Codex code review found two issues:
P1: eval $(gstack-slug) in gstack-repo-mode executes branch names as
shell. Branch names like foo$(touch${IFS}pwned) are valid git refs and
would execute arbitrary commands. Fix: compute SLUG directly with sed
instead of eval'ing gstack-slug output.
P2: git shortlog HEAD only sees current branch history. On feature
branches that haven't merged main recently, other contributors disappear
from the sample. Fix: use git shortlog on the default branch
(origin/main) instead of HEAD.
Also improved blame lookup in collaborative triage to check both the
test file and the production code it covers.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Codex adversarial review found that unvalidated config/cache values
could be injected into shell via source <(gstack-repo-mode). Added
validate_mode() that only allows solo|collaborative|unknown — anything
else becomes "unknown". Prevents persistent code execution through
malicious config.yaml or tampered cache JSON.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Detects whether a repo is solo-dev (one person does 80%+ of recent commits)
or collaborative. Uses 90-day git shortlog window with 7-day cache in
~/.gstack/projects/{SLUG}/repo-mode.json. Config override via
`gstack-config set repo_mode solo|collaborative` takes precedence over
the heuristic. Minimum 5 commits required to classify (otherwise unknown).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Garry Tan