docs(plans): verify PyPI regression fix post-PR #268

[th3w1zard1]

Description

Documents post-merge verification for the Verify PyPI Regression workflow fix merged in PR #268 (01edca184).

This PR closes plan 019 (fix: master Verify PyPI Regression) and adds plan 020 (verify: PyPI regression fix post-PR #268) with evidence tables. No product code or workflow YAML changes — documentation and closeout only.

Type of Change

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 📚 Documentation update
• 🔧 Refactoring (no functional changes)
• ⚡ Performance improvement
• ✅ Test addition or update
• 🔨 Build system or CI changes
• 🎨 Code style changes (formatting, renaming, etc.)

Package(s) Affected

• PyKotor (core library)
• One or more tools under Tools/
• Documentation
• CI/CD
• Other: ___________

Changes Made

• docs/plans/2026-05-24-019-fix-master-pypi-regression-plan.md: Mark status: completed; add post-merge verification table (PR fix(ci): pypi regression cli tool discovery on master #268 merge, local discovery smoke, CI run link).

• docs/plans/2026-05-24-020-verify-pypi-regression-post-268-plan.md: New verify slice plan (status: completed) recording R1–R3 closeout for the post-fix(ci): pypi regression cli tool discovery on master #268 state.

• docs/plans/2026-05-24-023-fix-pr270-merge-conflicts-plan.md: Documents merge-conflict resolution after syncing with master.

Testing

• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have tested this manually
• I have tested on multiple Python versions (3.8+)
• I have tested on multiple operating systems (if applicable)

Test Results

Local CLI discovery smoke test (validates the workflow fix path without re-running full CI):

python3 .github/scripts/discover_tools.py --cli-only --format json
# → holopatcher, kotordiff, kotormcp (3 CLI tools, exit 0)

Checklist

• My code follows the project's style guidelines
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published (PR fix(ci): pypi regression cli tool discovery on master #268 merged)

Related Issues

Related to #268

Screenshots (if applicable)

N/A — plan markdown only.

Additional Notes

• Master Verify PyPI Regression run 26362044155 was cancelled (concurrent workflow_run triggers with cancel-in-progress: true). Concurrency fix landed in PR fix(ci): stop verify-pypi cancel storm on master #275 (merged to master).

• Synced with current master (05ceaab04, includes fix(ci): merge duplicate if on verify-pypi report job #276). Plan 025 records this sync; plan 020 tracks fix(ci): grant workflows write to forward-commits job #273 (forward-commits) pending merge.

• Canonical closeout PR for this slice is docs(plans): verify PyPI regression fix post-PR #268 #270 (not duplicate closeout branch PR docs(plans): close pypi regression verification post-pr268 #271).

• Deleted stale merged branch fix/pypi-verify-regression-concurrency (plan 026). Merge fix(ci): grant workflows write to forward-commits job #273 then docs(plans): verify PyPI regression fix post-PR #268 #270.