CIPC/BizPortal search drives a real Chrome session through agent-browser
to log into BizPortal and scrape the result pane. That toolchain exists
only on the Windows dev machine; the Coolify image is a Linux container
with no browser tooling (the Dockerfile header already says so).
Nothing detected that up front, so a search on the deployed URL fell
through to the legacy spawnSync fallback, which builds a Windows-style
interpreter path even on Linux (.venv/Scripts/ plus python). The shell
answered 'not found' with exit 127, extractError() found no marker line
in stdout and returned 'Unknown error', and the UI rendered that over
the raw shell message - a dead end with no action in it.
Now the route checks for the interpreter it needs before doing any
work, and returns 503 with a sentence naming the real cause and where
to run the search instead. Checked per request so it cannot go stale.
Verified: typecheck clean; a real enterprise search of K2022808158 on
the local dev server still returns 200 in 87s with 3 directors, so the
guard does not touch the working Windows path.
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