
+  return <div className="fault-page">
+    <header className="fault-page-header"><h1>羚牛氢能-故障管理</h1><div><span>{data ? `数据更新时间：${new Date(data.updatedAt).toLocaleString('zh-CN', { timeZone: 'Asia/Shanghai', hour12: false })}` : '正在读取故障台账'}</span><button aria-label="刷新故障统计" disabled={loading} onClick={() => setRevision(v => v + 1)}><RefreshCw size={14} className={loading ? 'animate-spin' : ''} />刷新</button></div></header>
+    {error && <div className="fault-message" role="alert">{error}<button onClick={() => setRevision(v => v + 1)}>重试</button></div>}
+    <section className="fault-summary" aria-label="故障总统计" aria-busy={loading}>
+      <div className="fault-summary-heading"><h2>故障数据实时汇总</h2><span>{data?.date || '—'} · 北京时间</span></div>
+      <div className="fault-metrics">{metrics.map(key => {
+        const Icon = icons[key];
+        return <article key={key} className={`fault-metric fault-metric-${key}`}><button className="fault-metric-main" disabled={!data || loading || !!error} onClick={() => setMetric(key)} aria-label={`${FAULT_OVERVIEW_METRICS[key]} ${data?.totals[key] ?? '加载中'} 单，查看分析`}>
+          <div className="fault-metric-label"><span className="fault-metric-icon"><Icon size={19} /></span><span>{FAULT_OVERVIEW_METRICS[key]}</span><ArrowUpRight size={15} /></div>
+          <div className="fault-metric-count"><strong>{loading ? '—' : data?.totals[key].toLocaleString('zh-CN') ?? '—'}</strong><span>单</span></div>
+          <p>{FAULT_DEFINITIONS[key]}</p><span className="fault-metric-link">查看分析与明细 →</span>
+        </button>
+          {key === 'open' && <>
+            <button className="fault-overdue-subset" disabled={!data || loading || !!error} onClick={() => setMetric('overdue')} aria-label={`其中逾期 ${data?.totals.overdue ?? '加载中'} 单，查看分析`}>
+              <span><span className="fault-overdue-prefix">其中</span>逾期</span><strong>{loading ? '—' : data?.totals.overdue?.toLocaleString('zh-CN') ?? '—'}</strong><small>单</small>
+            </button>
+            <div className="fault-open-breakdown" aria-label="当前在办等于待处理加处理中">
+              {(['waiting', 'processing'] as const).map((part, index) => <Fragment key={part}>
+                {index > 0 && <span className="fault-composition-plus" aria-hidden="true">＋</span>}
+                <button className={`fault-submetric fault-submetric-${part}`} disabled={!data || loading || !!error} onClick={() => setMetric(part)} aria-label={`${FAULT_OVERVIEW_METRICS[part]} ${data?.totals[part] ?? '加载中'} 单，查看分析`}>
+                  <span>{FAULT_OVERVIEW_METRICS[part]}</span><strong>{loading ? '—' : data?.totals[part]?.toLocaleString('zh-CN') ?? '—'}</strong>
+                </button>
+              </Fragment>)}
+            </div>
+          </>}
+        </article>;
+      })}</div>
+      <p className="fault-summary-note">当前在办 = 待处理 + 处理中，其中逾期不重复累加；按处置截止时间统计，挂起停表，未设置截止时间不计入逾期。</p>
+    </section>
+    <FaultTrendCard refresh={revision} />
+    <FaultWeeklyReport refresh={revision} />
+    {metric && <FaultAnalysisModal key={metric} metric={metric} onClose={close} />}
+  </div>;
+}
diff --git a/src/modules/assets/faults/FaultTrendCard.tsx b/src/modules/assets/faults/FaultTrendCard.tsx
new file mode 100644
index 0000000..4160129
--- /dev/null
+++ b/src/modules/assets/faults/FaultTrendCard.tsx
@@ -0,0 +1,70 @@
+import { useCallback, useEffect, useRef, useState } from 'react';
+import { CalendarDays, ChevronDown, RefreshCw } from 'lucide-react';
+import { Bar, BarChart, CartesianGrid, Legend, ResponsiveContainer, Tooltip, XAxis, YAxis } from 'recharts';
+import { fetchJson } from '../../../auth/api-client';
+import type { FaultTrendResponse, FaultTrendStatus } from '../../../shared/assets/faults';
+import { AnalysisExportButton } from '../components/analysis/AnalysisExportButton';
+import { downloadFaultReport } from './report-export';
+import { FlowDateRangePicker } from '../components/overview/FlowDateRangePicker';
+import { FaultAnalysisModal, type FaultAnalysisSource } from './FaultAnalysisModal';
+
+function initialRange() {
+  const end = new Date(Date.now() + 8 * 3600000).toISOString().slice(0, 10);
+  return { start: new Date(Date.parse(end) - 29 * 86400000).toISOString().slice(0, 10), end };
+}
+const statusLabels = { all: '新增故障', closed: '其中已闭环', unclosed: '其中未闭环' };
+const countKeys = { all: 'reported', closed: 'closed', unclosed: 'unclosed' } as const;
+export function FaultTrendCard({ refresh }: { refresh: number }) {
+  const [range, setRange] = useState(initialRange);
+  const [granularity, setGranularity] = useState<'day' | 'month'>('day');
+  const [data, setData] = useState<FaultTrendResponse | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState('');
+  const [revision, setRevision] = useState(0);
+  const [expanded, setExpanded] = useState(false);
+  const [source, setSource] = useState<FaultAnalysisSource | null>(null);
+  const chartRef = useRef<HTMLDivElement>(null);
+  const close = useCallback(() => setSource(null), []);
+  useEffect(() => {
+    const controller = new AbortController();
+    setLoading(true); setError(''); setData(null);
+    const params = new URLSearchParams({ ...range, granularity });
+    fetchJson<FaultTrendResponse>(`/api/asset-faults/trend?${params}`, { signal: controller.signal })
+      .then(result => { if (!controller.signal.aborted) setData(result); })
+      .catch(e => { if (!controller.signal.aborted) setError(e instanceof Error ? e.message : '加载失败'); })
+      .finally(() => { if (!controller.signal.aborted) setLoading(false); });
+    return () => controller.abort();
+  }, [range.start, range.end, granularity, revision, refresh]);
+  const drill = (status: FaultTrendStatus, period?: string) => {
+    if (!data || loading) return;
+    const params = new URLSearchParams({ start: data.start, end: data.end, granularity: data.granularity, status });
+    if (period) params.set('period', period);
+    setSource({ url: `/api/asset-faults/trend-analysis?${params}`, title: `故障处理趋势 · ${statusLabels[status]}`, defaultDimensions: ['handler', 'faultStatus'],
+      periodLabel: `${data.start} 至 ${data.end}${period ? ` · ${period}` : ''} · 按提报日期` });
+  };
+  return <section className="fault-trend fault-summary" aria-label="故障处理趋势" aria-busy={loading}>
+    <div className="fault-trend-heading"><h2><CalendarDays size={16} />故障处理趋势</h2><div className="fault-report-actions"><AnalysisExportButton disabled={loading || !data || !!error} onExport={() => data ? downloadFaultReport({ kind: 'trend', data }, chartRef.current?.querySelector<SVGSVGElement>('svg.recharts-surface[role=application]') || undefined) : undefined} /><div role="group" aria-label="趋势时间粒度">{(['day', 'month'] as const).map(value => <button key={value} aria-pressed={granularity === value} onClick={() => setGranularity(value)}>{value === 'day' ? '按日' : '按月'}</button>)}</div></div></div>
+    <p className="fault-trend-definition">按提报日期统计新增故障，展示这批故障截至当前的闭环情况。新增 = 已闭环 + 未闭环。点击柱内色块，可按运维处置人、故障工单状态查看对应日期的故障。</p>
+    <FlowDateRangePicker dateLabel="故障提报时间" value={range} onChange={setRange} />
+    {error ? <div className="fault-message" role="alert">故障趋势加载失败，请稍后重试。<button onClick={() => setRevision(v => v + 1)}>重试</button></div> : loading || !data ? <div className="fault-trend-loading" role="status"><RefreshCw size={16} className="animate-spin" />正在加载故障趋势…</div> : <>
+      <div className="fault-trend-totals">{(['all', 'closed', 'unclosed'] as const).map(status => <button key={status} className={`fault-trend-${status}`} disabled={!data.totals[countKeys[status]]} onClick={() => drill(status)} aria-label={`${statusLabels[status]} ${data.totals[countKeys[status]]} 单，查看趋势分析`}><strong>{data.totals[countKeys[status]].toLocaleString()}</strong><span>{statusLabels[status]} ↗</span></button>)}</div>
+      {data.totals.reported ? <div ref={chartRef} className="fault-trend-chart" role="region" aria-label={`故障${granularity === 'day' ? '日' : '月'}趋势堆叠柱图，新增${data.totals.reported}单，已闭环${data.totals.closed}单，未闭环${data.totals.unclosed}单；精确数量可展开统计表查看`}>
+        <ResponsiveContainer width="100%" height={240} minWidth={0}>
+          <BarChart data={data.periods} margin={{ top: 12, right: 8, left: -18, bottom: 0 }} accessibilityLayer>
+            <CartesianGrid strokeDasharray="4 6" vertical={false} stroke="#e8edf3" />
+            <XAxis dataKey="period" tick={{ fontSize: 10, fill: '#64748b' }} tickFormatter={v => data.granularity === 'day' ? v.slice(5) : v} minTickGap={24} axisLine={false} tickLine={false} />
+            <YAxis allowDecimals={false} tick={{ fontSize: 10, fill: '#64748b' }} axisLine={false} tickLine={false} />
+            <Tooltip cursor={{ fill: '#f1f5f9', opacity: 0.7 }} contentStyle={{ border: '1px solid #e2e8f0', borderRadius: 12, boxShadow: '0 8px 24px rgb(15 23 42 / .08)', fontSize: 12 }} labelFormatter={(_, payload) => { const point = payload?.[0]?.payload; return point ? `${point.period} · 新增 ${point.reported} 单` : ''; }} formatter={(value, name) => [`${value} 单`, name]} />
+            <Legend iconType="circle" iconSize={8} wrapperStyle={{ fontSize: 11 }} />
+            <Bar dataKey="closed" name="已闭环" cursor="pointer" onClick={bar => { const period = data.periods.find(row => row.period === bar.payload?.period); if (period?.closed) drill('closed', period.period); }} fill="#10b981" stackId="faults" maxBarSize={34} isAnimationActive={false} />
+            <Bar dataKey="unclosed" name="未闭环" cursor="pointer" onClick={bar => { const period = data.periods.find(row => row.period === bar.payload?.period); if (period?.unclosed) drill('unclosed', period.period); }} fill="#f59e0b" stackId="faults" maxBarSize={34} isAnimationActive={false} />
+          </BarChart>
+        </ResponsiveContainer>
+      </div> : <p className="fault-empty">所选时间范围暂无新增故障</p>}
+      <button className="fault-trend-expand" aria-expanded={expanded} aria-controls="fault-trend-periods" onClick={() => setExpanded(v => !v)}><span>{expanded ? '收起' : '展开'}{data.granularity === 'day' ? '每日' : '每月'}统计 · 点击数量查看故障闭环明细</span><ChevronDown size={16} style={{ transform: expanded ? 'rotate(180deg)' : undefined }} /></button>
+      {expanded && <div id="fault-trend-periods" className="fault-trend-table"><table><thead><tr><th>{data.granularity === 'day' ? '提报日期' : '提报月份'}</th><th>新增</th><th>已闭环</th><th>未闭环</th><th>闭环率</th></tr></thead><tbody>{[...data.periods].reverse().map(row => <tr key={row.period}><td>{row.period}</td>{(['all', 'closed', 'unclosed'] as const).map(status => <td key={status}><button disabled={!row[countKeys[status]]} onClick={() => drill(status, row.period)} aria-label={`${row.period} ${statusLabels[status]} ${row[countKeys[status]]} 单，查看明细`}>{row[countKeys[status]].toLocaleString()}</button></td>)}<td>{row.reported ? `${(row.closed / row.reported * 100).toFixed(1)}%` : '—'}</td></tr>)}</tbody></table></div>}
+      <p className="fault-summary-note">已归档视为已闭环，其余状态（含挂起）为未闭环；无提报时间不纳入趋势。按月仍仅统计所选日期范围，不扩展至整月。状态截至 {new Date(data.updatedAt).toLocaleString('zh-CN', { timeZone: 'Asia/Shanghai', hour12: false })}。</p>
+    </>}
+    {source && <FaultAnalysisModal key={source.url} metric="ledger" source={source} onClose={close} />}
+  </section>;
+}
diff --git a/src/modules/assets/faults/FaultWeeklyReport.tsx b/src/modules/assets/faults/FaultWeeklyReport.tsx
new file mode 100644
index 0000000..b9d1cb9
--- /dev/null
+++ b/src/modules/assets/faults/FaultWeeklyReport.tsx
@@ -0,0 +1,65 @@
+import { useCallback, useEffect, useRef, useState } from 'react';
+import { ClipboardList, RefreshCw } from 'lucide-react';
+import { CartesianGrid, Line, LineChart, ResponsiveContainer, Tooltip, XAxis, YAxis } from 'recharts';
+import { fetchJson } from '../../../auth/api-client';
+import { FAULT_WEEKLY_METRICS, type FaultWeeklyMetric, type FaultWeeklyResponse } from '../../../shared/assets/faults';
+import { AnalysisExportButton } from '../components/analysis/AnalysisExportButton';
+import { downloadFaultReport } from './report-export';
+import { FlowDateRangePicker } from '../components/overview/FlowDateRangePicker';
+import { getWeeklyFlowRange } from '../model';
+import { FaultAnalysisModal, type FaultAnalysisSource } from './FaultAnalysisModal';
+
+const metrics: FaultWeeklyMetric[] = ['reported', 'closed'];
+const definition = '新增故障按提报时间统计，解决故障按解决时间统计；同一故障可在不同日期分别计入两个指标。';
+export function FaultWeeklyReport({ refresh }: { refresh: number }) {
+  const [range, setRange] = useState(() => getWeeklyFlowRange());
+  const [data, setData] = useState<FaultWeeklyResponse | null>(null);
+  const [error, setError] = useState('');
+  const [loading, setLoading] = useState(true);
+  const [revision, setRevision] = useState(0);
+  const [source, setSource] = useState<FaultAnalysisSource | null>(null);
+  const chartRef = useRef<HTMLDivElement>(null);
+  const close = useCallback(() => setSource(null), []);
+  const today = new Date(Date.now() + 8 * 3600000).toISOString().slice(0, 10);
+  useEffect(() => {
+    const controller = new AbortController();
+    setLoading(true); setData(null); setError('');
+    fetchJson<FaultWeeklyResponse>(`/api/asset-faults/weekly-report?${new URLSearchParams({ start: range.start, end: range.end })}`, { signal: controller.signal })
+      .then(result => { if (!controller.signal.aborted) setData(result); })
+      .catch(e => { if (!controller.signal.aborted) setError(e instanceof Error ? e.message : '加载失败'); })
+      .finally(() => { if (!controller.signal.aborted) setLoading(false); });
+    return () => controller.abort();
+  }, [range.start, range.end, revision, refresh]);
+  const drill = (metric: FaultWeeklyMetric, day?: string) => {
+    if (!data || loading) return;
+    const params = new URLSearchParams({ start: data.start, end: data.end, metric });
+    if (day) params.set('day', day);
+    setSource({ url: `/api/asset-faults/weekly-report-analysis?${params}`, title: `故障运维周报 · ${FAULT_WEEKLY_METRICS[metric]}`,
+      periodLabel: `${day || `${data.start} 至 ${data.end}`} · 按事件发生时间`, definition });
+  };
+  return <section className="fault-weekly fault-trend fault-summary" aria-label="故障运维周报" aria-busy={loading}>
+    <div className="fault-trend-heading"><h2><ClipboardList size={16} />故障运维周报</h2><div className="fault-report-actions"><span className="fault-weekly-unit">单位：单</span><AnalysisExportButton disabled={loading || !data || !!error} onExport={() => data ? downloadFaultReport({ kind: 'weekly', data }, chartRef.current?.querySelector<SVGSVGElement>('svg.recharts-surface[role=application]') || undefined) : undefined} /></div></div>
+    <p className="fault-trend-definition">按日展示新增故障和解决故障。默认业务周为周六至周五，可自选日期。</p>
+    <FlowDateRangePicker dateLabel="提报 / 解决时间" value={range} onChange={setRange} />
+    {error ? <div className="fault-message" role="alert">故障运维周报加载失败，请稍后重试。<button onClick={() => setRevision(v => v + 1)}>重试</button></div> : loading || !data ? <div className="fault-trend-loading" role="status"><RefreshCw size={16} className="animate-spin" />正在加载故障运维周报…</div> : <>
+      <div className="fault-trend-totals">{metrics.map(metric => <button key={metric} className={`fault-weekly-${metric}`} disabled={!data.totals[metric]} onClick={() => drill(metric)} aria-label={`周报${FAULT_WEEKLY_METRICS[metric]} ${data.totals[metric]} 单，查看分析`}><strong>{data.totals[metric].toLocaleString()}</strong><span>{FAULT_WEEKLY_METRICS[metric]} ↗</span></button>)}</div>
+      <div ref={chartRef} className="fault-trend-chart fault-weekly-chart" role="region" aria-label="每日新增故障与解决故障折线图，精确数量及下钻见下方每日统计表">
+        <div className="fault-chart-heading"><span>每日变化<small>单位：单</small></span><div className="fault-chart-legend" aria-label="图例"><span className="fault-chart-key-reported"><i />新增故障</span><span className="fault-chart-key-closed"><i />解决故障</span></div></div>
+        <ResponsiveContainer width="100%" height={240} minWidth={0}>
+          <LineChart data={data.days} margin={{ top: 20, right: 14, left: 0, bottom: 8 }} accessibilityLayer>
+            <CartesianGrid strokeDasharray="4 6" vertical={false} stroke="#e8edf3" />
+            <XAxis dataKey="date" tick={{ fontSize: 10, fill: '#64748b' }} tickFormatter={v => v.slice(5)} minTickGap={32} tickMargin={12} padding={{ left: 12, right: 12 }} axisLine={false} tickLine={false} />
+            <YAxis width={30} tickMargin={8} tickCount={5} domain={[0, 'auto']} allowDecimals={false} tick={{ fontSize: 10, fill: '#64748b' }} axisLine={false} tickLine={false} />
+            <Tooltip cursor={{ stroke: '#cbd5e1', strokeDasharray: '4 4' }} contentStyle={{ border: '1px solid #e2e8f0', borderRadius: 12, boxShadow: '0 8px 24px rgb(15 23 42 / .08)', padding: '10px 14px', fontSize: 12 }} labelStyle={{ color: '#334155', fontWeight: 600, marginBottom: 6 }} formatter={(value, name) => [`${value} 单`, name]} />
+            <Line type="monotone" dataKey="reported" name="新增故障" stroke="#2563eb" strokeWidth={2.5} dot={data.days.length <= 14 ? { r: 3.5, fill: '#fff', strokeWidth: 2 } : false} activeDot={{ r: 6, stroke: '#fff', strokeWidth: 3 }} isAnimationActive={false} />
+            <Line type="monotone" dataKey="closed" name="解决故障" stroke="#059669" strokeWidth={2.5} dot={data.days.length <= 14 ? { r: 3.5, fill: '#059669', stroke: '#fff', strokeWidth: 1.5 } : false} activeDot={{ r: 6, stroke: '#fff', strokeWidth: 3 }} isAnimationActive={false} />
+          </LineChart>
+        </ResponsiveContainer>
+      </div>
+      <div className="fault-trend-table fault-weekly-table" role="region" aria-label="故障运维每日统计表" tabIndex={0}><table><thead><tr><th>日期</th>{metrics.map(metric => <th key={metric}>{FAULT_WEEKLY_METRICS[metric]}</th>)}</tr></thead><tbody>{[...data.days].reverse().map(row => <tr key={row.date} className={row.date === today ? 'fault-weekly-today' : undefined} aria-current={row.date === today ? 'date' : undefined}><td><span className="fault-weekly-date">{row.date}{row.date === today && <span className="fault-today-label">今天</span>}</span><small>{new Date(`${row.date}T12:00:00+08:00`).toLocaleDateString('zh-CN', { weekday: 'short', timeZone: 'Asia/Shanghai' })}</small></td>{metrics.map(metric => <td key={metric}><button className={`fault-weekly-${metric}`} disabled={!row[metric]} onClick={() => drill(metric, row.date)} aria-label={`${row.date} ${FAULT_WEEKLY_METRICS[metric]} ${row[metric]} 单，查看明细`}>{row[metric].toLocaleString()}</button></td>)}</tr>)}</tbody><tfoot><tr><th>合计</th>{metrics.map(metric => <th key={metric}><button disabled={!data.totals[metric]} onClick={() => drill(metric)} aria-label={`合计${FAULT_WEEKLY_METRICS[metric]} ${data.totals[metric]} 单，查看明细`}>{data.totals[metric].toLocaleString()}</button></th>)}</tr></tfoot></table></div>
+      {!metrics.some(metric => data.totals[metric]) && <p className="fault-weekly-empty">所选日期范围暂无新增或解决故障。</p>}
+      <p className="fault-summary-note">新增故障按提报日期，解决故障按解决日期统计，不受提报日期限制。数据时间：{new Date(data.updatedAt).toLocaleString('zh-CN', { timeZone: 'Asia/Shanghai', hour12: false })}。</p>
+    </>}
+    {source && <FaultAnalysisModal key={source.url} metric="ledger" source={source} onClose={close} />}
+  </section>;
+}
diff --git a/src/modules/assets/faults/analysis-model.test.ts b/src/modules/assets/faults/analysis-model.test.ts
new file mode 100644
index 0000000..08e9991
--- /dev/null
+++ b/src/modules/assets/faults/analysis-model.test.ts
@@ -0,0 +1,77 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { mapFault, faultHandlers } from '../../../server/routes/asset-faults/model.js';
+import type { FaultAnalysisRecord, FaultOption } from '../../../shared/assets/faults';
+import { analyzeFaultRecords, filterFaultRecords, faultDimensionValues, faultParentTotals, FAULT_ANALYSIS_DIMENSIONS, FAULT_ANALYSIS_LABELS } from './analysis-model.js';
+function fault(id: string, handlers: FaultOption[], manager = '客户业务经理', city = '上海市'): FaultAnalysisRecord {
+  const row = mapFault({ id, business_manager: manager, city_name: city }, new Map());
+  return { ...row, handlers, cell: row.assetCell };
+}
+const a = { value: 'id:1234567890123456789', label: '处置甲' };
+const b = { value: 'id:2234567890123456789', label: '处置乙' };
+const data = [fault('shared', [a, b, a]), fault('single', [a]), fault('none', [])];
+
+test('运维处置人是独立维度，未分配不以业务负责人兜底', () => {
+  assert.ok(FAULT_ANALYSIS_DIMENSIONS.includes('handler')); assert.ok(FAULT_ANALYSIS_DIMENSIONS.includes('manager'));
+  assert.equal(FAULT_ANALYSIS_LABELS.handler, '运维处置人');
+  assert.deepEqual(faultDimensionValues(data[0], 'handler'), [a.value, b.value]);
+  assert.deepEqual(faultDimensionValues(data[0], 'manager'), ['客户业务经理']);
+  assert.deepEqual(faultDimensionValues(data[2], 'handler'), ['unassigned']);
+  assert.deepEqual(faultHandlers({ business_manager: '客户业务经理' }, new Map()), [{ value: 'unassigned', label: '未指派' }]);
+});
+test('多人各自成组，总数和组内明细按故障ID去重，父级小计取并集', () => {
+  const result = analyzeFaultRecords([...data, data[0]], ['city', 'handler']);
+  assert.equal(result.total, 3);
+  assert.equal(result.rows.find(row => row.values.handler === a.value)?.count, 2);
+  assert.equal(result.rows.find(row => row.values.handler === b.value)?.count, 1);
+  assert.equal(result.rows.reduce((n, row) => n + row.count, 0), 4);
+  assert.ok(faultParentTotals(result.rows, ['city', 'handler']).every(row => row[0] === 3));
+  for (const group of result.rows) assert.equal(new Set(group.recordIds).size, group.count);
+});
+test('多选处置人取并集，不分组时不放大；筛选甲后不出现共享故障的乙分组', () => {
+  assert.equal(filterFaultRecords(data, { handler: [a.value, b.value] }).length, 2);
+  assert.equal(analyzeFaultRecords(data, ['city'], { handler: [a.value, b.value] }).rows[0].count, 2);
+  const result = analyzeFaultRecords(data, ['handler'], { handler: [a.value] });
+  assert.equal(result.total, 2); assert.equal(result.rows.length, 1); assert.equal(result.rows[0].values.handler, a.value);
+  assert.equal(filterFaultRecords(data, { handler: [a.value], manager: ['其他业务经理'] }).length, 0);
+  assert.equal(filterFaultRecords(data, { handler: ['unassigned'] })[0].id, 'none');
+});
+test('同名处置人保持ID独立，组合筛选与组明细对应，空数据安全', () => {
+  const rows = [fault('one', [{ ...a, label: '同名' }]), fault('two', [{ ...b, label: '同名' }])];
+  const result = analyzeFaultRecords(rows, ['manager', 'handler']);
+  assert.equal(result.rows.length, 2);
+  for (const group of result.rows) {
+    const matched = filterFaultRecords(rows, { manager: [group.values.manager!], handler: [group.values.handler!] });
+    assert.deepEqual(matched.map(row => row.id), group.recordIds);
+  }
+  assert.deepEqual(analyzeFaultRecords([], ['handler']), { total: 0, rows: [] });
+});
+
+
+test('故障工单状态按归档闭环，与车辆运营状态独立；组合分组、筛选和去重口径一致', () => {
+  const states = ['已归档', '待处理', '处理中', '挂起', '未知状态'];
+  const rows = states.map((status, i) => ({ ...fault(String(i), i === 0 ? [a, b] : [a]), status }));
+  assert.deepEqual(rows.map(row => faultDimensionValues(row, 'faultStatus')), [['closed'], ['unclosed'], ['unclosed'], ['unclosed'], ['unclosed']]);
+  const result = analyzeFaultRecords(rows, ['handler', 'faultStatus']);
+  assert.equal(result.total, 5);
+  assert.equal(result.rows.find(row => row.values.handler === a.value && row.values.faultStatus === 'closed')?.count, 1);
+  assert.equal(result.rows.find(row => row.values.handler === a.value && row.values.faultStatus === 'unclosed')?.count, 4);
+  const parentTotals = faultParentTotals(result.rows, ['handler', 'faultStatus']);
+  result.rows.forEach((row, i) => assert.equal(parentTotals[i][0], row.values.handler === a.value ? 5 : 1));
+  assert.deepEqual(filterFaultRecords(rows, { faultStatus: ['closed'], handler: [a.value, b.value] }).map(row => row.id), ['0']);
+  assert.equal(filterFaultRecords(rows, { faultStatus: ['closed', 'unclosed'] }).length, 5);
+  assert.deepEqual(filterFaultRecords(rows, { faultStatus: ['unclosed'], handler: [b.value] }), []);
+  for (const group of result.rows) assert.deepEqual(filterFaultRecords(rows, { handler: [group.values.handler!], faultStatus: [group.values.faultStatus!] }).map(row => row.id), group.recordIds);
+});
+
+
+test('车牌位于第三个维度，同车多故障按单计数，支持组合筛选和缺失车牌', () => {
+  assert.equal(FAULT_ANALYSIS_DIMENSIONS[2], 'plate');
+  const rows = [{ ...fault('1', [a]), plate: '沪A12345' }, { ...fault('2', [b]), plate: '沪A12345' }, { ...fault('3', [a]), plate: '粤A12345' }, { ...fault('4', []), plate: '' }];
+  const grouped = analyzeFaultRecords(rows, ['plate']);
+  assert.equal(grouped.total, 4);
+  assert.equal(grouped.rows.find(row => row.values.plate === '沪A12345')?.count, 2);
+  assert.deepEqual(filterFaultRecords(rows, { plate: ['沪A12345'], handler: [b.value] }).map(row => row.id), ['2']);
+  assert.equal(filterFaultRecords(rows, { plate: ['沪A12345', '粤A12345'] }).length, 3);
+  assert.deepEqual(filterFaultRecords(rows, { plate: ['未关联车辆'] }).map(row => row.id), ['4']);
+});
diff --git a/src/modules/assets/faults/analysis-model.ts b/src/modules/assets/faults/analysis-model.ts
new file mode 100644
index 0000000..2a60299
--- /dev/null
+++ b/src/modules/assets/faults/analysis-model.ts
@@ -0,0 +1,50 @@
+import type { AssetAnalysisDimension } from '../../../shared/assets/analytics';
+import type { FaultAnalysisRecord } from '../../../shared/assets/faults';
+import { DIMENSION_LABELS, getAvailableDimensions } from '../analytics-model';
+
+export type FaultAnalysisDimension = AssetAnalysisDimension | 'handler' | 'plate' | 'faultStatus';
+export type FaultAnalysisFilters = Partial<Record<FaultAnalysisDimension, string[]>>;
+export const FAULT_ANALYSIS_DIMENSIONS: FaultAnalysisDimension[] = getAvailableDimensions('assets').flatMap(d => d === 'type' ? [d, 'handler', 'plate', 'faultStatus'] : [d]);
+export const FAULT_ANALYSIS_LABELS = { ...DIMENSION_LABELS, handler: '运维处置人', plate: '车牌', faultStatus: '故障工单状态' };
+export const FAULT_CLOSURE_LABELS: Record<string, string> = { closed: '已闭环', unclosed: '未闭环' };
+export interface FaultAnalysisGroup {
+  key: string; values: Partial<Record<FaultAnalysisDimension, string>>;
+  count: number; share: number; recordIds: string[];
+}
+export function faultDimensionValues(row: FaultAnalysisRecord, dimension: FaultAnalysisDimension): string[] {
+  if (dimension === 'plate') return [row.plate?.trim() || '未关联车辆'];
+  if (dimension === 'faultStatus') return [row.status === '已归档' ? 'closed' : 'unclosed'];
+  return dimension === 'handler' ? [...new Set(row.handlers.length ? row.handlers.map(h => h.value) : ['unassigned'])] : [row.cell[dimension]];
+}
+export function filterFaultRecords(rows: FaultAnalysisRecord[], filters: FaultAnalysisFilters = {}): FaultAnalysisRecord[] {
+  return [...new Map(rows.filter(row => FAULT_ANALYSIS_DIMENSIONS.every(d => !filters[d]?.length || faultDimensionValues(row, d).some(value => filters[d]!.includes(value)))).map(row => [row.id, row])).values()];
+}
+/** Expand only the grouped handler dimension; totals and each group remain distinct fault IDs. */
+export function analyzeFaultRecords(rows: FaultAnalysisRecord[], dimensions: FaultAnalysisDimension[], filters: FaultAnalysisFilters = {}) {
+  const selected = filterFaultRecords(rows, filters);
+  const groups = new Map<string, { values: FaultAnalysisGroup['values']; ids: Set<string> }>();
+  const validDimensions = [...new Set(dimensions.filter(d => FAULT_ANALYSIS_DIMENSIONS.includes(d)))];
+  for (const row of selected) {
+    let combinations: [FaultAnalysisDimension, string][][] = [[]];
+    for (const d of validDimensions) {
+      const values = faultDimensionValues(row, d).filter(value => !filters[d]?.length || filters[d]!.includes(value));
+      combinations = combinations.flatMap(parts => values.map(value => [...parts, [d, value] as [FaultAnalysisDimension, string]]));
+    }
+    for (const entries of combinations) {
+      const key = JSON.stringify(entries);
+      const group = groups.get(key) || { values: Object.fromEntries(entries), ids: new Set<string>() };
+      group.ids.add(row.id); groups.set(key, group);
+    }
+  }
+  return { total: selected.length, rows: [...groups].map(([key, group]): FaultAnalysisGroup => ({ key, values: group.values,
+    count: group.ids.size, share: selected.length ? group.ids.size / selected.length * 100 : 0, recordIds: [...group.ids] })) };
+}
+/** Multi-handler child rows overlap: parent subtotals must use the union, never sum children. */
+export function faultParentTotals(rows: FaultAnalysisGroup[], dimensions: FaultAnalysisDimension[]): number[][] {
+  const totals = new Map<string, Set<string>>();
+  const keys = rows.map(row => dimensions.slice(0, -1).map((_, depth) => JSON.stringify(dimensions.slice(0, depth + 1).map(d => row.values[d]))));
+  rows.forEach((row, i) => keys[i].forEach(key => {
+    const ids = totals.get(key) || new Set<string>(); row.recordIds.forEach(id => ids.add(id)); totals.set(key, ids);
+  }));
+  return keys.map(row => row.map(key => totals.get(key)!.size));
+}
diff --git a/src/modules/assets/faults/fault-management.css b/src/modules/assets/faults/fault-management.css
new file mode 100644
index 0000000..870e235
--- /dev/null
+++ b/src/modules/assets/faults/fault-management.css
@@ -0,0 +1,221 @@
+.fault-page { color:#334155; min-width:0; padding:24px; }
+.fault-page-header { position:relative; z-index:30; margin:-24px -24px 24px; padding:18px 24px 12px; background:rgb(255 255 255 / .95); border-bottom:1px solid #f1f5f9; text-align:center; }
+.fault-page-header h1 { font-size:16px; font-weight:600; letter-spacing:.04em; color:#1f2937; }
+.fault-page-header>div { display:flex; justify-content:center; align-items:center; flex-wrap:wrap; gap:12px; margin-top:9px; font-size:10px; color:#94a3b8; }
+.fault-page-header button { display:inline-flex; align-items:center; gap:4px; color:#64748b; cursor:pointer; padding:4px; }
+.fault-summary { background:white; border:1px solid #f1f5f9; border-radius:16px; padding:20px; box-shadow:0 1px 3px rgb(15 23 42 / .02); }
+.fault-summary-heading { display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom:20px; }
+.fault-summary-heading h2 { font-size:14px; font-weight:600; color:#1e293b; }
+.fault-summary-heading>span { color:#94a3b8; font-size:11px; }
+.fault-metrics { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:16px; align-items:start; }
+.fault-metric { text-align:left; padding:0; border:1px solid #e2e8f0; background:#fff; border-radius:12px; transition:border-color .15s,box-shadow .15s; min-width:0; }
+.fault-metric:hover:not(:disabled) { border-color:#93c5fd; box-shadow:0 4px 12px rgb(37 99 235 / .06); }
+.fault-metric-main:focus-visible { outline:2px solid #2563eb; outline-offset:3px; }
+.fault-metric-main:disabled { cursor:default; opacity:.6; }
+.fault-metric-label { display:flex; align-items:center; gap:9px; font-size:13px; font-weight:500; }
+.fault-metric-label>svg { margin-left:auto; color:#94a3b8; }
+.fault-metric-icon { display:flex; align-items:center; justify-content:center; width:34px; height:34px; border-radius:9px; background:#eff6ff; color:#2563eb; flex-shrink:0; }
+.fault-metric-closed .fault-metric-icon { background:#ecfdf5; color:#059669; }
+.fault-metric-open .fault-metric-icon { background:#fff7ed; color:#d97706; }
+.fault-metric-ledger .fault-metric-icon { background:#f5f3ff; color:#7c3aed; }
+.fault-metric-count { display:flex; align-items:baseline; gap:8px; margin:18px 0 10px; }
+.fault-metric-count strong { font-size:32px; line-height:1.15; font-weight:650; color:#0f172a; font-variant-numeric:tabular-nums; }
+.fault-metric-count>span { font-size:11px; color:#94a3b8; }
+.fault-metric p { font-size:11px; color:#94a3b8; line-height:1.6; min-height:35px; }
+.fault-metric-link { display:block; font-size:11px; color:#3b82f6; margin-top:12px; }
+.fault-message { margin:12px 0; padding:14px; border:1px solid #fecaca; background:#fef2f2; border-radius:8px; color:#b91c1c; font-size:12px; }
+.fault-message button { margin-left:12px; text-decoration:underline; cursor:pointer; }
+.fault-parent-total,.fault-detail-table small { display:block; margin-top:5px; font-size:11px; color:#94a3b8; }
+.fault-detail-table table { min-width:1100px; }
+.fault-detail-table td:first-child { white-space:nowrap; }
+.fault-detail-table td:first-child strong { color:#1e293b; font-weight:600; }
+.fault-detail-table td:nth-child(2) { min-width:100px; max-width:180px; white-space:normal; overflow-wrap:anywhere; }
+.fault-detail-table td:nth-child(3) { min-width:180px; max-width:320px; white-space:normal; overflow-wrap:anywhere; }
+.fault-detail-search { display:flex; gap:6px; border:1px solid #e2e8f0; padding:8px; border-radius:6px; }
+.fault-detail-search input { min-width:0; width:220px; outline:none; }
+.fault-empty { text-align:center; padding:32px; color:#94a3b8; }
+.fault-analysis-note { margin-top:16px; color:#94a3b8; font-size:11px; line-height:1.7; }
+.fault-analysis-dialog .analysis-dimension-options { align-items:flex-start; }
+.fault-more { display:flex; margin:16px auto; }
+@media(max-width:1100px) { .fault-metrics { grid-template-columns:repeat(2,minmax(0,1fr)); } }
+@media(max-width:767px) {
+ .fault-page { padding:12px; }
+ .fault-page-header { position:relative; z-index:30; margin:-12px -12px 16px; padding:14px 12px 10px; }
+ .fault-page-header h1 { font-size:15px; }
+ .fault-summary { padding:14px; border-radius:12px; }
+ .fault-summary-heading { align-items:flex-start; flex-direction:column; gap:6px; margin-bottom:14px; }
+ .fault-metrics { gap:10px; }
+ .fault-metric { padding:0; border-radius:10px; }
+ .fault-metric-label { font-size:12px; gap:6px; }
+ .fault-metric-icon { width:28px; height:28px; }
+ .fault-metric-label>svg { display:none; }
+ .fault-metric-count strong { font-size:29px; }
+ .fault-metric p { font-size:10px; }
+ .fault-detail-search { width:100%; }
+ .fault-detail-search input { width:100%; }
+}
+
+.fault-metric-main { display:block; width:100%; padding:18px; text-align:left; cursor:pointer; border-radius:12px; }
+/* Fixed compact height keeps every metric aligned, including the open-work breakdown. */
+.fault-metric { height:164px; display:flex; flex-direction:column; }
+.fault-metric-main { flex:1; min-height:0; display:flex; flex-direction:column; padding:12px 14px; }
+.fault-metric-label { width:100%; }
+.fault-metric-icon { width:28px; height:28px; border-radius:7px; }
+.fault-metric-count { margin:8px 0 5px; }
+.fault-metric-count strong { font-size:28px; }
+.fault-metric p { min-height:0; font-size:10px; }
+.fault-metric-link { margin-top:auto; padding-top:6px; font-size:10px; }
+.fault-metric-open { position:relative; }
+.fault-metric-open .fault-metric-main>p,.fault-metric-open .fault-metric-link { display:none; }
+.fault-open-breakdown { display:flex; align-items:center; gap:4px; margin:0 12px 12px; padding-top:8px; border-top:1px solid #f1f5f9; }
+.fault-submetric { flex:1; min-width:0; display:flex; flex-direction:column; align-items:center; gap:2px; padding:4px 2px; border-radius:5px; font-size:10px; cursor:pointer; color:#64748b; }
+.fault-submetric:hover { background:#eff6ff; color:#2563eb; }
+.fault-submetric:focus-visible { outline:2px solid #2563eb; outline-offset:1px; }
+.fault-submetric:disabled { opacity:.6; cursor:default; }
+.fault-submetric strong { font-variant-numeric:tabular-nums; font-size:16px; line-height:1.2; color:#334155; }
+.fault-submetric svg { display:none; }
+.fault-composition-plus { color:#94a3b8; font-size:18px; font-weight:400; }
+.fault-submetric-waiting { background:#fffbeb; color:#b45309; }
+.fault-submetric-processing { background:#eff6ff; color:#2563eb; }
+.fault-overdue-subset { position:absolute; right:14px; top:51px; display:flex; align-items:baseline; gap:4px; padding:5px 8px; border:1px solid #fee2e2; border-radius:6px; background:#fef2f2; color:#dc2626; cursor:pointer; }
+.fault-overdue-subset span,.fault-overdue-subset small { font-size:10px; }
+.fault-overdue-subset strong { font-size:16px; line-height:1.2; font-variant-numeric:tabular-nums; }
+.fault-overdue-subset:hover { background:#fee2e2; }
+.fault-overdue-subset:focus-visible { outline:2px solid #dc2626; outline-offset:2px; }
+.fault-overdue-subset:disabled { opacity:.6; cursor:default; }
+.fault-summary-note { margin-top:12px; font-size:10px; color:#94a3b8; line-height:1.6; }
+@media(max-width:767px) {
+ .fault-metric { height:172px; }
+ .fault-metric-main { padding:12px; }
+ .fault-open-breakdown { margin:0 8px 10px; gap:2px; }
+ .fault-submetric { min-height:40px; }
+ .fault-overdue-subset { right:8px; top:53px; gap:3px; padding:5px; }
+ .fault-overdue-subset span,.fault-overdue-subset small { font-size:9px; }
+}
+.fault-trend { margin-top:20px; }
+.fault-trend-heading { display:flex; align-items:center; justify-content:space-between; gap:12px; }
+.fault-trend-heading h2 { display:flex; align-items:center; gap:7px; font-size:14px; font-weight:600; }
+.fault-trend-heading h2 svg { color:#2563eb; }
+.fault-trend-heading [role=group] { display:flex; padding:3px; border-radius:8px; background:#f1f5f9; }
+.fault-trend-heading button { padding:6px 12px; border-radius:6px; font-size:11px; color:#64748b; cursor:pointer; }
+.fault-trend-heading button[aria-pressed=true] { color:#2563eb; background:#fff; box-shadow:0 1px 3px #e2e8f0; }
+.fault-trend-definition { margin-top:7px; font-size:11px; line-height:1.7; color:#94a3b8; }
+.fault-trend-totals { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); margin:14px 0; padding:10px; border:1px solid #f1f5f9; border-radius:10px; background:#f8fafc; }
+.fault-trend-totals button { display:flex; flex-direction:column; align-items:center; gap:4px; cursor:pointer; border-right:1px solid #e2e8f0; padding:4px; }
+.fault-trend-totals button:last-child { border-right:0; }
+.fault-trend-totals strong { font-size:21px; line-height:1.2; font-weight:650; font-variant-numeric:tabular-nums; }
+.fault-trend-totals span { font-size:11px; }
+.fault-trend-all { color:#2563eb; }.fault-trend-closed { color:#059669; }.fault-trend-unclosed { color:#d97706; }
+.fault-trend button:disabled { cursor:default; opacity:.5; }
+.fault-trend button:focus-visible { outline:2px solid #2563eb; outline-offset:2px; }
+.fault-trend-chart { width:100%; min-width:0; height:240px; }
+.fault-trend-loading { min-height:120px; display:flex; align-items:center; justify-content:center; gap:8px; color:#94a3b8; font-size:12px; }
+.fault-trend-expand { display:flex; align-items:center; justify-content:space-between; gap:8px; width:100%; margin-top:12px; padding:12px; border:1px solid #bfdbfe; border-radius:8px; color:#2563eb; background:#eff6ff; font-size:12px; cursor:pointer; text-align:left; }
+.fault-trend-table { max-height:400px; overflow:auto; margin-top:12px; border:1px solid #e2e8f0; border-radius:8px; }
+.fault-trend-table table { width:100%; border-collapse:collapse; font-size:12px; white-space:nowrap; }
+.fault-trend-table th { text-align:right; padding:10px 12px; position:sticky; top:0; background:#f8fafc; color:#64748b; z-index:1; }
+.fault-trend-table td { padding:5px 12px; text-align:right; border-top:1px solid #f1f5f9; font-variant-numeric:tabular-nums; }
+.fault-trend-table th:first-child,.fault-trend-table td:first-child { text-align:left; }
+.fault-trend-table button { min-height:32px; min-width:32px; color:#2563eb; cursor:pointer; }
+@media(max-width:767px) { .fault-trend { margin-top:14px; }.fault-trend-heading h2 { font-size:12px; }.fault-trend-heading button { padding:7px 10px; }.fault-trend-table th,.fault-trend-table td { padding-left:6px; padding-right:6px; font-size:10px; }.fault-trend-table button { min-height:40px; }.fault-trend-expand { font-size:11px; } }
+.fault-weekly .fault-trend-totals { grid-template-columns:repeat(2,minmax(0,1fr)); }
+.fault-weekly-unit { font-size:11px; color:#94a3b8; }
+.fault-weekly-reported,.fault-weekly-table button.fault-weekly-reported { color:#2563eb; }
+.fault-weekly-received,.fault-weekly-table button.fault-weekly-received { color:#d97706; }
+.fault-weekly-closed,.fault-weekly-table button.fault-weekly-closed { color:#059669; }
+.fault-weekly-table td small { display:inline-block; margin-left:8px; color:#94a3b8; font-size:10px; }
+.fault-weekly-table tfoot th { position:static; border-top:1px solid #e2e8f0; background:#f8fafc; padding-top:4px; padding-bottom:4px; }
+.fault-weekly-empty { margin-top:10px; font-size:12px; color:#94a3b8; text-align:center; }
+@media(max-width:767px) { .fault-weekly-table td small { display:block; margin:0; }.fault-weekly .fault-trend-totals span { font-size:10px; } }
+
+.fault-weekly-chart { height:auto; padding:16px 12px 4px; border:1px solid #edf2f7; border-radius:12px; background:#fff; }
+.fault-chart-heading { display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:12px; padding:0 4px 4px; font-size:12px; color:#334155; font-weight:600; }
+.fault-chart-heading small { margin-left:10px; font-size:10px; color:#94a3b8; font-weight:400; }
+.fault-chart-legend { display:flex; align-items:center; gap:18px; font-size:11px; color:#64748b; font-weight:400; }
+.fault-chart-legend>span { display:flex; align-items:center; gap:7px; }
+.fault-chart-legend i { position:relative; width:20px; height:2px; background:#2563eb; }
+.fault-chart-legend i::after { content:''; position:absolute; left:7px; top:-3px; width:8px; height:8px; border:2px solid #2563eb; border-radius:50%; background:#fff; }
+.fault-chart-key-closed i { background:#059669; }
+.fault-chart-key-closed i::after { border-color:#059669; background:#059669; }
+@media(max-width:767px) { .fault-weekly-chart { padding:14px 6px 2px; }.fault-chart-heading { gap:10px; }.fault-chart-legend { gap:12px; font-size:10px; } }
+
+/* Compact mobile summary: preserve equal card heights and all drill-down targets. */
+@media(max-width:767px) {
+ .fault-page-header { margin-bottom:10px; padding:10px 12px 6px; }
+ .fault-page-header>div { gap:8px; margin-top:3px; }
+ .fault-page-header button { min-height:32px; }
+ .fault-page>.fault-summary:first-of-type { padding:12px; }
+ .fault-summary-heading { flex-direction:row; flex-wrap:wrap; align-items:center; gap:4px 8px; margin-bottom:10px; }
+ .fault-summary-heading h2 { font-size:13px; }
+ .fault-summary-heading>span { font-size:10px; }
+ .fault-metrics { gap:8px; }
+ .fault-metric { height:132px; }
+ .fault-metric-main { padding:10px; }
+ .fault-metric-label { gap:6px; }
+ .fault-metric-icon { width:24px; height:24px; border-radius:6px; }
+ .fault-metric-icon svg { width:17px; height:17px; }
+ .fault-metric-count { gap:5px; margin:5px 0 3px; }
+ .fault-metric-count strong { font-size:26px; }
+ .fault-metric-link { padding-top:4px; }
+ .fault-open-breakdown { margin:0 8px 8px; padding-top:6px; gap:3px; }
+ .fault-submetric { flex-direction:row; justify-content:center; gap:4px; min-height:32px; padding:4px 2px; }
+ .fault-submetric strong { font-size:14px; }
+ .fault-composition-plus { font-size:14px; }
+ .fault-overdue-subset { top:41px; right:8px; min-height:32px; padding:4px; gap:3px; align-items:center; }
+ .fault-overdue-subset .fault-overdue-prefix { display:none; }
+ .fault-overdue-subset strong { font-size:14px; }
+ .fault-page>.fault-summary:first-of-type>.fault-summary-note { margin-top:8px; font-size:10px; line-height:1.5; }
+}
+@media(max-width:359px) {
+ .fault-open-breakdown { margin-right:6px; margin-left:6px; gap:2px; }
+ .fault-submetric { gap:2px; padding-right:0; padding-left:0; font-size:9px; white-space:nowrap; }
+ .fault-submetric strong { font-size:13px; }
+ .fault-composition-plus { font-size:12px; }
+}
+
+.fault-weekly-date { display:inline-flex; align-items:center; gap:6px; }
+.fault-weekly-table tr.fault-weekly-today { background:#f5f8ff; }
+.fault-weekly-today td:first-child { box-shadow:inset 2px 0 #bfd0ee; }
+.fault-today-label { padding:1px 5px; border-radius:4px; background:#e8effb; color:#536d96; font-size:10px; line-height:1.6; font-weight:500; }
+@media(max-width:767px) { .fault-weekly-date { gap:4px; }.fault-today-label { padding:1px 4px; font-size:9px; } }
+
+/* Short, single-pass entrance: no bounce, list staggering, or animated blur. */
+.fault-analysis-overlay { animation:fault-backdrop-enter 160ms ease-out backwards; }
+.fault-analysis-dialog { --fault-enter-y:12px; --fault-enter-scale:.985; transform-origin:50% 60%; animation:fault-dialog-enter 260ms cubic-bezier(.16,1,.3,1) backwards; }
+@keyframes fault-backdrop-enter { from { opacity:0; } to { opacity:1; } }
+@keyframes fault-dialog-enter { from { opacity:0; transform:translateY(var(--fault-enter-y)) scale(var(--fault-enter-scale)); } to { opacity:1; transform:none; } }
+@media(max-width:767px) { .fault-analysis-dialog { --fault-enter-y:8px; --fault-enter-scale:1; animation-duration:220ms; } }
+@media(prefers-reduced-motion:reduce) { .fault-analysis-overlay,.fault-analysis-dialog { animation:none; } }
+
+/* Scoped Apple-style semantic grays; keep the surrounding BI theme unchanged. */
+.fault-analysis-loading { --loading-label:rgba(60,60,67,.72); --loading-fill:rgba(118,118,128,.09); --loading-line:rgba(60,60,67,.08); --loading-radius:12px; padding:8px 0 4px; min-height:340px; }
+.fault-loading-status { display:flex; align-items:center; justify-content:center; gap:10px; min-height:40px; margin-bottom:20px; color:var(--loading-label); font-size:12px; letter-spacing:.01em; }
+.fault-loading-spinner { width:24px; height:24px; flex-shrink:0; }
+.fault-loading-spinner rect { opacity:.2; animation:fault-spinner-tick 1s linear infinite; }
+@keyframes fault-spinner-tick { from { opacity:1; } to { opacity:.15; } }
+.fault-loading-skeleton { animation:fault-skeleton-breathe 1.8s ease-in-out infinite; }
+@keyframes fault-skeleton-breathe { 0%,100% { opacity:.65; } 50% { opacity:1; } }
+.fault-loading-block { display:block; height:10px; border-radius:5px; background:var(--loading-fill); }
+.fault-loading-controls { padding:16px; border:1px solid var(--loading-line); border-radius:var(--loading-radius); }
+.fault-loading-title { width:84px; margin-bottom:14px; }
+.fault-loading-controls>div { display:flex; flex-wrap:wrap; gap:8px; }
+.fault-loading-controls>div>span { width:88px; height:28px; border-radius:7px; }
+.fault-loading-controls>div>span:nth-child(2n) { width:106px; }
+.fault-loading-summary { display:flex; align-items:center; gap:16px; padding:20px 0; }
+.fault-loading-summary>span:first-child { width:128px; height:18px; }.fault-loading-summary>span:last-child { width:66px; }
+.fault-loading-table { border:1px solid var(--loading-line); border-radius:var(--loading-radius); overflow:hidden; }
+.fault-loading-table-head,.fault-loading-row { display:grid; grid-template-columns:2fr 1fr 1fr; align-items:center; gap:24px; padding:16px; }
+.fault-loading-table-head { background:var(--loading-fill); }
+.fault-loading-row { border-top:1px solid var(--loading-line); }
+.fault-loading-table .fault-loading-block { width:60%; max-width:130px; }
+.fault-loading-row:nth-child(2n)>.fault-loading-block:first-child { width:80%; }
+@media(max-width:767px) { .fault-loading-status { margin-bottom:16px; }.fault-loading-controls { padding:12px; }.fault-loading-controls>div { flex-wrap:nowrap; overflow:hidden; }.fault-loading-controls>div>span { flex-shrink:0; width:76px; }.fault-loading-table-head,.fault-loading-row { padding:16px 12px; gap:16px; } }
+@media(prefers-reduced-motion:reduce) { .fault-loading-spinner rect,.fault-loading-skeleton { animation:none; }.fault-loading-spinner rect:nth-child(3n) { opacity:.65; } }
+@media(prefers-contrast:more) { .fault-analysis-loading { --loading-label:#334155; --loading-line:#94a3b8; --loading-fill:rgba(118,118,128,.18); } }
+
+.fault-report-actions { display:flex; align-items:center; gap:10px; flex-wrap:wrap; justify-content:flex-end; }
+.fault-report-actions .analysis-export-action { display:flex; flex-direction:column; align-items:flex-end; gap:4px; }
+.fault-report-actions .analysis-export-action button { display:inline-flex; align-items:center; justify-content:center; gap:5px; min-height:32px; border:1px solid #dbe4f0; border-radius:7px; background:#fff; color:#475569; padding:6px 10px; white-space:nowrap; }
+.fault-report-actions .analysis-export-action button:hover:not(:disabled) { color:#2563eb; border-color:#93c5fd; background:#eff6ff; }
+.fault-report-actions .analysis-export-action small { font-size:10px; color:#dc2626; }
+@media(max-width:767px) { .fault-trend-heading { flex-wrap:wrap; gap:8px; }.fault-report-actions { gap:6px; margin-left:auto; }.fault-report-actions .analysis-export-action button { min-height:40px; padding:7px 8px; font-size:10px; }.fault-report-actions .fault-weekly-unit { display:none; } }
diff --git a/src/modules/assets/faults/report-export.test.ts b/src/modules/assets/faults/report-export.test.ts
new file mode 100644
index 0000000..17bdbbd
--- /dev/null
+++ b/src/modules/assets/faults/report-export.test.ts
@@ -0,0 +1,60 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import ExcelJS from 'exceljs';
+import { createFaultReportWorkbook, type FaultReport } from './report-export';
+
+const now = new Date('2026-10-13T08:00:00Z');
+async function saved(report: FaultReport) {
+  const book = await createFaultReportWorkbook(report, undefined, now);
+  const reopened = new ExcelJS.Workbook();
+  await reopened.xlsx.load(await book.xlsx.writeBuffer());
+  return reopened.worksheets[0];
+}
+
+test('trend export preserves monthly range, real dates, cohort counts and weighted closure rate after serialization', async () => {
+  const sheet = await saved({ kind: 'trend', data: {
+    start: '2026-09-14', end: '2026-10-13', granularity: 'month', updatedAt: now.toISOString(),
+    totals: { reported: 10, closed: 7, unclosed: 3 },
+    periods: [{ period: '2026-09', reported: 8, closed: 5, unclosed: 3 }, { period: '2026-10', reported: 2, closed: 2, unclosed: 0 }],
+  } });
+  assert.match(String(sheet.getCell('A2').value), /2026-09-14 至 2026-10-13.*按月/);
+  assert.equal((sheet.getCell('A10').value as Date).toISOString(), '2026-10-01T00:00:00.000Z');
+  assert.equal(sheet.getCell('A10').numFmt, 'yyyy-mm');
+  assert.equal(sheet.getCell('B11').value, 8);
+  assert.equal(sheet.getCell('C11').value, 5);
+  assert.equal(sheet.getCell('D11').value, 3);
+  assert.deepEqual(sheet.getCell('B12').value, { formula: 'SUM(B10:B11)', result: 10 });
+  assert.deepEqual(sheet.getCell('E12').value, { formula: 'IFERROR(C12/B12,0)', result: .7 });
+  assert.equal(sheet.autoFilter, 'A9:E11');
+  assert.equal(sheet.views[0].state, 'frozen');
+  assert.equal(sheet.getCell('A9').fill.type, 'pattern');
+});
+
+test('weekly export keeps independent solved counts, descending dates and excludes receipt metrics', async () => {
+  const sheet = await saved({ kind: 'weekly', data: {
+    start: '2026-10-12', end: '2026-10-13', updatedAt: now.toISOString(),
+    totals: { reported: 3, closed: 9, received: 99 },
+    days: [{ date: '2026-10-12', reported: 1, closed: 3, received: 90 }, { date: '2026-10-13', reported: 2, closed: 6, received: 9 }],
+  } });
+  assert.deepEqual([1, 2, 3, 4].map(col => sheet.getCell(9, col).value), ['日期', '星期', '新增故障（单）', '解决故障（单）']);
+  assert.equal((sheet.getCell('A10').value as Date).toISOString(), '2026-10-13T00:00:00.000Z');
+  assert.match(sheet.getCell('A10').numFmt, /今天/);
+  assert.equal(sheet.getCell('B10').value, '周二');
+  assert.equal(sheet.getCell('D10').value, 6);
+  assert.deepEqual(sheet.getCell('D12').value, { formula: 'SUM(D10:D11)', result: 9 });
+  assert.deepEqual(sheet.getCell('C6').value, { formula: 'SUM(D10:D11)', result: 9 });
+  assert.equal(sheet.columnCount, 4);
+});
+
+test('zero-data trend exports valid guarded ratios and empty reports avoid inverted SUM ranges', async () => {
+  for (const periods of [[], [{ period: '2026-10-13', reported: 0, closed: 0, unclosed: 0 }]]) {
+    const sheet = await saved({ kind: 'trend', data: {
+      start: '2026-10-13', end: '2026-10-13', granularity: 'day', updatedAt: now.toISOString(),
+      totals: { reported: 0, closed: 0, unclosed: 0 }, periods,
+    } });
+    const total = 10 + periods.length;
+    assert.equal(sheet.getCell(`E${total}`).formula, `IFERROR(C${total}/B${total},0)`);
+    assert.equal(sheet.getCell(`B${total}`).formula, periods.length ? 'SUM(B10:B10)' : '0');
+    assert.equal(sheet.getCell('A6').result, 0);
+  }
+});
diff --git a/src/modules/assets/faults/report-export.ts b/src/modules/assets/faults/report-export.ts
new file mode 100644
index 0000000..3b39932
--- /dev/null
+++ b/src/modules/assets/faults/report-export.ts
@@ -0,0 +1,140 @@
+import type { FaultTrendResponse, FaultWeeklyResponse } from '../../../shared/assets/faults';
+import type { Cell, Worksheet } from 'exceljs';
+
+export type FaultReport = { kind: 'trend'; data: FaultTrendResponse } | { kind: 'weekly'; data: FaultWeeklyResponse };
+interface ReportChartImage { dataUrl: string; width: number; height: number }
+const palette = { navy: '1E293B', text: '334155', muted: '64748B', blue: '2563EB', green: '059669', amber: 'D97706', line: 'E2E8F0', stripe: 'F8FAFC', today: 'EFF6FF', white: 'FFFFFF' };
+const fill = (color: string) => ({ type: 'pattern' as const, pattern: 'solid' as const, fgColor: { argb: `FF${color}` } });
+const excelDate = (date: string) => new Date(`${date.length === 7 ? `${date}-01` : date}T00:00:00Z`);
+const beijingTime = (date: string | Date) => new Date(date).toLocaleString('zh-CN', { timeZone: 'Asia/Shanghai', hour12: false });
+function merged(sheet: Worksheet, row: number, from: number, to: number, value: Cell['value']) {
+  if (to > from) sheet.mergeCells(row, from, row, to);
+  const cell = sheet.getCell(row, from); cell.value = value; return cell;
+}
+
+/** Browser-independent workbook builder; export the displayed authorized snapshot without requerying. */
+export async function createFaultReportWorkbook(report: FaultReport, chartImage?: ReportChartImage, now = new Date()) {
+  const ExcelJS = (await import('exceljs')).default;
+  const book = new ExcelJS.Workbook();
+  book.creator = '羚牛氢能 BI'; book.created = now; book.modified = now;
+  const trend = report.kind === 'trend';
+  const title = trend ? '故障处理趋势' : '故障运维周报';
+  const headers = trend ? [report.data.granularity === 'month' ? '提报月份' : '提报日期', '新增故障（单）', '已闭环（单）', '未闭环（单）', '闭环率'] : ['日期', '星期', '新增故障（单）', '解决故障（单）'];
+  const columns = headers.length;
+  const sheet = book.addWorksheet(title, { properties: { defaultRowHeight: 22 }, pageSetup: { paperSize: 9, orientation: 'portrait', fitToPage: true, fitToWidth: 1, fitToHeight: 0, horizontalCentered: true, margins: { left: .3, right: .3, top: .4, bottom: .4, header: .2, footer: .2 } } });
+  sheet.columns = (trend ? [24, 19, 19, 19, 18] : [26, 16, 25, 25]).map(width => ({ width }));
+  const headerRow = 9;
+  const periods = trend ? [...report.data.periods].reverse() : [...report.data.days].reverse();
+  const start = headerRow + 1, end = headerRow + periods.length, totalRow = end + 1;
+  const today = new Date(now.getTime() + 8 * 3600000).toISOString().slice(0, 10);
+  const bottom = totalRow + 3;
+  for (let row = 1; row <= bottom; row++) for (let col = 1; col <= columns; col++) {
+    const cell = sheet.getCell(row, col);
+    cell.font = { name: 'Microsoft YaHei', size: 11, color: { argb: `FF${palette.text}` } };
+    cell.alignment = { vertical: 'middle', horizontal: col === 1 ? 'left' : 'center' };
+  }
+  const titleCell = merged(sheet, 1, 1, columns, `羚牛氢能 · ${title}`);
+  titleCell.font = { name: 'Microsoft YaHei', size: 22, bold: true, color: { argb: 'FFFFFFFF' } };
+  titleCell.fill = fill(palette.navy); titleCell.alignment = { vertical: 'middle', indent: 1 }; sheet.getRow(1).height = 48;
+  merged(sheet, 2, 1, columns, `统计范围：${report.data.start} 至 ${report.data.end}  ·  ${trend && report.data.granularity === 'month' ? '按月' : '按日'}  ·  单位：单`);
+  const stamp = merged(sheet, 3, 1, columns, `数据时间：${beijingTime(report.data.updatedAt)}（北京时间）`); stamp.font = { name: 'Microsoft YaHei', size: 10, color: { argb: `FF${palette.muted}` } };
+  sheet.getRow(2).height = 28; sheet.getRow(4).height = 10; sheet.getRow(7).height = 10;
+  const sum = (column: string) => periods.length ? `SUM(${column}${start}:${column}${end})` : '0';
+  const cards = trend
+    ? [{ from: 1, to: 2, label: '新增故障', col: 'B', value: report.data.totals.reported, color: palette.blue }, { from: 3, to: 4, label: '已闭环', col: 'C', value: report.data.totals.closed, color: palette.green }, { from: 5, to: 5, label: '未闭环', col: 'D', value: report.data.totals.unclosed, color: palette.amber }]
+    : [{ from: 1, to: 2, label: '新增故障', col: 'C', value: report.data.totals.reported, color: palette.blue }, { from: 3, to: 4, label: '解决故障', col: 'D', value: report.data.totals.closed, color: palette.green }];
+  for (const card of cards) {
+    const label = merged(sheet, 5, card.from, card.to, card.label);
+    const value = merged(sheet, 6, card.from, card.to, { formula: sum(card.col), result: card.value });
+    for (const cell of [label, value]) { cell.fill = fill(palette.stripe); cell.alignment = { horizontal: 'center', vertical: 'middle' }; }
+    label.font = { name: 'Microsoft YaHei', size: 11, color: { argb: `FF${palette.muted}` } };
+    value.font = { name: 'Microsoft YaHei', size: 26, bold: true, color: { argb: `FF${card.color}` } }; value.numFmt = '#,##0';
+  }
+  sheet.getRow(5).height = 25; sheet.getRow(6).height = 40;
+  if (chartImage) {
+    const chart = book.addWorksheet('图表', { views: [{ showGridLines: false }], pageSetup: { paperSize: 9, orientation: 'landscape', fitToPage: true, fitToWidth: 1, fitToHeight: 1 } });
+    chart.columns = headers.map(() => ({ width: 900 / columns / 7 }));
+    chart.properties.defaultRowHeight = 24;
+    const heading = merged(chart, 1, 1, columns, `羚牛氢能 · ${title}`);
+    heading.font = { name: 'Microsoft YaHei', size: 22, bold: true, color: { argb: 'FFFFFFFF' } }; heading.fill = fill(palette.navy); heading.alignment = { vertical: 'middle', indent: 1 }; chart.getRow(1).height = 48;
+    const period = merged(chart, 2, 1, columns, `${report.data.start} 至 ${report.data.end}  ·  ${trend && report.data.granularity === 'month' ? '按月' : '按日'}  ·  单位：单`);
+    period.font = { name: 'Microsoft YaHei', size: 11, color: { argb: `FF${palette.text}` } };
+    const key = merged(chart, 3, 1, columns, trend ? '绿色：已闭环    橙色：未闭环    柱总高为新增故障数' : '蓝色：新增故障    绿色：解决故障');
+    key.font = { name: 'Microsoft YaHei', size: 10, color: { argb: `FF${palette.muted}` } };
+    const id = book.addImage({ base64: chartImage.dataUrl, extension: 'png' });
+    const scale = Math.min(900 / chartImage.width, 360 / chartImage.height);
+    const width = chartImage.width * scale, height = chartImage.height * scale;
+    // Keep circles and labels proportional for both desktop and mobile snapshots.
+    chart.addImage(id, { tl: { col: (900 - width) / 2 / (900 / columns), row: 4 + (360 - height) / 64 }, ext: { width, height }, editAs: 'oneCell' });
+    const caption = merged(chart, 17, 1, columns, `图表为当前页面快照，精确数量见「${title}」工作表。`);
+    caption.font = { name: 'Microsoft YaHei', size: 10, color: { argb: `FF${palette.muted}` } };
+    chart.pageSetup.printArea = `A1:${String.fromCharCode(64 + columns)}17`;
+  }
+  headers.forEach((label, i) => { const cell = sheet.getCell(headerRow, i + 1); cell.value = label; cell.fill = fill(palette.navy); cell.font = { name: 'Microsoft YaHei', size: 11, bold: true, color: { argb: 'FFFFFFFF' } }; });
+  sheet.getRow(headerRow).height = 30;
+  if (trend) [...report.data.periods].reverse().forEach((row, i) => {
+    const n = start + i;
+    sheet.getRow(n).values = [excelDate(row.period), row.reported, row.closed, row.unclosed, { formula: `IFERROR(C${n}/B${n},0)`, result: row.reported ? row.closed / row.reported : 0 }];
+    sheet.getCell(n, 1).numFmt = report.data.granularity === 'month' ? 'yyyy-mm' : 'yyyy-mm-dd';
+    sheet.getCell(n, 5).numFmt = '0.0%;-0.0%;"—"';
+  });
+  else [...report.data.days].reverse().forEach((row, i) => {
+    sheet.getRow(start + i).values = [excelDate(row.date), excelDate(row.date).toLocaleDateString('zh-CN', { weekday: 'short', timeZone: 'UTC' }), row.reported, row.closed];
+    sheet.getCell(start + i, 1).numFmt = row.date === today ? 'yyyy-mm-dd" 今天"' : 'yyyy-mm-dd';
+  });
+  for (let row = start; row <= end; row++) {
+    const date = sheet.getCell(row, 1).value as Date;
+    const highlight = date.toISOString().slice(0, 10) === today && (!trend || report.data.granularity === 'day');
+    sheet.getRow(row).height = 26;
+    for (let col = 1; col <= columns; col++) {
+      const cell = sheet.getCell(row, col); cell.fill = fill(highlight ? palette.today : (row - start) % 2 ? palette.stripe : palette.white);
+      cell.font = { name: 'Microsoft YaHei', size: 11, color: { argb: `FF${palette.text}` } };
+      cell.alignment = { vertical: 'middle', horizontal: col === 1 ? 'left' : 'center' };
+      cell.border = { bottom: { style: 'hair', color: { argb: `FF${palette.line}` } } };
+      if (col > (trend ? 1 : 2) && !(trend && col === 5)) {
+        cell.numFmt = '#,##0'; const color = trend ? [palette.blue, palette.green, palette.amber][col - 2] : col === 3 ? palette.blue : palette.green;
+        cell.font = { name: 'Microsoft YaHei', size: 11, color: { argb: `FF${color}` } };
+      }
+    }
+  }
+  sheet.getCell(totalRow, 1).value = '合计';
+  cards.forEach(card => { sheet.getCell(`${card.col}${totalRow}`).value = { formula: sum(card.col), result: card.value }; sheet.getCell(`${card.col}${totalRow}`).numFmt = '#,##0'; });
+  if (trend) { sheet.getCell(totalRow, 5).value = { formula: `IFERROR(C${totalRow}/B${totalRow},0)`, result: report.data.totals.reported ? report.data.totals.closed / report.data.totals.reported : 0 }; sheet.getCell(totalRow, 5).numFmt = '0.0%;-0.0%;"—"'; }
+  for (let col = 1; col <= columns; col++) { const cell = sheet.getCell(totalRow, col); cell.fill = fill('E8EFF9'); cell.font = { name: 'Microsoft YaHei', size: 11, bold: true, color: { argb: `FF${palette.navy}` } }; }
+  sheet.getRow(totalRow).height = 30;
+  const note = merged(sheet, totalRow + 2, 1, columns, trend ? '统计口径：按提报日期统计同批故障；已归档为已闭环，其余状态（含挂起）为未闭环。按月仅统计所选日期范围。' : '统计口径：新增故障按提报日期；解决故障按解决日期统计，不受提报日期限制。同一故障可在不同日期分别计入两个指标。');
+  note.font = { name: 'Microsoft YaHei', size: 10, color: { argb: `FF${palette.muted}` } }; note.alignment = { wrapText: true, vertical: 'middle' }; sheet.getRow(totalRow + 2).height = 36;
+  const source = merged(sheet, bottom, 1, columns, `来源：羚牛氢能 BI 当前可见统计  ·  导出时间：${beijingTime(now)}（北京时间）`); source.font = { name: 'Microsoft YaHei', size: 9, color: { argb: `FF${palette.muted}` } };
+  sheet.autoFilter = { from: { row: headerRow, column: 1 }, to: { row: Math.max(headerRow, end), column: columns } };
+  sheet.views = [{ state: 'frozen', ySplit: headerRow, topLeftCell: `A${start}`, showGridLines: false }];
+  sheet.pageSetup.printArea = `A1:${String.fromCharCode(64 + columns)}${bottom}`;
+  sheet.pageSetup.printTitlesRow = `${headerRow}:${headerRow}`;
+  sheet.headerFooter.oddFooter = '&L羚牛氢能 · 故障管理&R第 &P 页 / 共 &N 页';
+  return book;
+}
+
+async function chartImage(svg: SVGSVGElement): Promise<ReportChartImage> {
+  const width = svg.clientWidth || Number(svg.getAttribute('width')) || 800;
+  const height = svg.clientHeight || Number(svg.getAttribute('height')) || 240;
+  const clone = svg.cloneNode(true) as SVGSVGElement;
+  clone.setAttribute('xmlns', 'http://www.w3.org/2000/svg'); clone.setAttribute('width', String(width)); clone.setAttribute('height', String(height));
+  clone.style.fontFamily = 'Arial, sans-serif';
+  const url = URL.createObjectURL(new Blob([new XMLSerializer().serializeToString(clone)], { type: 'image/svg+xml;charset=utf-8' }));
+  try {
+    const image = new Image();
+    await new Promise<void>((resolve, reject) => { image.onload = () => resolve(); image.onerror = () => reject(new Error('图表生成失败')); image.src = url; });
+    const canvas = document.createElement('canvas'); canvas.width = Math.ceil(width * 2); canvas.height = Math.ceil(height * 2);
+    const ctx = canvas.getContext('2d'); if (!ctx) throw new Error('图表生成失败');
+    ctx.scale(2, 2); ctx.fillStyle = '#fff'; ctx.fillRect(0, 0, width, height); ctx.drawImage(image, 0, 0, width, height);
+    return { dataUrl: canvas.toDataURL('image/png'), width, height };
+  } finally { URL.revokeObjectURL(url); }
+}
+export async function downloadFaultReport(report: FaultReport, svg?: SVGSVGElement) {
+  const png = svg ? await chartImage(svg) : undefined;
+  const book = await createFaultReportWorkbook(report, png);
+  const bytes = await book.xlsx.writeBuffer();
+  const url = URL.createObjectURL(new Blob([new Uint8Array(bytes)], { type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' }));
+  const link = document.createElement('a'); link.href = url;
+  link.download = `${report.kind === 'trend' ? `故障处理趋势_${report.data.granularity === 'day' ? '按日' : '按月'}` : '故障运维周报'}_${report.data.start}_${report.data.end}.xlsx`;
+  document.body.appendChild(link); link.click(); link.remove(); setTimeout(() => URL.revokeObjectURL(url), 10000);
+}
diff --git a/src/modules/assets/useMobileLayout.ts b/src/modules/assets/useMobileLayout.ts
new file mode 100644
index 0000000..305b592
--- /dev/null
+++ b/src/modules/assets/useMobileLayout.ts
@@ -0,0 +1,12 @@
+import { useSyncExternalStore } from 'react';
+
+const query = '(max-width: 767px)';
+const subscribe = (notify: () => void) => {
+  const media = window.matchMedia(query);
+  media.addEventListener('change', notify);
+  return () => media.removeEventListener('change', notify);
+};
+/** Keep the two mobile asset surfaces on the same breakpoint. */
+export function useMobileLayout() {
+  return useSyncExternalStore(subscribe, () => window.matchMedia(query).matches, () => false);
+}
diff --git a/src/server/app.ts b/src/server/app.ts
index 843492f..ba801d5 100644
--- a/src/server/app.ts
+++ b/src/server/app.ts
@@ -13,6 +13,7 @@ import schedulingRouter from './routes/scheduling/index.js';
 import vehicleHeatmapRouter from './routes/vehicle-heatmap.js';
 import vehiclesRouter from './routes/vehicles.js';
 import assetAssistantRouter from './routes/asset-assistant/index.js';
+import assetFaultRouter from './routes/asset-faults/index.js';
 
 /**
  * 创建 HTTP 应用，但不监听端口、不访问数据库，也不启动后台任务。
@@ -30,6 +31,7 @@ export function createApp(): Hono {
   app.use('/api/*', createPreviewMiddleware());
 
   app.route('/api/vehicles', vehiclesRouter);
+  app.route('/api/asset-faults', assetFaultRouter);
   app.route('/api/asset-assistant', assetAssistantRouter);
   app.route('/api/mileage', mileageRouter);
   app.route('/api/scheduling', schedulingRouter);
diff --git a/src/server/routes/asset-faults/index.ts b/src/server/routes/asset-faults/index.ts
new file mode 100644
index 0000000..834b85b
--- /dev/null
+++ b/src/server/routes/asset-faults/index.ts
@@ -0,0 +1,90 @@
+import { Hono } from 'hono';
+import { FAULT_OVERVIEW_METRICS, type FaultOverviewMetric } from '../../../shared/assets/faults.js';
+import type { AuthUser } from '../../auth/types.js';
+import { analyzeFaults, faultOverview, faultAnalysis, parseFaultQuery, visibleFaults } from './model.js';
+import { faultWeeklyReport, faultWeeklyAnalysis, parseFaultWeeklyQuery } from './weekly-report.js';
+import { loadFaults } from './repository.js';
+import { faultTrend, faultTrendAnalysis, parseFaultTrendQuery } from './trend.js';
+
+export function createFaultRouter(load = loadFaults) {
+  const app = new Hono<{ Variables: { user: AuthUser } }>();
+  for (const path of ['/trend', '/trend-analysis'] as const) {
+    app.get(path, async c => {
+      const user = c.get('user');
+      if (!user) return c.json({ error: 'Unauthorized' }, 401);
+      let query;
+      try { query = parseFaultTrendQuery(c.req.query()); }
+      catch (error) { return c.json({ error: (error as Error).message }, 400); }
+      try {
+        const data = await load();
+        const rows = visibleFaults(data.rows, user);
+        c.header('Cache-Control', 'no-store');
+        return c.json(path === '/trend' ? faultTrend(rows, query, data.updatedAt) : faultTrendAnalysis(rows, query, data.updatedAt));
+      } catch (error) {
+        console.error('Fault trend failed:', error instanceof Error ? error.message : 'unknown');
+        return c.json({ error: '故障趋势暂时不可用，请稍后重试' }, 503);
+      }
+    });
+  }
+  for (const path of ['/weekly-report', '/weekly-report-analysis'] as const) {
+    app.get(path, async c => {
+      const user = c.get('user');
+      if (!user) return c.json({ error: 'Unauthorized' }, 401);
+      let query;
+      try { query = parseFaultWeeklyQuery(c.req.query()); }
+      catch (error) { return c.json({ error: (error as Error).message }, 400); }
+      try {
+        const data = await load();
+        const rows = visibleFaults(data.rows, user);
+        c.header('Cache-Control', 'no-store');
+        return c.json(path === '/weekly-report' ? faultWeeklyReport(rows, query, data.updatedAt) : faultWeeklyAnalysis(rows, query, data.updatedAt));
+      } catch (error) {
+        console.error('Fault weekly report failed:', error instanceof Error ? error.message : 'unknown');
+        return c.json({ error: '故障运维周报暂时不可用，请稍后重试' }, 503);
+      }
+    });
+  }
+  app.get('/overview', async c => {
+    const user = c.get('user');
+    if (!user) return c.json({ error: 'Unauthorized' }, 401);
+    try {
+      const data = await load();
+      c.header('Cache-Control', 'no-store');
+      return c.json(faultOverview(visibleFaults(data.rows, user), data.updatedAt));
+    } catch (error) {
+      console.error('Fault overview failed:', error instanceof Error ? error.message : 'unknown');
+      return c.json({ error: '故障数据暂时不可用，请稍后重试' }, 503);
+    }
+  });
+  app.get('/analysis', async c => {
+    const user = c.get('user');
+    if (!user) return c.json({ error: 'Unauthorized' }, 401);
+    const metric = c.req.query('metric') || '';
+    if (!Object.hasOwn(FAULT_OVERVIEW_METRICS, metric)) return c.json({ error: '无效统计指标' }, 400);
+    try {
+      const data = await load();
+      c.header('Cache-Control', 'no-store');
+      return c.json(faultAnalysis(visibleFaults(data.rows, user), metric as FaultOverviewMetric, data.updatedAt));
+    } catch (error) {
+      console.error('Fault analysis failed:', error instanceof Error ? error.message : 'unknown');
+      return c.json({ error: '故障数据暂时不可用，请稍后重试' }, 503);
+    }
+  });
+  app.get('/', async c => {
+    const user = c.get('user');
+    if (!user) return c.json({ error: 'Unauthorized' }, 401);
+    let query;
+    try { query = parseFaultQuery(c.req.query()); }
+    catch (error) { return c.json({ error: (error as Error).message }, 400); }
+    try {
+      const data = await load();
+      c.header('Cache-Control', 'no-store');
+      return c.json(analyzeFaults(visibleFaults(data.rows, user, query.subject), query, data.updatedAt));
+    } catch (error) {
+      console.error('Fault BI query failed:', error instanceof Error ? error.message : 'unknown');
+      return c.json({ error: '故障数据暂时不可用，请稍后重试' }, 503);
+    }
+  });
+  return app;
+}
+export default createFaultRouter();
diff --git a/src/server/routes/asset-faults/model.test.ts b/src/server/routes/asset-faults/model.test.ts
new file mode 100644
index 0000000..fac4b38
--- /dev/null
+++ b/src/server/routes/asset-faults/model.test.ts
@@ -0,0 +1,194 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { Hono } from 'hono';
+import { analyzeFaults, faultAnalysis, faultHandlers, faultInventory, mapFault, normalizeFaultStatus, parseFaultQuery, visibleFaults, type ScopedFault } from './model.js';
+import { createFaultRouter } from './index.js';
+import type { AuthUser } from '../../auth/types.js';
+
+const full: AuthUser = { userId: 'm1', userName: 'User', loginName: 'user', depCode: '', depName: '业务一部', permissionLevel: 'full', roles: [] };
+function fault(id: string, overrides: Partial<ScopedFault> = {}): ScopedFault {
+  return { assetCell: mapFault({ id }, new Map()).assetCell, id, code: id, plate: '测试车', description: '', reportedAt: '2026-10-01 12:00:00', archivedAt: null, deadlineAt: null, receivedAt: null,
+    city: '广州市', status: '待处理', inventory: '不适用', customer: 'customer1', customerLabel: '测试***户', department: '业务一部',
+    handlers: [{ value: 'id:1', label: '甲' }], subject: 'A', departmentName: '业务一部', managerId: 'm1', missingVehicle: false, ...overrides };
+}
+const query = (params: Record<string, string> = {}) => parseFaultQuery({ start: '2026-10-13', end: '2026-10-13', ...params });
+
+test('跨日完结独立于提报日期，全部挂单不受日期筛选影响，挂起和审核中均未闭环', () => {
+  const rows = [fault('old'), fault('suspended', { status: '挂起' }), fault('review', { status: '处理中' }),
+    fault('closed', { status: '已归档', archivedAt: '2026-10-13 00:00:00' }),
+    fault('new', { reportedAt: '2026-10-13 23:59:59' }), fault('tomorrow', { status: '已归档', archivedAt: '2026-10-14 00:00:00' })];
+  const result = analyzeFaults(rows, query(), 'now');
+  assert.deepEqual(result.totals, { reported: 1, closed: 1, open: 4 });
+  assert.equal(result.details.total, 4);
+  assert.deepEqual(result.daily, [{ date: '2026-10-13', reported: 1, closed: 1 }]);
+  assert.equal(analyzeFaults(rows, query({ start: '2025-01-01', end: '2025-01-02', day: '2025-01-01' }), 'now').totals.open, 4);
+  assert.equal(analyzeFaults(rows, query({ metric: 'closed' }), 'now').details.rows[0].id, 'closed');
+});
+
+test('多人负责按人员计单，总计去重；人员筛选与人员分组下钻一致', () => {
+  const row = fault('shared', { handlers: [{ value: 'id:1', label: '甲' }, { value: 'id:2', label: '乙' }] });
+  const result = analyzeFaults([row], query({ groupBy: 'handler' }), 'now');
+  assert.equal(result.totals.open, 1); assert.equal(result.groups.reduce((sum, r) => sum + r.open, 0), 2);
+  assert.equal(analyzeFaults([row], query({ handler: 'id:2' }), 'now').details.total, 1);
+  assert.equal(analyzeFaults([row], query({ groupBy: 'handler', groupValue: 'id:2' }), 'now').details.total, 1);
+});
+
+test('处置人优先来源任务工单，兼容历史姓名，保留 BIGINT 精度并去重', () => {
+  const directory = new Map([['1234567890123456789', '当前姓名']]);
+  const row = { work_ids: '[1234567890123456789,1234567890123456789]', work_names: '["旧名","旧名"]', handler_id: '2', handler_name: '非当前处置人' };
+  assert.deepEqual(faultHandlers(row, directory), [{ value: 'id:1234567890123456789', label: '当前姓名' }]);
+  assert.deepEqual(faultHandlers({ work_names: '["历史姓名"]', handler_id: '2' }, directory), [{ value: 'name:历史姓名', label: '历史姓名' }]);
+  assert.deepEqual(faultHandlers({ handler_ids: 'bad-json', handler_id: '99' }, directory), [{ value: 'id:99', label: '历史处理人(99)' }]);
+  assert.deepEqual(faultHandlers({ handler_ids: '[99,99]', handler_names: '["历史[123]","另一姓名"]' }, directory), [{ value: 'id:99', label: '历史[123]' }]);
+  assert.deepEqual(faultHandlers({}, directory), [{ value: 'unassigned', label: '未指派' }]);
+});
+
+test('库存先判断运营状态，再细分；未知状态不自动计为归档', () => {
+  assert.equal(faultInventory('1', '14', true), '不适用');
+  assert.equal(faultInventory('3', '14', true), '异动');
+  assert.equal(faultInventory('4', '4', true), '待交车');
+  assert.equal(faultInventory('3', '2', true), '可运营');
+  assert.equal(faultInventory('4', '2', true), '待运营');
+  assert.equal(faultInventory('5', '2', true), '不适用');
+  assert.equal(faultInventory(null, null, false), '未知');
+  assert.equal(normalizeFaultStatus('待处置'), '待处理');
+  assert.equal(normalizeFaultStatus('已挂起'), '挂起');
+  assert.equal(analyzeFaults([fault('odd', { status: '其他状态' })], query(), 'now').totals.open, 0);
+});
+
+test('缺失车辆和日期保留总量及可用归档事件，客户名称脱敏且不传递服务端权限字段', () => {
+  const row = mapFault({ id: 'lost', fault_code: 'F', customer_name: '需要脱敏的客户名称', handling_status: '已归档', archived_at: '2026-10-13 08:00:00' }, new Map());
+  const result = analyzeFaults([row], query({ metric: 'closed' }), 'now');
+  assert.deepEqual(result.totals, { reported: 0, closed: 1, open: 0 });
+  assert.equal(result.quality.missingReport, 1); assert.equal(result.quality.missingVehicle, 1);
+  assert.equal(result.details.rows[0].city, '未知');
+  assert.ok(!JSON.stringify(result).includes('需要脱敏的客户名称'));
+  assert.ok(!('managerId' in result.details.rows[0]));
+});
+
+test('故障历史使用严格人员/部门权限，库存不放宽；全权限保留失联车辆', () => {
+  const rows = [fault('mine'), fault('private', { managerId: 'm2', departmentName: '其他部', department: '其他部', inventory: '可运营' }), fault('lost', { managerId: '', departmentName: '', missingVehicle: true })];
+  assert.equal(visibleFaults(rows, full).length, 3);
+  assert.deepEqual(visibleFaults(rows, { ...full, permissionLevel: 'personal' }).map(r => r.id), ['mine']);
+  assert.deepEqual(visibleFaults(rows, { ...full, permissionLevel: 'department' }).map(r => r.id), ['mine']);
+  assert.equal(visibleFaults(rows, { ...full, permissionLevel: 'department', depName: '' }).length, 0);
+  assert.equal(visibleFaults(rows, full, 'B').length, 0);
+});
+
+test('日期合法性、范围限制和分页边界', () => {
+  const invalid: Record<string, string>[] = [{ start: '2026-02-30' }, { start: '2027-01-01' }, { start: '2023-01-01' }, { page: '-1' }, { groupBy: '__proto__' }, { metric: 'unknown' }, { day: '2026-10-14' }];
+  for (const params of invalid) assert.throws(() => query(params));
+  const rows = Array.from({ length: 51 }, (_, i) => fault(String(i)));
+  const result = analyzeFaults(rows, query({ page: '99' }), 'now');
+  assert.equal(result.details.page, 2); assert.equal(result.details.rows.length, 1);
+});
+
+test('API 在汇总、筛选项和明细前应用权限，未认证和无效日期不查询数据库', async () => {
+  let calls = 0;
+  const router = createFaultRouter(async () => { calls++; return { updatedAt: 'now', rows: [fault('mine'), fault('secret', { managerId: 'm2', city: '保密城市' })] }; });
+  assert.equal((await router.request('/')).status, 401); assert.equal(calls, 0);
+  const app = new Hono<{ Variables: { user: AuthUser } }>();
+  app.use('*', async (c, next) => { c.set('user', { ...full, permissionLevel: 'personal' }); await next(); });
+  app.route('/faults', router);
+  assert.equal((await app.request('/faults?start=bad')).status, 400); assert.equal(calls, 0);
+  const response = await app.request('/faults?start=2026-10-13&end=2026-10-13');
+  assert.equal(response.status, 200); assert.equal(response.headers.get('Cache-Control'), 'no-store');
+  const body = await response.json(); assert.equal(body.totals.open, 1); assert.ok(!JSON.stringify(body).includes('保密城市'));
+});
+
+test('四个总指标使用北京时间自然日，全部台账包含未知状态和无日期故障', async () => {
+  const { faultOverview, faultAnalysis } = await import('./model.js');
+  const rows = [fault('old'), fault('today', { reportedAt: '2026-10-14 00:00:00' }),
+    fault('closed', { status: '已归档', archivedAt: '2026-10-14 23:59:59' }),
+    fault('unknown', { status: '未知状态', reportedAt: null, missingVehicle: true })];
+  const at = '2026-10-13T16:00:00Z';
+  const summary = faultOverview(rows, at);
+  assert.equal(summary.date, '2026-10-14');
+  assert.deepEqual(summary.totals, { reported: 1, closed: 1, open: 2, waiting: 2, processing: 0, suspended: 0, overdue: 0, ledger: 4 });
+  for (const metric of ['reported', 'closed', 'open', 'ledger'] as const) {
+    const analysis = faultAnalysis(rows, metric, at);
+    assert.equal(analysis.rows.length, summary.totals[metric]);
+    assert.equal(analysis.rows.reduce((sum, row) => sum + row.cell.quantity, 0), summary.totals[metric]);
+    assert.ok(!JSON.stringify(analysis).includes('managerId'));
+  }
+  assert.equal(faultOverview(rows, '2026-10-13T15:59:59Z').totals.reported, 0);
+});
+
+test('故障下钻与资产维度映射同步，同车多故障逐单统计，脱敏客户保持独立', async () => {
+  const { faultAnalysis } = await import('./model.js');
+  const { getAvailableDimensions, getCustomAnalysis } = await import('../../../modules/assets/analytics-model.js');
+  const raw = { matched_vehicle_id: 'V1', model_name: '公务用车/小客车', brand: 'denza', vehicle_source: '0',
+    city_name: '上海市', province_name: '上海市', operation_status: '2', business_dept: '业务部', business_manager: '经理甲' };
+  const rows = [mapFault({ ...raw, id: 'F1', customer_name: '客户甲' }, new Map()), mapFault({ ...raw, id: 'F2', customer_name: '客户乙' }, new Map())];
+  const data = faultAnalysis(rows, 'ledger', '2026-10-13T06:00:00Z');
+  assert.equal(data.rows[0].cell.model, '公务车/挂靠车');
+  assert.equal(data.rows[0].cell.department, '公务车');
+  assert.equal(data.rows[0].cell.region, '华东');
+  assert.equal(data.rows[0].cell.manager, '经理甲');
+  assert.equal(data.rows[0].cell.assetDisposition, '自营');
+  assert.equal(getCustomAnalysis(data.rows.map(row => row.cell), { view: 'assets', dimensions: ['model'] }).rows[0].count, 2);
+  assert.equal(getCustomAnalysis(data.rows.map(row => row.cell), { view: 'assets', dimensions: ['customer'] }).rows.length, 2);
+  assert.equal(getAvailableDimensions('assets').length, 9);
+});
+
+test('总览与下钻接口先应用权限，无效指标和未认证不查询', async () => {
+  let calls = 0;
+  const router = createFaultRouter(async () => { calls++; return { updatedAt: '2026-10-13T06:00:00Z', rows: [fault('mine'), fault('secret', { managerId: 'm2', customer: 'secret-customer', customerLabel: '保密客户' })] }; });
+  for (const url of ['/overview', '/analysis?metric=ledger']) assert.equal((await router.request(url)).status, 401);
+  assert.equal(calls, 0);
+  const app = new Hono<{ Variables: { user: AuthUser } }>();
+  app.use('*', async (c, next) => { c.set('user', { ...full, permissionLevel: 'personal' }); await next(); });
+  app.route('/faults', router);
+  assert.equal((await app.request('/faults/analysis?metric=__proto__')).status, 400);
+  assert.equal(calls, 0);
+  const summary = await (await app.request('/faults/overview')).json();
+  assert.equal(summary.totals.ledger, 1);
+  const response = await app.request('/faults/analysis?metric=ledger');
+  const data = await response.json();
+  assert.equal(response.headers.get('Cache-Control'), 'no-store');
+  assert.equal(data.rows.length, summary.totals.ledger);
+  assert.ok(!JSON.stringify(data).includes('secret'));
+});
+
+test('在办按状态细分；逾期以北京时间截止时间严格比较，排除挂起、归档和无截止时间', async () => {
+  const { faultOverview, faultAnalysis } = await import('./model.js');
+  const at = '2026-10-13T06:00:00Z';
+  const rows = [fault('waiting-overdue', { deadlineAt: '2026-10-13 13:59:59' }),
+    fault('processing-overdue', { status: '处理中', deadlineAt: '2026-10-12 14:00:00' }),
+    fault('boundary', { deadlineAt: '2026-10-13 14:00:00' }),
+    fault('future', { status: '处理中', deadlineAt: '2026-10-13 14:00:01' }),
+    fault('missing'), fault('invalid', { deadlineAt: 'invalid' }),
+    fault('suspended', { status: '挂起', deadlineAt: '2026-01-01 00:00:00' }),
+    fault('archived', { status: '已归档', deadlineAt: '2026-01-01 00:00:00' })];
+  const summary = faultOverview(rows, at);
+  assert.equal(summary.totals.waiting, 4);
+  assert.equal(summary.totals.processing, 2);
+  assert.equal(summary.totals.suspended, 1);
+  assert.equal(summary.totals.open, 6);
+  assert.equal(summary.totals.overdue, 2);
+  assert.equal(summary.totals.open, summary.totals.waiting + summary.totals.processing);
+  for (const metric of ['open', 'waiting', 'processing', 'suspended', 'overdue'] as const) {
+    assert.equal(faultAnalysis(rows, metric, at).rows.length, summary.totals[metric]);
+  }
+  const openIds = new Set(faultAnalysis(rows, 'open', at).rows.map(r => r.id));
+  assert.ok(faultAnalysis(rows, 'overdue', at).rows.every(row => openIds.has(row.id)));
+  assert.deepEqual(faultAnalysis(rows, 'overdue', at).rows.map(r => r.id), ['waiting-overdue', 'processing-overdue']);
+});
+
+
+test('未关联客户的库存车单独展示，不混入非库存、未知车辆或已有客户', () => {
+  const make = (extra: Record<string, unknown>) => mapFault({ id: 'stock', matched_vehicle_id: 'v1', operation_status: '3', ...extra }, new Map());
+  for (const operation_status of ['3', '4', '可运营', '待运营', '在库']) {
+    const row = make({ operation_status });
+    assert.equal(row.customer, 'inventory-unlinked');
+    assert.equal(row.assetCell.customer, 'inventory-unlinked');
+    assert.equal(row.customerLabel, '库存车');
+  }
+  for (const extra of [{ operation_status: '1' }, { operation_status: '5' }, { operation_status: null }, { matched_vehicle_id: null }]) {
+    const row = make(extra); assert.equal(row.customer, 'unlinked'); assert.equal(row.customerLabel, '未关联客户');
+  }
+  const assigned = make({ customer_name: '测试客户名称' });
+  assert.notEqual(assigned.customer, 'inventory-unlinked');assert.notEqual(assigned.customerLabel, '库存车');
+  const result = faultAnalysis([make({}), make({ id: 'other', operation_status: '1' })], 'ledger', '2026-10-13T00:00:00Z');
+  assert.equal(result.customerLabels['inventory-unlinked'], '库存车');assert.equal(result.customerLabels.unlinked, '未关联客户');assert.equal(result.rows.length, 2);
+});
diff --git a/src/server/routes/asset-faults/model.ts b/src/server/routes/asset-faults/model.ts
new file mode 100644
index 0000000..53b0cbc
--- /dev/null
+++ b/src/server/routes/asset-faults/model.ts
@@ -0,0 +1,191 @@
+import { createHash } from 'node:crypto';
+import { FAULT_DIMENSIONS, FAULT_OVERVIEW_METRICS, type FaultDimension, type FaultOption, type FaultRecord, type FaultQuery, type FaultResponse } from '../../../shared/assets/faults.js';
+import type { AuthUser } from '../../auth/types.js';
+import { filterByPermission, maskCustomerName } from '../../auth/permissions.js';
+import type { AssetAnalysisCell } from '../../../shared/assets/analytics.js';
+import { deriveModelTag, deriveType, mapMacroRegion } from '../vehicles/model.js';
+
+export type RawFault = Record<string, unknown>;
+export interface ScopedFault extends FaultRecord {
+  subject: string; departmentName: string; managerId: string; missingVehicle: boolean;
+  assetCell: AssetAnalysisCell;
+}
+export function normalizeFaultStatus(value: unknown): string {
+  const status = String(value ?? '').trim();
+  if (['', '待处理', '待处置', '未处理'].includes(status)) return '待处理';
+  if (['处理中', '处置中', '处理'].includes(status)) return '处理中';
+  if (['挂起', '已挂起'].includes(status)) return '挂起';
+  return status;
+}
+export const isOpenFault = (status: string) => ['待处理', '处理中', '挂起'].includes(status);
+function array(value: unknown, preserveIds = false): unknown[] {
+  try {
+    // BIGINT IDs in legacy longtext arrays must never pass through floating point.
+    const parsed = typeof value === 'string' ? JSON.parse(preserveIds ? value.replace(/([\[,]\s*)(\d+)(?=\s*[,\]])/g, '$1"$2"') : value) : value;
+    return Array.isArray(parsed) ? parsed : [];
+  } catch { return []; }
+}
+const text = (value: unknown) => String(value ?? '').trim();
+const positiveId = (value: unknown) => /^[1-9]\d*$/.test(text(value));
+export function faultHandlers(row: RawFault, directory: Map<string, string>): FaultOption[] {
+  const candidates = [
+    [array(row.work_ids, true), array(row.work_names)],
+    [[row.work_id], [row.work_name]],
+    [array(row.handler_ids, true), array(row.handler_names)],
+    [[row.handler_id], [row.handler_name]],
+  ];
+  const [ids, names] = candidates.find(([ids, names]) => ids.some(positiveId) || names.some(v => text(v))) ?? [[], []];
+  const handlers = new Map<string, FaultOption>();
+  for (let i = 0; i < Math.max(ids.length, names.length); i++) {
+    const id = positiveId(ids[i]) ? text(ids[i]) : '';
+    const name = text(names[i]);
+    if (!id && !name) continue;
+    const value = id ? `id:${id}` : `name:${name}`;
+    if (!handlers.has(value)) handlers.set(value, { value, label: id ? directory.get(id) || name || `历史处理人(${id})` : name });
+  }
+  return handlers.size ? [...handlers.values()] : [{ value: 'unassigned', label: '未指派' }];
+}
+export function faultInventory(operation: unknown, vehicle: unknown, exists: boolean): string {
+  if (!exists || !text(operation)) return '未知';
+  if (!['3', '4', '可运营', '待运营', '在库'].includes(text(operation))) return '不适用';
+  if (text(vehicle) === '14') return '异动';
+  if (text(vehicle) === '4') return '待交车';
+  return ['3', '可运营'].includes(text(operation)) ? '可运营' : ['4', '待运营'].includes(text(operation)) ? '待运营' : '未分类';
+}
+export function mapFault(row: RawFault, directory: Map<string, string>): ScopedFault {
+  const customer = text(row.customer_name);
+  const city = text(row.city_name) || text(row.operation_city) || '未知';
+  const rawModel = text(row.model_name);
+  const brands: Record<string, string> = { hyundai: /帕力安|冷链|双飞翼/.test(rawModel) ? '帕力安牌' : '现代', yuejin: '跃进', feichi: '飞驰', sulong: '苏龙', higer: '海格', dongfeng: '东风', yutong: '宇通', chufeng: '楚风', tonghua: '通华', maxus: '大通', mingwei: '明威', wanfeng: '万风', shujie: '舒捷', denza: '腾势', hongyan: '红岩', 'yuanchang brand': '远程牌', others: '其他' };
+  const ownership = ({ '0': '自有', '1': '挂靠', '2': '外租', '3': '自有' } as Record<string, string>)[text(row.vehicle_source)] || text(row.actual_ownership);
+  const model = deriveModelTag(brands[text(row.brand)] || text(row.brand), rawModel, text(row.body_color), ownership, text(row.rental_company));
+  const type = deriveType(rawModel, text(row.model_type));
+  const operation = text(row.operation_status);
+  const operating = ['1', '2', '租赁', '自营'].includes(operation);
+  const inventory = ['3', '4', '可运营', '待运营', '在库'].includes(operation);
+  const unlinkedInventory = !customer && !!row.matched_vehicle_id && inventory;
+  const customerKey = customer ? createHash('sha256').update(customer).digest('hex') : unlinkedInventory ? 'inventory-unlinked' : 'unlinked';
+  const operationKind = ({ '1': '租赁', '2': '自营', '3': '可运营', '4': '待运营', '5': '退出运营' } as Record<string, string>)[operation] || operation || '未分类';
+  const inventoryLabel = faultInventory(operation, row.vehicle_status, !!row.matched_vehicle_id);
+  const assetCell: AssetAnalysisCell = {
+    type: !row.matched_vehicle_id ? '未知车型' : type === '4.5T' ? (model.includes('冷链') ? '4.5T冷链' : '4.5T普货') : ['18T', '49T'].includes(type) ? type : '其他',
+    model, city, region: mapMacroRegion(text(row.province_name), city),
+    assetStatus: operating ? 'operating' : inventory ? 'inventory' : 'other',
+    assetDisposition: inventory ? '在库' : operating ? (operationKind === '租赁' ? '租赁' : '自营') : '其他', operationKind,
+    inventoryState: ({ '异动': 'abnormal', '待交车': 'pending', '可运营': 'available', '待运营': 'awaiting', '未分类': 'unclassified' } as Record<string, AssetAnalysisCell['inventoryState']>)[inventoryLabel] || 'not-applicable',
+    department: model === '公务车/挂靠车' ? '公务车' : text(row.business_dept) || '未分配部门',
+    manager: text(row.business_manager) || '未分配', customer: customerKey, abnormalType: '不适用', abnormalAge: 'unknown', quantity: 1,
+  };
+  return {
+    id: text(row.id), code: text(row.fault_code), plate: text(row.plate_number) || '未关联车辆',
+    description: text(row.fault_desc), reportedAt: text(row.reported_at) || null, archivedAt: text(row.archived_at) || null, deadlineAt: text(row.deadline_at) || null, receivedAt: text(row.received_at) || null,
+    city, status: normalizeFaultStatus(row.handling_status), assetCell,
+    inventory: faultInventory(row.operation_status, row.vehicle_status, !!row.matched_vehicle_id),
+    customer: customerKey,
+    customerLabel: maskCustomerName(customer) || (unlinkedInventory ? '库存车' : '未关联客户'), department: text(row.business_dept) || '未关联部门',
+    departmentName: text(row.business_dept), managerId: text(row.manager_id), subject: text(row.subject),
+    missingVehicle: !row.matched_vehicle_id, handlers: faultHandlers(row, directory),
+  };
+}
+export function visibleFaults(rows: ScopedFault[], user: AuthUser, subject?: string): ScopedFault[] {
+  // Fault history never inherits the public-inventory exception for current assets.
+  const candidates = user.permissionLevel === 'full' ? rows : rows.filter(row => !row.missingVehicle);
+  const scoped = user.permissionLevel === 'department' && !user.depName ? [] : filterByPermission(candidates, user);
+  return scoped.filter(row => !subject || row.subject === subject);
+}
+export function parseFaultQuery(params: Record<string, string>, now = new Date()): FaultQuery {
+  const today = new Date(now.getTime() + 8 * 3600000).toISOString().slice(0, 10);
+  const start = params.start || new Date(Date.parse(today) - 29 * 86400000).toISOString().slice(0, 10);
+  const end = params.end || today;
+  const valid = (s: string) => /^\d{4}-\d{2}-\d{2}$/.test(s) && Number.isFinite(Date.parse(s)) && new Date(s).toISOString().slice(0, 10) === s;
+  if (!valid(start) || !valid(end) || start > end || (Date.parse(end) - Date.parse(start)) / 86400000 > 365) throw new Error('日期范围须为有效日期，且不超过366天');
+  if (params.day && (!valid(params.day) || params.day < start || params.day > end)) throw new Error('明细日期超出统计范围');
+  const groupBy = params.groupBy || 'city';
+  if (!(groupBy in FAULT_DIMENSIONS) || !Object.hasOwn(FAULT_DIMENSIONS, groupBy)) throw new Error('无效统计维度');
+  const metric = params.metric || 'open';
+  if (!['reported', 'closed', 'open'].includes(metric)) throw new Error('无效统计指标');
+  const page = Number(params.page || 1);
+  if (!Number.isSafeInteger(page) || page < 1) throw new Error('无效页码');
+  return { start, end, groupBy: groupBy as FaultDimension, metric: metric as FaultQuery['metric'], page,
+    day: params.day, groupValue: params.groupValue, subject: params.subject,
+    filters: Object.fromEntries(Object.keys(FAULT_DIMENSIONS).filter(key => params[key]).map(key => [key, params[key]])) };
+}
+const dimensions = Object.keys(FAULT_DIMENSIONS) as FaultDimension[];
+function values(row: ScopedFault, dimension: FaultDimension): FaultOption[] {
+  return dimension === 'handler' ? row.handlers : [{ value: row[dimension], label: dimension === 'customer' ? row.customerLabel : row[dimension] }];
+}
+export function analyzeFaults(visible: ScopedFault[], query: FaultQuery, updatedAt: string): FaultResponse {
+  const options = Object.fromEntries(dimensions.map(d => [d, [...new Map(visible.flatMap(row => values(row, d)).map(o => [o.value, o])).values()].sort((a, b) => a.label.localeCompare(b.label, 'zh-CN'))])) as FaultResponse['options'];
+  const rows = visible.filter(row => dimensions.every(d => !query.filters[d] || values(row, d).some(o => o.value === query.filters[d])));
+  const inRange = (time: string | null) => !!time && time.slice(0, 10) >= query.start && time.slice(0, 10) <= query.end;
+  const counts = (row: ScopedFault) => ({ reported: Number(inRange(row.reportedAt)), closed: Number(row.status === '已归档' && inRange(row.archivedAt)), open: Number(isOpenFault(row.status)) });
+  const totals = { reported: 0, closed: 0, open: 0 };
+  const groups = new Map<string, FaultResponse['groups'][number]>();
+  const daily = new Map<string, FaultResponse['daily'][number]>();
+  for (let ts = Date.parse(query.start); ts <= Date.parse(query.end); ts += 86400000) {
+    const date = new Date(ts).toISOString().slice(0, 10); daily.set(date, { date, reported: 0, closed: 0 });
+  }
+  for (const row of rows) {
+    const count = counts(row);
+    for (const key of ['reported', 'closed', 'open'] as const) totals[key] += count[key];
+    if (count.reported) daily.get(row.reportedAt!.slice(0, 10))!.reported++;
+    if (count.closed) daily.get(row.archivedAt!.slice(0, 10))!.closed++;
+    if (!count.reported && !count.closed && !count.open) continue;
+    for (const option of values(row, query.groupBy)) {
+      const group = groups.get(option.value) || { ...option, reported: 0, closed: 0, open: 0 };
+      for (const key of ['reported', 'closed', 'open'] as const) group[key] += count[key];
+      groups.set(option.value, group);
+    }
+  }
+  const details = rows.filter(row => counts(row)[query.metric] &&
+    (query.metric === 'open' || !query.day || (query.metric === 'reported' ? row.reportedAt : row.archivedAt)?.slice(0, 10) === query.day) &&
+    (!query.groupValue || values(row, query.groupBy).some(o => o.value === query.groupValue)))
+    .sort((a, b) => (query.metric === 'closed' ? b.archivedAt || '' : b.reportedAt || '').localeCompare(query.metric === 'closed' ? a.archivedAt || '' : a.reportedAt || '') || b.id.localeCompare(a.id));
+  const pageSize = 50;
+  const page = Math.min(query.page, Math.max(1, Math.ceil(details.length / pageSize)));
+  return { start: query.start, end: query.end, updatedAt, totals, daily: [...daily.values()],
+    groups: [...groups.values()].sort((a, b) => b.open - a.open || b.reported - a.reported || a.label.localeCompare(b.label, 'zh-CN')), options,
+    quality: { missingReport: rows.filter(r => !r.reportedAt).length,
+      invalidChronology: rows.filter(r => r.reportedAt && r.archivedAt && r.archivedAt < r.reportedAt).length,
+      missingVehicle: rows.filter(r => r.missingVehicle).length },
+    details: { rows: details.slice((page - 1) * pageSize, page * pageSize).map(({ subject, departmentName, managerId, missingVehicle, assetCell, ...row }) => row), total: details.length, page, pageSize },
+  };
+}
+
+export function faultBusinessDate(updatedAt: string): string {
+  return new Date(Date.parse(updatedAt) + 8 * 3600000).toISOString().slice(0, 10);
+}
+export function isOverdueFault(row: FaultRecord, updatedAt: string): boolean {
+  // OneOS supervisor aggregate: stored deadline only, suspended clock excluded, strict < NOW().
+  if (!['待处理', '处理中'].includes(row.status) || !row.deadlineAt) return false;
+  const deadline = Date.parse(`${row.deadlineAt.replace(' ', 'T')}+08:00`);
+  return Number.isFinite(deadline) && deadline < Date.parse(updatedAt);
+}
+export function selectFaultMetric(rows: ScopedFault[], metric: import('../../../shared/assets/faults.js').FaultOverviewMetric, date: string, updatedAt: string) {
+  return rows.filter(row => {
+    switch (metric) {
+      case 'ledger': return true;
+      // Current BI definition: in progress = waiting + processing; suspended remains in the ledger.
+      case 'open': return ['待处理', '处理中'].includes(row.status);
+      case 'waiting': return row.status === '待处理';
+      case 'processing': return row.status === '处理中';
+      case 'suspended': return row.status === '挂起';
+      case 'overdue': return isOverdueFault(row, updatedAt);
+      case 'reported': return row.reportedAt?.slice(0, 10) === date;
+      case 'closed': return row.status === '已归档' && row.archivedAt?.slice(0, 10) === date;
+    }
+  });
+}
+export function faultOverview(rows: ScopedFault[], updatedAt: string): import('../../../shared/assets/faults.js').FaultOverview {
+  const date = faultBusinessDate(updatedAt);
+  return { date, updatedAt, totals: Object.fromEntries(
+    (Object.keys(FAULT_OVERVIEW_METRICS) as import('../../../shared/assets/faults.js').FaultOverviewMetric[])
+      .map(metric => [metric, selectFaultMetric(rows, metric, date, updatedAt).length]),
+  ) as import('../../../shared/assets/faults.js').FaultOverview['totals'] };
+}
+export function faultAnalysis(rows: ScopedFault[], metric: import('../../../shared/assets/faults.js').FaultOverviewMetric, updatedAt: string): import('../../../shared/assets/faults.js').FaultAnalysisResponse {
+  const date = faultBusinessDate(updatedAt);
+  const selected = selectFaultMetric(rows, metric, date, updatedAt);
+  return { date, updatedAt, metric, customerLabels: Object.fromEntries(selected.map(row => [row.customer, row.customerLabel])),
+    rows: selected.map(({ subject, departmentName, managerId, missingVehicle, assetCell, ...row }) => ({ ...row, cell: assetCell })) };
+}
diff --git a/src/server/routes/asset-faults/repository.ts b/src/server/routes/asset-faults/repository.ts
new file mode 100644
index 0000000..e64e808
--- /dev/null
+++ b/src/server/routes/asset-faults/repository.ts
@@ -0,0 +1,67 @@
+import type { RowDataPacket } from 'mysql2';
+import pool from '../../db.js';
+import { mapFault, type RawFault } from './model.js';
+
+// OneOS fault ledger: latest delivery first; do not reuse the active-asset WHERE clause.
+export const FAULT_SQL = `SELECT
+  CAST(f.id AS CHAR) id, f.fault_code, f.plate_number, f.fault_desc, f.handling_status,
+  DATE_FORMAT(f.fault_report_time, '%Y-%m-%d %H:%i:%s') reported_at,
+  DATE_FORMAT(f.archived_at, '%Y-%m-%d %H:%i:%s') archived_at,
+  DATE_FORMAT(f.deadline_at, '%Y-%m-%d %H:%i:%s') deadline_at,
+  DATE_FORMAT(receipt.received_at, '%Y-%m-%d %H:%i:%s') received_at,
+  CAST(vi.id AS CHAR) matched_vehicle_id, vi.operation_city,
+  COALESCE(city.NAME, district.NAME) city_name, vi.registered_ownership subject,
+  COALESCE(province.NAME, vi.province_name) province_name,
+  vm.brand, vm.model model_name, vm.vehicle_type model_type, vi.body_color, vi.vehicle_source, vi.actual_ownership, vi.rental_company,
+  vs.operation_status, vs.vehicle_status, lease.customer_name, lease.business_dept,
+  lease.business_manager,
+  CAST(COALESCE(contract.business_manager_id, vi.business_id) AS CHAR) manager_id,
+  CAST(f.inspection_operator_id AS CHAR) handler_id, f.inspection_operator_name handler_name,
+  f.inspection_operator_ids_json handler_ids, f.inspection_operator_names_json handler_names,
+  CAST(wo.current_executor_user_id AS CHAR) work_id, wo.current_executor_name work_name,
+  CAST(wo.current_executor_user_ids_json AS CHAR) work_ids,
+  CAST(wo.current_executor_names_json AS CHAR) work_names
+FROM vehicle_fault_manage f
+LEFT JOIN (
+  SELECT fault_id, MIN(create_time) received_at
+  FROM vehicle_fault_operation_log
+  WHERE del_flag='0' AND action_code='SAVE_PROGRESS'
+    AND COALESCE(TRIM(before_status), '') IN ('', '待处理', '待处置', '未处理')
+    AND TRIM(after_status) IN ('处理中', '处置中', '处理')
+  GROUP BY fault_id
+) receipt ON receipt.fault_id=f.id
+LEFT JOIN vehicle_info vi ON vi.id=f.vehicle_id AND vi.del_flag='0'
+LEFT JOIN vehicle_model vm ON vm.id=vi.vehicle_model_id AND vm.del_flag='0'
+LEFT JOIN common_district province ON province.CODE=CONCAT(LEFT(vi.operation_city,2),'0000') COLLATE utf8mb4_unicode_ci AND province.STATUS='VALID'
+LEFT JOIN vehicle_status vs ON vs.id=(
+  SELECT s.id FROM vehicle_status s WHERE s.vehicle_id=vi.id AND s.del_flag=0
+  ORDER BY s.update_time DESC, s.id DESC LIMIT 1
+)
+LEFT JOIN vehicle_lease_order_record lease ON lease.id=(
+  SELECT r.id FROM vehicle_lease_order_record r WHERE r.vehicle_id=vi.id AND r.del_flag='0'
+  ORDER BY r.last_delivery_time DESC, r.id DESC LIMIT 1
+)
+LEFT JOIN vehicle_lease_contract_info contract ON contract.id=lease.contract_id AND contract.del_flag='0'
+LEFT JOIN common_district district ON district.CODE=vi.operation_city COLLATE utf8mb4_unicode_ci AND district.STATUS='VALID'
+LEFT JOIN common_district city ON city.CODE=(CASE
+  WHEN LEFT(vi.operation_city,2) IN ('11','12','31','50') THEN CONCAT(LEFT(vi.operation_city,2),'0000')
+  ELSE CONCAT(LEFT(vi.operation_city,4),'00') END) COLLATE utf8mb4_unicode_ci AND city.STATUS='VALID'
+LEFT JOIN task_work_order wo ON wo.id=f.source_work_order_id AND wo.del_flag='0'
+WHERE f.del_flag='0' AND f.is_submit IN (0,1)`;
+
+export async function loadFaults() {
+  const connection = await pool.getConnection();
+  try {
+    await connection.query('START TRANSACTION WITH CONSISTENT SNAPSHOT, READ ONLY');
+    const [raw] = await connection.query<RowDataPacket[]>({ sql: FAULT_SQL, timeout: 20000 });
+    const [users] = await connection.query<RowDataPacket[]>({ sql: `SELECT CAST(user_id AS CHAR) id, nick_name name
+      FROM \`ry-cloud\`.sys_user WHERE del_flag='0' AND status='0'
+      AND (user_type IS NULL OR user_type='sys_user')`, timeout: 10000 });
+    const directory = new Map<string, string>(users.map(row => [String(row.id), String(row.name || '').trim()]));
+    // Defensive ID de-duplication keeps imperfect lookup tables from multiplying tickets.
+    const rows = [...new Map(raw.map(row => [String(row.id), mapFault(row as RawFault, directory)])).values()];
+    return { rows, updatedAt: new Date().toISOString() };
+  } finally {
+    try { await connection.rollback(); } finally { connection.release(); }
+  }
+}
diff --git a/src/server/routes/asset-faults/trend.test.ts b/src/server/routes/asset-faults/trend.test.ts
new file mode 100644
index 0000000..416ecf7
--- /dev/null
+++ b/src/server/routes/asset-faults/trend.test.ts
@@ -0,0 +1,61 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { Hono } from 'hono';
+import { mapFault, type ScopedFault } from './model.js';
+import { faultTrend, faultTrendAnalysis, parseFaultTrendQuery } from './trend.js';
+import { createFaultRouter } from './index.js';
+import type { AuthUser } from '../../auth/types.js';
+const at = '2026-10-13T08:00:00Z';
+const row = (id: string, reported: string | null, status: string, archived: string | null = null): ScopedFault => mapFault({ id, reported_at: reported, handling_status: status, archived_at: archived, matched_vehicle_id: 'v1' }, new Map());
+const rows = [row('a', '2026-09-30 23:59:59', '已归档', '2026-10-12 12:00:00'),
+  row('b', '2026-10-01 00:00:00', '处理中'), row('c', '2026-10-01 08:00:00', '挂起'),
+  row('d', '2026-10-03 23:59:59', '待处理'), row('before', '2026-09-29 23:59:59', '已归档', '2026-10-02 00:00:00'),
+  row('after', '2026-10-04 00:00:00', '已归档'), row('missing', null, '已归档')];
+const query = (params: Record<string, string> = {}) => parseFaultTrendQuery({ start: '2026-09-30', end: '2026-10-03', ...params });
+
+test('按提报日统计同批新增的当前闭环情况，跨期归档仍属于原提报批次，空日补零', () => {
+  const data = faultTrend(rows, query(), at);
+  assert.deepEqual(data.totals, { reported: 4, closed: 1, unclosed: 3 });
+  assert.deepEqual(data.periods.map(p => [p.period, p.reported, p.closed, p.unclosed]), [
+    ['2026-09-30', 1, 1, 0], ['2026-10-01', 2, 0, 2], ['2026-10-02', 0, 0, 0], ['2026-10-03', 1, 0, 1],
+  ]);
+  for (const period of data.periods) assert.equal(period.reported, period.closed + period.unclosed);
+  assert.equal(data.periods.reduce((sum, p) => sum + p.reported, 0), data.totals.reported);
+});
+test('按月不扩展所选首尾边界，日月总数一致；汇总与各期下钻匹配', () => {
+  const data = faultTrend(rows, query({ granularity: 'month' }), at);
+  assert.deepEqual(data.totals, faultTrend(rows, query(), at).totals);
+  assert.deepEqual(data.periods.map(p => [p.period, p.reported]), [['2026-09', 1], ['2026-10', 3]]);
+  for (const granularity of ['day', 'month']) {
+    for (const period of faultTrend(rows, query({ granularity }), at).periods) {
+      for (const [status, key] of [['all', 'reported'], ['closed', 'closed'], ['unclosed', 'unclosed']] as const) {
+        assert.equal(faultTrendAnalysis(rows, query({ granularity, period: period.period, status }), at).rows.length, period[key]);
+      }
+    }
+  }
+});
+test('空范围、闰日、非法周期及370天范围限制', () => {
+  assert.equal(faultTrend([], query(), at).periods.length, 4);
+  assert.deepEqual(faultTrend([], query(), at).totals, { reported: 0, closed: 0, unclosed: 0 });
+  assert.doesNotThrow(() => query({ start: '2024-02-29', end: '2024-02-29' }));
+  const invalid: Record<string, string>[] = [{ start: '2026-02-30' }, { end: '2026-01-01' }, { granularity: 'year' }, { status: '__proto__' },
+    { period: '2026-09-29' }, { granularity: 'month', period: '2026-13' }, { start: '2025-01-01' }];
+  for (const params of invalid) assert.throws(() => query(params));
+});
+test('趋势和下钻都先应用人员权限，未认证及无效参数不查询数据库', async () => {
+  let calls = 0;
+  const own = { ...rows[0], managerId: 'mine' }, hidden = { ...rows[1], managerId: 'secret', code: 'PRIVATE' };
+  const router = createFaultRouter(async () => { calls++; return { updatedAt: at, rows: [own, hidden] }; });
+  assert.equal((await router.request('/trend')).status, 401);
+  assert.equal((await router.request('/trend-analysis')).status, 401);
+  const user: AuthUser = { userId: 'mine', userName: 'User', loginName: 'user', depCode: '', depName: '', permissionLevel: 'personal', roles: [] };
+  const app = new Hono<{ Variables: { user: AuthUser } }>();
+  app.use('*', async (c, next) => { c.set('user', user); await next(); }); app.route('/faults', router);
+  assert.equal((await app.request('/faults/trend?start=bad')).status, 400); assert.equal(calls, 0);
+  const params = '?start=2026-09-30&end=2026-10-03&granularity=month';
+  const response = await app.request(`/faults/trend${params}`);
+  assert.equal(response.headers.get('Cache-Control'), 'no-store');
+  const data = await response.json(); assert.equal(data.totals.reported, 1);
+  const detail = await (await app.request(`/faults/trend-analysis${params}&period=2026-09&status=closed`)).json();
+  assert.equal(detail.rows.length, 1); assert.ok(!JSON.stringify(detail).includes('PRIVATE'));
+});
diff --git a/src/server/routes/asset-faults/trend.ts b/src/server/routes/asset-faults/trend.ts
new file mode 100644
index 0000000..f112fc5
--- /dev/null
+++ b/src/server/routes/asset-faults/trend.ts
@@ -0,0 +1,42 @@
+import type { FaultTrendQuery, FaultTrendResponse } from '../../../shared/assets/faults.js';
+import { faultAnalysis, parseFaultQuery, type ScopedFault } from './model.js';
+
+export function parseFaultTrendQuery(params: Record<string, string>): FaultTrendQuery {
+  const defaults = parseFaultQuery({});
+  const start = params.start || defaults.start, end = params.end || defaults.end;
+  const valid = (value: string) => /^\d{4}-\d{2}-\d{2}$/.test(value) && Number.isFinite(Date.parse(value)) && new Date(value).toISOString().slice(0, 10) === value;
+  if (!valid(start) || !valid(end) || start > end || Date.parse(end) - Date.parse(start) > 369 * 86400000) throw new Error('请选择有效日期范围，最多370天');
+  const granularity = params.granularity || 'day';
+  if (granularity !== 'day' && granularity !== 'month') throw new Error('无效时间粒度');
+  const status = params.status || 'all';
+  if (!['all', 'closed', 'unclosed'].includes(status)) throw new Error('无效闭环状态');
+  const length = granularity === 'day' ? 10 : 7;
+  if (params.period && (params.period.length !== length || params.period < start.slice(0, length) || params.period > end.slice(0, length)
+    || !(granularity === 'day' ? valid(params.period) : valid(`${params.period}-01`)))) throw new Error('统计周期超出所选范围');
+  return { start, end, granularity, status: status as FaultTrendQuery['status'], period: params.period };
+}
+export function selectFaultCohort(rows: ScopedFault[], query: FaultTrendQuery) {
+  return rows.filter(row => {
+    const day = row.reportedAt?.slice(0, 10);
+    return day && day >= query.start && day <= query.end
+      && (!query.period || day.slice(0, query.granularity === 'day' ? 10 : 7) === query.period)
+      && (query.status === 'all' || (row.status === '已归档') === (query.status === 'closed'));
+  });
+}
+export function faultTrend(rows: ScopedFault[], query: FaultTrendQuery, updatedAt: string): FaultTrendResponse {
+  const periods = new Map<string, FaultTrendResponse['periods'][number]>();
+  for (let time = Date.parse(query.start); time <= Date.parse(query.end); time += 86400000) {
+    const period = new Date(time).toISOString().slice(0, query.granularity === 'day' ? 10 : 7);
+    if (!periods.has(period)) periods.set(period, { period, reported: 0, closed: 0, unclosed: 0 });
+  }
+  const totals = { reported: 0, closed: 0, unclosed: 0 };
+  for (const row of selectFaultCohort(rows, { ...query, status: 'all', period: undefined })) {
+    const period = periods.get(row.reportedAt!.slice(0, query.granularity === 'day' ? 10 : 7))!;
+    const status = row.status === '已归档' ? 'closed' : 'unclosed';
+    period.reported++; period[status]++; totals.reported++; totals[status]++;
+  }
+  return { start: query.start, end: query.end, granularity: query.granularity, updatedAt, totals, periods: [...periods.values()] };
+}
+export function faultTrendAnalysis(rows: ScopedFault[], query: FaultTrendQuery, updatedAt: string) {
+  return faultAnalysis(selectFaultCohort(rows, query), 'ledger', updatedAt);
+}
diff --git a/src/server/routes/asset-faults/weekly-report.test.ts b/src/server/routes/asset-faults/weekly-report.test.ts
new file mode 100644
index 0000000..1303311
--- /dev/null
+++ b/src/server/routes/asset-faults/weekly-report.test.ts
@@ -0,0 +1,52 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { Hono } from 'hono';
+import { mapFault, type ScopedFault } from './model.js';
+import { faultWeeklyReport, faultWeeklyAnalysis, parseFaultWeeklyQuery } from './weekly-report.js';
+import { createFaultRouter } from './index.js';
+import type { AuthUser } from '../../auth/types.js';
+const at = '2026-10-13T08:00:00Z';
+const query = (params: Record<string, string> = {}) => parseFaultWeeklyQuery({ start: '2026-10-10', end: '2026-10-16', ...params });
+const fault = (id: string, fields: Record<string, unknown> = {}): ScopedFault => mapFault({ id, matched_vehicle_id: 'v1', ...fields }, new Map());
+const rows = [fault('old', { reported_at: '2026-09-01 08:00:00', received_at: '2026-10-10 00:00:00', archived_at: '2026-10-13 23:59:59', handling_status: '已归档' }),
+  fault('new', { reported_at: '2026-10-10 23:59:59', received_at: '2026-10-11 00:00:00', handling_status: '挂起' }),
+  fault('missing', { handling_status: '处理中' }),
+  fault('before', { received_at: '2026-10-09 23:59:59' }),
+  fault('after', { reported_at: '2026-10-17 00:00:00', received_at: '2026-10-17 00:00:00' }),
+  fault('not-archived', { archived_at: '2026-10-12 08:00:00', handling_status: '处理中' })];
+
+test('周报按各自事件日期独立统计，历史提报可本周接收与闭环，缺事件时间不推断', () => {
+  const result = faultWeeklyReport(rows, query(), at);
+  assert.deepEqual(result.totals, { reported: 1, received: 2, closed: 1 });
+  assert.equal(result.days.length, 7);
+  assert.deepEqual(result.days[0], { date: '2026-10-10', reported: 1, received: 1, closed: 0 });
+  assert.equal(result.days[1].received, 1); assert.equal(result.days[3].closed, 1);
+  assert.deepEqual(result.days[6], { date: '2026-10-16', reported: 0, received: 0, closed: 0 });
+  for (const metric of ['reported', 'received', 'closed'] as const) {
+    assert.equal(result.totals[metric], result.days.reduce((n, day) => n + day[metric], 0));
+    assert.equal(faultWeeklyAnalysis(rows, query({ metric }), at).rows.length, result.totals[metric]);
+    for (const day of result.days) assert.equal(faultWeeklyAnalysis(rows, query({ metric, day: day.date }), at).rows.length, day[metric]);
+  }
+  assert.equal(faultWeeklyAnalysis(rows, query({ metric: 'received', day: '2026-10-11' }), at).rows[0].receivedAt, '2026-10-11 00:00:00');
+});
+test('周报时间与指标校验，自选单日和无数据日期补零', () => {
+  const invalid: Record<string, string>[] = [{ metric: '__proto__' }, { start: 'bad' }, { end: '2026-01-01' }, { day: '2026-10-17' }, { day: '2026-10' }];
+  for (const params of invalid) assert.throws(() => query(params));
+  const single = faultWeeklyReport([], query({ start: '2026-10-13', end: '2026-10-13' }), at);
+  assert.deepEqual(single.days, [{ date: '2026-10-13', reported: 0, received: 0, closed: 0 }]);
+});
+test('周报汇总和接收处理下钻先过滤权限，未认证与无效参数不查询', async () => {
+  let calls = 0;
+  const router = createFaultRouter(async () => { calls++; return { updatedAt: at, rows: [{ ...rows[0], managerId: 'mine' }, { ...rows[1], managerId: 'other', code: 'PRIVATE' }] }; });
+  for (const path of ['/weekly-report', '/weekly-report-analysis']) assert.equal((await router.request(path)).status, 401);
+  const user: AuthUser = { userId: 'mine', userName: 'User', loginName: 'user', depCode: '', depName: '', permissionLevel: 'personal', roles: [] };
+  const app = new Hono<{ Variables: { user: AuthUser } }>();
+  app.use('*', async (c, next) => { c.set('user', user); await next(); }); app.route('/faults', router);
+  assert.equal((await app.request('/faults/weekly-report?start=bad')).status, 400); assert.equal(calls, 0);
+  const params = '?start=2026-10-10&end=2026-10-16&metric=received';
+  const response = await app.request(`/faults/weekly-report${params}`);
+  assert.equal(response.headers.get('Cache-Control'), 'no-store');
+  const data = await response.json(); assert.equal(data.totals.received, 1);
+  const detail = await (await app.request(`/faults/weekly-report-analysis${params}`)).json();
+  assert.equal(detail.rows.length, 1); assert.ok(!JSON.stringify(detail).includes('PRIVATE'));
+});
diff --git a/src/server/routes/asset-faults/weekly-report.ts b/src/server/routes/asset-faults/weekly-report.ts
new file mode 100644
index 0000000..7237469
--- /dev/null
+++ b/src/server/routes/asset-faults/weekly-report.ts
@@ -0,0 +1,31 @@
+import { FAULT_WEEKLY_METRICS, type FaultWeeklyQuery, type FaultWeeklyResponse } from '../../../shared/assets/faults.js';
+import { faultAnalysis, type ScopedFault } from './model.js';
+import { parseFaultTrendQuery } from './trend.js';
+
+export function parseFaultWeeklyQuery(params: Record<string, string>): FaultWeeklyQuery {
+  const range = parseFaultTrendQuery({ start: params.start, end: params.end, granularity: 'day', period: params.day });
+  const metric = params.metric || 'reported';
+  if (!Object.hasOwn(FAULT_WEEKLY_METRICS, metric)) throw new Error('无效周报指标');
+  return { start: range.start, end: range.end, day: range.period, metric: metric as FaultWeeklyQuery['metric'] };
+}
+function eventDay(row: ScopedFault, metric: FaultWeeklyQuery['metric']) {
+  return (metric === 'reported' ? row.reportedAt : metric === 'received' ? row.receivedAt : row.status === '已归档' ? row.archivedAt : null)?.slice(0, 10);
+}
+export function faultWeeklyReport(rows: ScopedFault[], query: FaultWeeklyQuery, updatedAt: string): FaultWeeklyResponse {
+  const days = new Map<string, FaultWeeklyResponse['days'][number]>();
+  for (let time = Date.parse(query.start); time <= Date.parse(query.end); time += 86400000) {
+    const date = new Date(time).toISOString().slice(0, 10); days.set(date, { date, reported: 0, received: 0, closed: 0 });
+  }
+  const totals = { reported: 0, received: 0, closed: 0 };
+  for (const row of rows) for (const metric of Object.keys(FAULT_WEEKLY_METRICS) as FaultWeeklyQuery['metric'][]) {
+    const day = days.get(eventDay(row, metric) || '');
+    if (day) { day[metric]++; totals[metric]++; }
+  }
+  return { start: query.start, end: query.end, updatedAt, totals, days: [...days.values()] };
+}
+export function faultWeeklyAnalysis(rows: ScopedFault[], query: FaultWeeklyQuery, updatedAt: string) {
+  return faultAnalysis(rows.filter(row => {
+    const date = eventDay(row, query.metric);
+    return date && date >= query.start && date <= query.end && (!query.day || date === query.day);
+  }), 'ledger', updatedAt);
+}
diff --git a/src/shared/assets/faults.ts b/src/shared/assets/faults.ts
new file mode 100644
index 0000000..4af5a44
--- /dev/null
+++ b/src/shared/assets/faults.ts
@@ -0,0 +1,65 @@
+import type { AssetAnalysisCell } from './analytics';
+
+export const FAULT_DIMENSIONS = {
+  city: '运营城市', status: '故障状态', inventory: '库存状态',
+  customer: '客户名称', department: '业务部门', handler: '运维处置人',
+} as const;
+export type FaultDimension = keyof typeof FAULT_DIMENSIONS;
+export type FaultMetric = 'reported' | 'closed' | 'open';
+export interface FaultOption { value: string; label: string }
+export interface FaultCounts { reported: number; closed: number; open: number }
+export interface FaultRecord {
+  id: string; code: string; plate: string; description: string;
+  reportedAt: string | null; archivedAt: string | null; deadlineAt: string | null; receivedAt: string | null;
+  city: string; status: string; inventory: string;
+  customer: string; customerLabel: string; department: string;
+  handlers: FaultOption[];
+}
+export interface FaultQuery {
+  start: string; end: string; groupBy: FaultDimension;
+  filters: Partial<Record<FaultDimension, string>>;
+  metric: FaultMetric; day?: string; groupValue?: string; page: number;
+  subject?: string;
+}
+export interface FaultResponse {
+  start: string; end: string; updatedAt: string;
+  totals: FaultCounts;
+  daily: { date: string; reported: number; closed: number }[];
+  groups: (FaultOption & FaultCounts)[];
+  options: Record<FaultDimension, FaultOption[]>;
+  quality: { missingReport: number; invalidChronology: number; missingVehicle: number };
+  details: { rows: FaultRecord[]; total: number; page: number; pageSize: number };
+}
+
+export const FAULT_OVERVIEW_METRICS = { reported: '今日新增', closed: '本日解决', open: '当前在办', waiting: '待处理', processing: '处理中', suspended: '挂起', overdue: '逾期', ledger: '累计台账' } as const;
+export type FaultOverviewMetric = keyof typeof FAULT_OVERVIEW_METRICS;
+export interface FaultOverview {
+  date: string; updatedAt: string;
+  totals: Record<FaultOverviewMetric, number>;
+}
+export interface FaultAnalysisRecord extends FaultRecord { cell: AssetAnalysisCell }
+export interface FaultAnalysisResponse {
+  date: string; updatedAt: string; metric: FaultOverviewMetric; rows: FaultAnalysisRecord[];
+  customerLabels: Record<string, string>;
+}
+
+export type FaultTrendStatus = 'all' | 'closed' | 'unclosed';
+export interface FaultTrendQuery {
+  start: string; end: string; granularity: 'day' | 'month';
+  status: FaultTrendStatus; period?: string;
+}
+export interface FaultTrendCounts { reported: number; closed: number; unclosed: number }
+export interface FaultTrendResponse {
+  start: string; end: string; granularity: 'day' | 'month'; updatedAt: string;
+  totals: FaultTrendCounts;
+  periods: (FaultTrendCounts & { period: string })[];
+}
+
+export const FAULT_WEEKLY_METRICS = { reported: '新增故障', received: '接收处理数量', closed: '解决故障' } as const;
+export type FaultWeeklyMetric = keyof typeof FAULT_WEEKLY_METRICS;
+export interface FaultWeeklyQuery { start: string; end: string; metric: FaultWeeklyMetric; day?: string }
+export interface FaultWeeklyResponse {
+  start: string; end: string; updatedAt: string;
+  totals: Record<FaultWeeklyMetric, number>;
+  days: (Record<FaultWeeklyMetric, number> & { date: string })[];
+}
diff --git a/vite.config.ts b/vite.config.ts
index ae06d0d..f65faf0 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -7,6 +7,8 @@ export default defineConfig({
   resolve: { alias: { '@': fileURLToPath(new URL('./src', import.meta.url)) } },
   plugins: [react(), tailwindcss()],
   server: {
+    host: '0.0.0.0',
+    allowedHosts: ['qunfa.lnoneos.com'],
     // Preview requests append audit logs; watching them creates a reload/request loop.
     watch: { ignored: ['**/logs/**'] },
     proxy: {