Fix healthcheck: use wget -qO instead of --spider (BusyBox compat)

web/docker-compose.yml

@@ -5,7 +5,7 @@ services:
       - inventory-network
     restart: unless-stopped
     healthcheck:
-      test: ["CMD", "wget", "--spider", "-q", "http://localhost:3001/api/health"]
+      test: ["CMD", "wget", "-qO", "/dev/null", "http://localhost:3001/api/health"]
       interval: 30s
       timeout: 3s
       start_period: 5s

web/server/Dockerfile

@@ -12,6 +12,6 @@ COPY . .
 EXPOSE 3001
 
 HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
-  CMD wget --spider -q http://localhost:3001/api/health
+  CMD wget -qO /dev/null http://localhost:3001/api/health
 
 CMD ["node", "server.js"]