Set up Cursor Cloud development environment

[Wenjix]

Summary

Sets up the development environment for the Quorum CLI and documents non-obvious run notes for future Cloud agents.

• Configures the startup update script to npm install.
• Adds AGENTS.md with a ## Cursor Cloud specific instructions section covering build/test/run commands, the plan-pr vs --plan-only gotcha, and offline run flags.

No application code was changed.

Verification

• ✅ npm install
• ✅ npm run typecheck
• ✅ npm run build
• ✅ npm test (18/18 pass)
• ✅ node dist/src/cli.js plan-pr ... --scored clusters.scored.json --plan-only produced dag.json, state.json, exploration.md, exploration.json, and the Canvas artifact.

quorum_setup_checks.log

_{To show artifacts inline, enable in settings.}

  

[Wenjix]

Superseded by #7, which salvages the generally-useful run notes from this PR into the existing AGENTS.md (created in #6).

Two things were intentionally dropped:

• The package-lock.json change — main standardized on the npmjs registry in docs: document npm overrides + standardize npm registry #6, whereas this PR kept registry.npmmirror.com (which also breaks npm audit).
• The plan-pr / --plan-only gotcha — now stale: on main, plan-pr is plan-only by design (cli.ts dispatches planOnly: true). docs(AGENTS): build/test/run notes (salvaged from #3) #7 documents the correct behavior.

Thanks for the original setup notes — the build/test/run guidance lives on in #7.