[devex] Add AGENTS.md with Cursor Cloud setup instructions

[goodindustries]

Adds AGENTS.md with Cursor Cloud specific instructions for future agents, covering:

• How to start the static frontend server, FastAPI API, and pipeline
• Key caveats (no root package.json, no linter config, ~/.local/bin PATH, large library/ data dir)
• Docker Compose and Netlify deploy context

Evidence of working environment

Frontend — static server on :8080, scripture reader with navigation and search working:

wescripture_frontend_demo.mp4

WeScripture homepage
Genesis chapter loaded
Search results for faith

FastAPI API — all endpoints responding on :8000:

• /healthz → {"ok": true}
• /api/version → {"name": "wescripture-api", "version": "0.1.0"}
• /api/session/ensure → creates signed session cookie
• /api/whoami → session check

Pipeline — core modules (orchestrate, task_dispatch, task_worker, build_dashboard_state) import and compile cleanly.

Update script: pip install -r requirements-pipeline.txt -r server/requirements.txt

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