docs: update vm commands and browser usage in docs

AGENTS.md

@@ -5,7 +5,7 @@ This file provides guidelines for AI coding agents operating within this reposit
 ## Build, Lint, and Test Commands
 
 - **Build**: `make build-usb` (Builds the NixOS workshop ISO)
-- **Local VM**: `make local-vm-run` (Starts local development environment with 15 containers)
+- **Local VM**: `make vm` (Starts local VM that simulates USB environment)
 - **Lint**: `make lint` (Runs markdownlint, JSON validation, and nixpkgs-fmt)
 - **Test**: `make status-cloud` (Health checks for cloud infrastructure)
 - **Deploy**: `make deploy-cloud` (Deploys 15 VMs to Hetzner Cloud)