Without these, LiteLLM's /ui falls back to username 'admin' and the
master key as the password, forcing the master key to be typed into
a browser. generate-secrets.sh now fills UI_PASSWORD like the other
secrets.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Q2CR8yawSf7pwAVYnjwFea