diff --git a/.trellis/tasks/archive/2026-08/08-12-vehicle-incident-info/check.jsonl b/.trellis/tasks/archive/2026-08/08-12-vehicle-incident-info/check.jsonl
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+{"_example": "Fill with {\"file\": \"<path>\", \"reason\": \"<why>\"}. Put spec/research files only — no code paths. Run `python3 .trellis/scripts/get_context.py --mode packages` to list available specs. Delete this line once real entries are added."}
diff --git a/.trellis/tasks/archive/2026-08/08-12-vehicle-incident-info/design.md b/.trellis/tasks/archive/2026-08/08-12-vehicle-incident-info/design.md
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+# Design: Vehicle Incident And Information Preview
+
+## Boundary
+
+This is browser-only Cesium preview state. It changes neither generated OSM data nor `package/` assets.
+Vehicle routes and models remain `_preview/` resources; refresh resets all vehicle event state.
+
+## Data Model
+
+Each object returned by `addCruiseVehicle()` gains:
+
+```js
+{
+  id: "vehicle-1",
+  modelName: "car_a01_002",
+  status: "normal" | "breakdown" | "accident",
+  incidentNote: "",
+  motion: { state },
+  markerEntity
+}
+```
+
+The current route distance remains the single motion source. The clock tick leaves it unchanged while
+status is not `normal`; returning to normal resumes from that position.
+
+## Interaction Flow
+
+1. Vehicle Cesium Entities carry a `vehicleId` property.
+2. A `ScreenSpaceEventHandler` picks a clicked entity, resolves its vehicle, synchronizes the existing
+   vehicle selector, and opens a positioned information card.
+3. The card displays vehicle number, model family, route label/length, configured speed, state, and note.
+4. Card controls set normal/breakdown/accident and persist only in the in-memory vehicle object.
+5. State changes update marker visibility, the route material, card content, and Cesium render request.
+
+## Visual Contract
+
+- Normal: no marker; original route color; motion active.
+- Breakdown: yellow wrench label above the vehicle; route retains its original color; motion frozen.
+- Accident: red warning-triangle label above the vehicle; route material becomes red; motion frozen.
+- Marker positions use the same vehicle `CallbackProperty`, so they move with the vehicle before an event
+  and remain at the incident location while stopped.
+
+## Compatibility And Risks
+
+- Picking must ignore routes, static models, and signal entities.
+- No route must retain the existing disabled cruise controls and never show a card.
+- The card must be HTML/CSS UI, not Cesium InfoBox, because the viewer deliberately disables InfoBox.
+- The feature must not alter signal runtime behavior or vehicle asset URLs.
diff --git a/.trellis/tasks/archive/2026-08/08-12-vehicle-incident-info/implement.jsonl b/.trellis/tasks/archive/2026-08/08-12-vehicle-incident-info/implement.jsonl
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+{"_example": "Fill with {\"file\": \"<path>\", \"reason\": \"<why>\"}. Put spec/research files only — no code paths. Run `python3 .trellis/scripts/get_context.py --mode packages` to list available specs. Delete this line once real entries are added."}
diff --git a/.trellis/tasks/archive/2026-08/08-12-vehicle-incident-info/implement.md b/.trellis/tasks/archive/2026-08/08-12-vehicle-incident-info/implement.md
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+# Implementation Plan
+
+1. Add an initially hidden vehicle information card to `area-preview.js` and responsive card styles to
+   `cesium-preview.css`.
+2. Extend the browser runtime vehicle records with stable identity, parsed model metadata, incident status,
+   note, and a marker entity.
+3. Gate route-distance advancement on normal state; add status transition helper for marker, route material,
+   and card refresh.
+4. Add Cesium click picking and card controls. Keep the existing selector synchronized for follow/route use.
+5. Add focused assertions to `test-preview-assets.js` for card wiring, status behavior, and marker/route
+   contracts.
+6. Run syntax checks, preview test, stage test, target-area preview regeneration, and `check:area`.
+
+## Rollback
+
+Revert only the preview HTML/CSS/runtime/test files. No package, Blender, route, or OSM product files should
+need rollback.
diff --git a/.trellis/tasks/archive/2026-08/08-12-vehicle-incident-info/prd.md b/.trellis/tasks/archive/2026-08/08-12-vehicle-incident-info/prd.md
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+# Vehicle incident and information preview
+
+## Goal
+
+在 Cesium 验证预览中，让使用者能够查看每辆巡航车辆的基础信息，并人为标记车辆事故/故障状态，直观看到该状态对车辆和路线展示的影响。
+
+## Confirmed Facts
+
+- 车辆是 `scripts/lib/cesium-preview.js` 创建的 Cesium Entity；当前已有车型、路线、巡航速度、
+  跟随、显隐与路线选择。
+- 车辆模型和路线都属于 `_preview/` 验证资源，不是 area package 的下游资产契约。
+- 当前不存在车辆业务资料、事故状态、碰撞检测或自动事件推演。
+- 项目定位是资产生成与验证，不能将交通流/事故仿真作为本任务的范围。
+
+## Requirements
+
+- 每辆预览车辆必须有稳定的显示编号、车型、当前路线、设定速度和行驶状态。
+- 点击场景中的车辆后，必须弹出该车辆的信息卡，展示基础信息与当前事件状态；信息卡内完成状态与说明编辑。
+- 使用者必须能将选中车辆在正常、故障和事故状态之间切换，并能提供简短事件说明。
+- 故障和事故是不同状态：二者均停止巡航；故障使用黄色标记，事故使用红色标记并提示路线中断。
+- 故障使用车辆顶部黄色扳手标记；事故使用红色警示三角标记，并将该车辆当前路线改为红色。
+- 非正常车辆必须有可见的场景标记；恢复正常后继续按既有路线巡航。
+- 事故/故障仅在当前浏览器预览会话中存在；刷新或重建预览后不保留。
+
+## Out of Scope
+
+- 自动碰撞检测、车辆间物理碰撞、自动事故生成。
+- 信号配时、交通流、调度策略或持久化事件记录。
+- 向 `package/` 加入车辆、路线或事故数据。
+
+## Acceptance Criteria
+
+- [ ] 用户可点击任一可见车辆，弹出其基础信息、状态和事件说明；现有车辆选择控件仍可用于路线和跟随。
+- [ ] 用户可标记故障或事故，并看到车辆停止、状态文本和明显的场景标记。
+- [ ] 故障显示黄色扳手；事故显示红色警示三角且当前路线变红。
+- [ ] 用户可恢复正常，车辆继续其现有路线；其他车辆不受影响。
+- [ ] 无可用路线时，车辆信息和事故控件按既有禁用语义处理。
+- [ ] 预览资产、路线与现有信号灯 runtime 继续可加载；不新增下游 package 内容。
diff --git a/.trellis/tasks/archive/2026-08/08-12-vehicle-incident-info/task.json b/.trellis/tasks/archive/2026-08/08-12-vehicle-incident-info/task.json
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+++ b/.trellis/tasks/archive/2026-08/08-12-vehicle-incident-info/task.json
@@ -0,0 +1,26 @@
+{
+  "id": "vehicle-incident-info",
+  "name": "vehicle-incident-info",
+  "title": "Vehicle incident and information preview",
+  "description": "",
+  "status": "completed",
+  "dev_type": null,
+  "scope": null,
+  "package": null,
+  "priority": "P2",
+  "creator": "dingkang",
+  "assignee": "dingkang",
+  "createdAt": "2026-08-12",
+  "completedAt": "2026-08-12",
+  "branch": null,
+  "base_branch": "main",
+  "worktree_path": null,
+  "commit": null,
+  "pr_url": null,
+  "subtasks": [],
+  "children": [],
+  "parent": null,
+  "relatedFiles": [],
+  "notes": "",
+  "meta": {}
+}
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