fix: configure CORS via env ALLOWED_ORIGINS#581
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Summary
No CORS was configured in
main.ts, allowing any origin to connect. This fix adds an env-driven CORS allowlist (ALLOWED_ORIGINS) so only explicitly listed origins are permitted in production.Changes
app/backend/src/main.ts: enable CORS with origin allowlist fromprocess.env.ALLOWED_ORIGINS(comma-separated). Credentials are only passed when the origin is in the allowlist. Methods limited toGET/POST/PUT/PATCH/DELETE/OPTIONS.app/backend/.env.example: documentALLOWED_ORIGINSwith a sensible local default.Testing
ALLOWED_ORIGINS=http://localhost:3000→Origin: http://localhost:3000preflight returnsAccess-Control-Allow-Origin.Access-Control-Allow-Originheader returned.Closes #519