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)

platform/web/node_modules/postcss/lib/declaration.js

@@ -0,0 +1,24 @@
+'use strict'
+
+let Node = require('./node')
+
+class Declaration extends Node {
+  get variable() {
+    return this.prop.startsWith('--') || this.prop[0] === '$'
+  }
+
+  constructor(defaults) {
+    if (
+      defaults &&
+      typeof defaults.value !== 'undefined' &&
+      typeof defaults.value !== 'string'
+    ) {
+      defaults = { ...defaults, value: String(defaults.value) }
+    }
+    super(defaults)
+    this.type = 'decl'
+  }
+}
+
+module.exports = Declaration
+Declaration.default = Declaration