feat: HSAP platform v2 — modular navigation, quality review, audit log, world model simulation

Major changes:
- New frontend (platform/web/): Vite + React 18 + TypeScript + Tailwind
- 4-module navigation: 数据送标 / 模型管理 / 车队管理 / 系统管理
- Data catalog with charts (DMS/ADAS/Lane 3-tab view)
- Quality review workflow (标注质检): Good/Fine/Bad scoring with auto-advance
- Audit enhancements: batch operations, rejection categories, Feishu notifications
- Operation audit log (操作日志)
- World model simulation studio (仿真工坊)
- Dataset version management with snapshots and diff
- ADAS 7-class dataset integration (138K images organized + compressed)
- User management with Feishu integration and pagination
- CRUD/search/filter on all pages, card layout redesign
- PIL-optimized image overlay rendering
- Auto-snapshot on build, in_review workflow stage
- Removed embedded algorithm code (now in workspace)

docs/VENDOR_RETURN.md

@@ -0,0 +1,26 @@
+# 第三方标注回传包
+
+## ZIP 结构
+
+```text
+vendor_return.zip
+├── manifest.json      # 可选：format, task, batch
+├── images/            # jpg/png
+└── labels/            # yolo txt 或 json
+```
+
+## API
+
+```bash
+curl -X POST "http://127.0.0.1:8787/api/v1/labeling/campaigns/{campaign_id}/import-vendor" \
+  -H "Authorization: Bearer <token>" \
+  -F "file=@vendor_return.zip"
+```
+
+权限：`write:labeling_vendor`（工程师、vendor_labeler 角色）。
+
+导入后自动写入 `LabelingCampaignAccess`（vendor_labeler），图片落批次 `images/`，标签落 `labels/`。
+
+## 前端
+
+标注任务列表 → **导入回传**；或侧栏 **导出与入库**。