After committing task changes, the executor now checks for untracked
files (git status --short | grep '^??') and handles them: commit if
intentional, add to .gitignore if generated/runtime output.
This prevents generated artifacts (build outputs, .env files, cache
files) from being silently left untracked in the working tree.
Changes:
- execute-plan.md: Add step 6 to task commit protocol
- gsd-executor.md: Add step 6 to task commit protocol
Fixes#957
c7b933dcc6