Follow-up to the review fixes, from a second review pass:
- flock now uses -w 30 (bounded wait) so a hung render can't block the panel's
docker-exec (and the site-save request) indefinitely; the dead-code timeout
error path is now reachable.
- sweep stale .httpd_config.conf.tmp.* left by a prior SIGKILL (trap EXIT doesn't
run on SIGKILL); safe under flock since each render uses a unique $$ suffix.
Verified: render still produces a valid config + serves; stale tmp is swept.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
jknapp
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