feat: update backend services and routes

- Add business routes and middleware\n- Update search and database services\n- Improve health check implementation\n- Update CI workflow configuration

src/middleware/auth.ts

@@ -0,0 +1,47 @@
+import { Request, Response, NextFunction } from 'express';
+import { supabase } from '../lib/supabase';
+
+// Extend Express Request type to include user
+declare global {
+  namespace Express {
+    interface Request {
+      user?: {
+        id: string;
+        email: string;
+        role: string;
+      };
+    }
+  }
+}
+
+export async function authenticateUser(
+  req: Request,
+  res: Response,
+  next: NextFunction
+) {
+  try {
+    const authHeader = req.headers.authorization;
+    if (!authHeader) {
+      return res.status(401).json({ error: 'No authorization header' });
+    }
+
+    const token = authHeader.replace('Bearer ', '');
+    const { data: { user }, error } = await supabase.auth.getUser(token);
+
+    if (error || !user) {
+      return res.status(401).json({ error: 'Invalid token' });
+    }
+
+    // Add user info to request
+    req.user = {
+      id: user.id,
+      email: user.email!,
+      role: (user.app_metadata?.role as string) || 'user'
+    };
+
+    next();
+  } catch (error) {
+    console.error('Authentication error:', error);
+    res.status(401).json({ error: 'Authentication failed' });
+  }
+}