Teachers convert many PDFs in one tool call with bounded Docmind concurrency.
Each item keeps its own output_dir/document.md and UsageFact; failures are
per-file. Mirror role skills to .cph/runtime-skills and CPH_RUNTIME_SKILLS_DIR
so agents can Read SKILL.md instead of dead .claude/sandbox stubs.
Host egress requires the local forward proxy; sandbox env previously
omitted PROXY vars so Bash/curl timed out on public image URLs. Pass
HTTP(S)/ALL/NO_PROXY (+ lowercase) and NODE_USE_ENV_PROXY from the
trusted service environment into the agent subprocess.
hongjr03