Add Conductor workspace scripts

[dillchen]

Summary\n- add a Conductor setup script for deps, env, Docker services, and migrations\n- set run script to start all services in nonconcurrent mode\n\n## Testing\n- not run (not requested)

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Note

Adds Conductor workspace automation.

• New conductor.json with scripts.setup to install dependencies, link/copy .env, detect and start docker compose/docker-compose, wait for cw_postgres readiness, then run pnpm migrate-db
• Adds scripts.run as pnpm start-all
• Sets runScriptMode to nonconcurrent

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