Add Cursor Cloud dev environment setup instructions

[mnjit20]

Summary

Sets up the development environment for this multi-project repo and documents durable, non-obvious setup guidance for future Cloud Agents in a new AGENTS.md.

This repo is a collection of independent Node.js/TypeScript sub-projects (no root workspace). The two real products are teaching-material-search (Express) and db-search (Fastify), both backed by PostgreSQL 16.

What was set up in the environment

• PostgreSQL 16 installed natively (Docker is unavailable in this env), started, and databases teaching_materials + db-search created.
• npm install run for all sub-projects (also captured as the startup update script).
• .env files created for both products (gitignored, documented in AGENTS.md for recreation).

Verification

Both products were built, tested, and run end-to-end:

Product	build	test	run + search
teaching-material-search	npm run build ✅	vitest run (5/5) ✅	npm run dev → /api/search returns ranked results ✅
db-search	npm run build / typecheck ✅	tsx --test (9/9) ✅	npm run dev → /api/search + POST /api/documents ingest ✅

Browser demo of the teaching-material-search search UI:

teaching_material_search_demo.mp4

Search results for

Changes

• Added AGENTS.md with ## Cursor Cloud specific instructions (native Postgres startup, DB creation, gitignored .env contents, port 3000 conflict, per-product migrate/seed vs auto-seed notes).

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