Environment

• v0.15.1, dashboard webui (port 9119), running inside Docker

Symptom

Clicking "Update" in WebUI inside a Docker container shows raw output:

✗ `hermes update` doesn't apply inside the Docker container.
Hermes Agent runs as a published image ... [4 paragraphs of guidance]

The message text is excellent and points to the correct fix (docker pull && docker compose up -d --force-recreate). The issue is UX:

• Button is enabled inside Docker context where it cannot succeed
• Click triggers the CLI guard which exits non-zero → WebUI renders it as a generic error

Suggested fix

Detect Docker in /api/hermes/update endpoint (e.g. via /.dockerenv or the existing context detection used by the CLI guard) and either:

• Hide the button in Docker mode, OR
• Render a Docker-specific modal with copy-paste-ready commands instead of surfacing the SystemExit as an error.