RIVET_ENDPOINT and RIVET_PUBLIC_ENDPOINT are now optional in the agent
env schema; empty strings are coerced to undefined. The agent runtime
only passes an endpoint override to the Rivet client when one is set,
so the client falls back to its default (suitable for self-hosted
Rivet where no explicit endpoint is required).
- Move all application env vars to repository-root .env (with .env.example
as the committed template) and drop the per-app .env.example files.
- Add @code/env subpaths (agent, convex) and consume validated exports
everywhere instead of reading process.env directly.
- Wire every dev/build/start script to load ../../.env via bun --env-file
and point vite.config.ts envDir at the repo root.
