Agent tool downloads and trigger attachment staging both used the SDK
messageResource path, which fails closed for multi-MB teacher files and
did not share the bot-identity transport contract. Route every download
through Hub-owned createFeishuBotCli (secret via stdin, disposable HOME,
HUB_FEISHU_CLI_BIN), keep workspace containment on write, and inject the
adapter in trigger tests.
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.
Defaults and silo env go to 150 turns / 1800s wall clock. Run completion
appends a clear Feishu notice for max-turns, timeout, and other failures
(partial answer kept). Startup process-restart kills notify the bound chat.
Release v0.0.38.
hongjr03