Modify deployment/check_frontend.sh to use `env $(cat .env | grep -v '^#' | xargs) npm run dev` to inject environment variables into the npm process, resolving issues where `nohup` did not inherit exported variables. Update replit.md to reflect the corrected fix details.
Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 7a657272-55ba-4a79-9a2e-f1ed9bc7a528
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Event-Id: 602cd9af-422f-4b1d-ab37-5fd3e0bd016f
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/449cf7c4-c97a-45ae-8234-e5c5b8d6a84f/7a657272-55ba-4a79-9a2e-f1ed9bc7a528/dI1I79r
