feat: initial public release (MAESTRO v0.1.0)

Open-source release of MAESTRO, an agent orchestration platform that runs
LLM-driven tasks through sandboxed tools, with a web UI. Apache-2.0.
See README.md and docs/ (getting-started, configuration, architecture).

tests/fixtures/scripts/throws.js

@@ -0,0 +1,2 @@
+async function main() { throw new Error('boom from user script'); }
+module.exports = main;