Initial commit: Video detection platform with YOLO models

Features:
- Fire detection (YOLOv10)
- Helmet detection (YOLOv8)
- Crowd detection (YOLOv8)
- Smoking detection (YOLOv8)
- Loitering detection (YOLOv8)

Tech Stack:
- Frontend: Vue 3 + Vite + Element Plus
- Backend: FastAPI + WebSocket
- Monorepo: pnpm workspace + Turbo
- Docker support included

packages/shared-types/src/index.ts

@@ -0,0 +1,58 @@
+// 检测相关类型
+
+export interface Detection {
+  class: string;
+  label: string;
+  confidence: number;
+  bbox: [number, number, number, number];
+}
+
+export interface DetectionStats {
+  total_detections: number;
+  avg_confidence: number;
+  processing_time: number;
+  model_used: string;
+  fps?: number;
+}
+
+export interface ModelInfo {
+  id: string;
+  name: string;
+  description: string;
+  classes: string[];
+  labels: Record<string, string>;
+  size: string;
+  type: string;
+}
+
+export interface DetectionResult {
+  success: boolean;
+  message: string;
+  data: {
+    detections: Detection[];
+    image_url?: string;
+    stats: DetectionStats;
+  };
+}
+
+export interface DetectionConfig {
+  model_id: string;
+  confidence: number;
+  iou: number;
+}
+
+// WebSocket 消息类型
+export interface WebSocketMessage {
+  type: 'original_frame' | 'annotated_frame' | 'detection' | 'error' | 'camera_started' | 'camera_stopped' | 'config_updated';
+  frame?: string;
+  detections?: Detection[];
+  stats?: DetectionStats;
+  message?: string;
+}
+
+export interface CameraConfig {
+  model_id: string;
+  confidence: number;
+  iou: number;
+  camera_source?: number | string;
+}