MPT-22214 exclude .claude so local make check passes with worktrees

[jentyk]

Jira: MPT-22214

What

Add .claude to the [tool.flake8] extend-exclude list in pyproject.toml (one line, alongside the existing .venv entry).

Why

make check (which runs flake8 . in Docker) fails locally whenever git worktrees exist under .claude/worktrees/ — the directory the Claude Code worktree workflow uses. flake8 scans those nested full-repo checkouts and reports WPS violations (e.g. WPS432 magic numbers, WPS235 too many imports) on paths like .claude/worktrees/<name>/tests/.... Those paths don't match any per-file-ignores pattern, so the lint fails.

Root cause: .claude is gitignored, so ruff (exclude_gitignore = true) and mypy skip it, but flake8 has no gitignore awareness and .claude was not in extend-exclude. CI is unaffected because it runs on a clean checkout without nested worktrees — this only impacts local development for anyone using the worktree workflow.

Verification

flake8 runs inside Docker via make check. With a dummy WPS-violating file placed under .claude/worktrees/_dummy_verify/tests/:

• Before (.claude not excluded): flake8 flags the dummy file and exits 1 — bug reproduced.
• After (this change): flake8 no longer flags it.
• Full make check passes end to end: ruff format --check, ruff check, flake8, mypy, and uv lock --check all green with a nested worktree present.

Change is minimal and scoped to the flake8 config.

🤖 Generated with Claude Code

Closes MPT-22214

Release Notes

• Added .claude to Flake8’s [tool.flake8].extend-exclude in pyproject.toml so flake8 ignores nested Claude Code worktree checkouts under .claude/worktrees/
• Fixes local make check failures caused by flake8 linting code within those worktree directories (CI remains unaffected on clean checkouts)

[coderabbitai]

📝 Walkthrough

Walkthrough

Adds .claude to the extend-exclude list in the [tool.flake8] configuration section of pyproject.toml, preventing Flake8 from linting that directory.

Changes

Flake8 Configuration Update

Layer / File(s)	Summary
Add .claude to Flake8 extend-exclude pyproject.toml	.claude is appended to the extend-exclude list under [tool.flake8].

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~1 minute

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🔕 Pre-merge checks override applied

The pre-merge checks have been overridden successfully. You can now proceed with the merge.

Overridden by @jentyk via checkbox on 2026-06-15T09:23:50.980Z.

❌ Failed checks (1 error)

Check name	Status	Explanation	Resolution
Pr And Commit Formatting	❌ Error [IGNORED]	PR title does not follow required format. Title has structure <type>(<scope>): <description> (JIRA-ID) but should be <JIRA-ID> <short summary> with JIRA ID at the start, not end.	Change PR title from chore(flake8): exclude .claude so local make check passes with worktrees (MPT-22214) to MPT-22214 exclude .claude so local make check passes with worktrees.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Documentation Up To Date	✅ Passed	Configuration-only change with no documented behavior impact; the .claude directory and worktree workflow are not mentioned in any documentation, so no docs update is required.

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[jentyk]

@coderabbitai approve

[coderabbitai]

✅ Action performed

Comments resolved and changes approved.