First OCR request for an unbuilt paddle/surya engine no longer blocks for minutes;
with auto_build it kicks off the background builder (same one the web UI uses) and
returns 503 'building — retry shortly'. Without auto_build it points at Settings.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Mw2KQiswmD69T45fTfjKwW