v0.9.3

Highlights

• No autoscaling ceilings: sandbox.resources.memory and sandbox.resources.cpus now pin the sandbox for its whole life; msb's --max-memory/--max-cpus ceilings are deliberately not exposed, because agents run inside the sandbox and cannot call msb modify from the host, so a ceiling never rescues a failing in-sandbox build
• Sandbox environment probing: the loop probes host and container environments and leads sandbox notes with concrete transitions

What's Changed

• feat(sandbox): probe host and container environments to lead sandbox notes with concrete transitions
• refactor(sandbox): drop maxMemory/maxCpus boot ceilings