DevMode public tunnel timing out

[rblalock]

Summary

In DevMode, the public tunnel URL is not behaving like the localhost url.

Environment

• Agentuity CLI: 1.0.38
• Bun: 1.3.10
• OS: Linux arch1 6.18.13-arch1-1 x86_64
• SDK repo: agentuity/sdk
• DevMode local URL: http://127.0.0.1:3620
• DevMode public URL: https://epb8srx0g8f.agentuity-us.live

What Fails

Local health:

curl -sS http://127.0.0.1:3620/
# {"status":"ok","sessions":0}

Public health:

curl --max-time 10 -sS https://epb8srx0g8f.agentuity-us.live
# curl: (28) Operation timed out after 10001 milliseconds with 0 bytes received

[linear]

AGENT-1429

[parteeksingh24]

This also affects sandbox public URLs (*.agentuity.run), not just DevMode tunnels.

Tested with a sandbox running opencode:latest on port 4096. Server is healthy internally:

# Inside sandbox — 200 OK
curl -u opencode:$PASS http://127.0.0.1:4096/global/health
{"healthy":true,"version":"1.2.20"}

# Outside sandbox — times out
curl https://s2a699d9df148dec5.agentuity.run/global/health
# HTTP 000, 15s timeout