HTTP_PORT=3000 BOT_NAME=Herald WEBHOOK_SIG_HEADER_SECRET= OPEN_ROUTER_API_KEY= OPEN_ROUTER_MODEL=deepseek/deepseek-v4-flash OPEN_ROUTER_TIMEOUT=120 BOT_MAX_CONCURRENT=5 GITEA_URL=https://gitea.example.com GITEA_TOKEN= GITEA_TIMEOUT=30 # Optional SENTRY_DSN= RUST_LOG=info