fix(ci): python-precommit workflow never ran due to case-sensitive examples/Python path

[mueedx]

Depends on #166 (fix/python-ci-lint-debt).

examples/python has never been CI'd because python-precommit.yml filters on examples/Python/** (capital P) — GitHub Actions path filters are case-sensitive. The directory on disk is examples/python. The lint step also targeted application_examples examples, neither of which exists.

Changes:

• paths filter: examples/Python/** → examples/python/**
• 5× working-directory: ./examples/Python → ./examples/python
• pylint target: application_examples examples → .

.venv probe finding (Step 5): CI creates .venv in-repo via virtualenvs-in-project: true before pylint runs. With .pylintrc ignore-paths= empty, pylint traverses .venv site-packages and fails (exit 6, 2,199 errors from pip/_vendor, score drops 10.00→9.07). This is a CI-correctness concern, not pre-existing debt, so it belongs here.

Fix: .pylintrc ignore-paths= → ^[.]venv,^[.]git. Note: the plan's suggested ^\.venv pattern is mangled by pylint 3.3.9's regexp_paths_csv transformer (it pipes patterns through PureWindowsPath, which treats \ as a path separator, turning ^\.venv into ^\\.venv — a literal backslash that never matches). Using ^[.] (character-class equivalent of \.) survives the transformation. Verified: pylint exits 0 with a throwaway .venv present (score 10.00/10).

Result: Enabling the workflow surfaces nothing new precisely because PR #166 already cleared the debt.

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• .github/workflows/python-precommit.yml

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📝 Walkthrough

Walkthrough

The pre-commit workflow now uses examples/python for its path filter and Python checks. Pylint scans the working directory, and its configuration excludes .venv and .git. Python examples include import and formatting changes, explicit UTF-8 encoding for two output files, and f-string logging updates.

Priority: ⬇️ Low

Merge Risk: ⚪ Minimal · up to 5561a

The pre-commit workflow now targets the correct lowercase path, and the earlier workflow-validity concern no longer applies. The example edits keep their behavior, and no merge-blocking risks are known.

Security Architecture Review

Security architecture risk: 🔵 Low · up to d619a

The change restores intended Python checks without adding a new credential mechanism. No vulnerability is confirmed, but effective workflow token permissions are unknown, leaving uncertainty about the authority available during newly enabled runs.

Retained concerns
No architecture-level concerns identified.

Security review details

Security Blast Radius

• inferred — The established execution surface is the Python CI runner and repository checkout. Any downstream repository mutation would depend on executable attacker-controlled content and effective token authority; write access and broader exposure have not been established.

Security Findings and Attack Paths

• inferred — The token-permission candidate remains unresolved rather than verified. Newly reachable dependency installation is supported, but repository or organization defaults and resulting pull-request token permissions are unavailable, preventing confirmation of a privileged attack path.

Trust Boundaries and Controls

• observed — The workflow retains its existing pull-request execution model and introduces no explicit token, secret reference, push command, or deployment step. Its authority remains externally policy-dependent rather than explicitly bounded in this workflow.

Hardening Proposals

• proposed — Declare the minimum token permissions required by the validation actions and disable persisted checkout credentials if they are unnecessary. This would make the authority boundary explicit; it is a hardening proposal, not evidence of an existing exploit.

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the main change: correcting the case-sensitive Python path in the CI workflow so it runs.
Description check	✅ Passed	The description is directly related to the changeset and explains the path corrections, pylint target, and ignored virtual-environment paths.
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.

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Inline comments:
Review comments at @.github/workflows/python-precommit.yml:
- Line 50: Remove the invalid step-level working-directory and continue-on-error
keys from the isort and pyright action steps. Set isort’s sort-paths input to
examples/python, and add working-directory: examples/python to pyright’s
existing with block.

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Configuration used: Organization UI

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📥 Commits

Reviewing files that changed from the base of the PR and between e46b9d9 and 90ea69c.

📒 Files selected for processing (9)

• .github/workflows/python-precommit.yml
• examples/python/.pylintrc
• examples/python/collect_paginated_ecommerce_listing_data/main.py
• examples/python/collect_paginated_news_headlines/main.py
• examples/python/compare_product_prices/async_main.py
• examples/python/humanlike-antibot/main.py
• examples/python/maps_scraper/main.py
• examples/python/news-aggregator/main.py
• examples/python/news-aggregator/main_sync.py

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