A .json/.log/.yaml/code path outside the session workspace was refused as an
unsupported type, and clicking one in the terminal made it worse: text goes to
the log viewer, which spawns `tail -f` and allows only the workspace, /var/log
and ~/logs, so it answered "Path must be within working directory or allowed
log directories" while the same path clicked in the response viewer previewed
fine. Two surfaces, two answers, for a file the session can already cat.
- TEXT_ATTACHMENT_EXTENSIONS IS EDITABLE_EXTENSIONS (config/file-editing.ts),
not a second curated list that would drift from it. The rule reads: if the
viewer would open a file for editing inside the workspace, the same file
outside it can be read. The suffix was never the confidentiality gate here,
the path guard is (sensitive-file blocklist, /root and /etc trees, realpath
before the check), and it still runs on every registration.
- Widening what can be READ must not widen what can RUN. html/htm join svg in
serveRawFile's download-only branch, so markup is never served with a
renderable type on our own origin; other text goes out as inert
text/plain; charset=utf-8 with nosniff, matching what the path picker does.
The preview reads through fetch(), which ignores the disposition, so a
clicked .html still shows its source.
- ~/.codeman*/state.json joins isSensitivePath. It persists
SessionState.envOverrides and the env allowlist admits key-shaped names
(GEMINI_API_KEY, CLAUDE_CODE_*), so it can hold a live credential. Same
treatment as hook-secret and users.json, and the rest of the tree stays
attachable.
- The terminal sends an out-of-workspace path to the preview instead of the log
viewer. In-workspace text keeps the tail viewer, which is the point of it, and
file-stream-manager's allowlist is untouched: no `tail -f` on arbitrary host
paths.
- The by-id text preview is bounded like the workspace one: a Range request for
the first 512KB (a real partial read, not a discarded 50MB download) plus a
500-line cap, with the footer saying so.
Verified on an isolated instance: a 1.1MB external log opens in ~1.8s showing
500 lines with "showing first 500 lines" in the footer; json, yaml and code
preview; an .html carrying a script tag renders as source and does not execute;
.svg is still refused; a terminal click on an external .yaml opens the preview
with no log viewer and no attachment card; an in-workspace .log still opens the
streaming tail viewer.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Codeman maintainer
da999b130e