boat Adds AgentEnv Support for RL

This is a meaningful infrastructure play: realistic agentic RL needs complete, reproducible computers—not disposable containers—and boat is targeting that gap directly.

• –AgentEnv’s provider-agnostic design lets the same environments run across boat and other sandbox backends.
• –Full VMs with Chrome, desktops, Docker, and internet access better support computer-use, browser, and software-engineering tasks.
• –Snapshots and fast forking enable repeatable rollouts, parallel experiments, and cheaper environment resets.
• –The 16-vCPU, 32-GB configuration is compelling for demanding workloads, but boat’s “least expensive” positioning remains a vendor claim; its site lists that tier at $0.20/hour and says it is available on request.
• –The integration strengthens boat’s pitch as an agent-factory backend, though teams should validate startup latency, regional availability, and sustained fleet economics.