Add Cloud Agent development environment

[goodeats]

Summary

Sets up a Cloud Agent development environment for patn-dev-stack (Epic Stack / React Router v7 app). New agents will boot with dependencies installed, the SQLite database migrated and seeded, and the dev server running.

Changes

• .cursor/environment.json — declares the install step and a dev terminal running npm run dev (fully mocked, MOCKS=true).
• .cursor/install.sh — idempotent bootstrap: creates .env from .env.example if missing, runs npm ci, resets/seeds the Prisma SQLite DB (prisma migrate reset --force), and generates the Prisma client with typed SQL (prisma generate --sql).

Validation

All run on the current VM:

• npm run typecheck — passed
• npm run lint — passed (0 errors; 1 pre-existing warning)
• npx vitest run — 24/24 tests passed
• npm run build — client + server build succeeded
• Dev server end-to-end: homepage, /resources/healthcheck (200), DB-backed /users?search=pat returning seeded Kody/pat, and /login all verified in-browser
• Install idempotence: install.sh ran cleanly twice

patn_dev_stack_end_to_end_walkthrough.mp4

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