docs: Cursor Cloud development environment guide

[nttylock]

Summary

Adds docs/cursor-cloud-development.md with commands and workflows for Cloud Agent VMs working on AdClaw.

The repo-root AGENTS.md is gitignored (local agent notes); this committed doc mirrors the Cursor Cloud section for the team.

VM update script (proposed)

python3 -m pip install -e ".[dev]"
cd console && npm ci

Verified locally in Cloud Agent

• python3 -m pip install -e ".[dev]" and cd console && npm ci
• python3 -m pytest -m "not slow": 730 passed (9 failures are live-server / consolidation tests)
• cd console && npm run format:check: pass
• python3 -m adclaw init --defaults --accept-security + python3 -m adclaw app on :8088
• Health API + skills API (121 skills) + persona creation from template + Web UI Personas page

Researcher persona in AdClaw Console

adclaw-dev-env-demo.mp4

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