progress.py stores the names of implemented and pending items, can
measure another source tree with --root and prints a Markdown diff of
two runs with --compare. The Progress report workflow compares every
pull request with its base, and Progress comment posts the result as a
single comment, updated on every push and removed when progress no
longer changes. Commenting runs as a separate workflow_run so pull
requests from forks never run with write permissions.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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