Normalize OWASP cheat sheet references

[Bornunique911]

Summary

This PR is split out from the larger issue-471 review flow to make review smaller and more focused.

It normalizes OWASP cheat sheet references by:

• using official OWASP Cheat Sheet Series links
• adding supplemental cheat sheet mappings for references that are not reliably discoverable from repository parsing alone
• covering that behavior with focused parser tests

Issue reference:

• Related to Mapping: to more owasp resources #471
• Supersedes Normalize OWASP cheat sheet references #865

Problem Fixed

The earlier cheat sheet references review became too large because it was mixed with unrelated importer-stack work.

For this part of the work, the useful standalone contribution is:

• using official cheat sheet URLs
• supplementing missing cheat sheet references with explicit mapping data
• ensuring parser behavior remains test-covered

Solution

This PR updates the cheat sheet parser to:

• tolerate repository clone failure and continue with supplemental cheat sheet mappings
• load supplemental cheat sheet mapping data from JSON
• deduplicate cheat sheet entries by section and hyperlink
• keep official OWASP Cheat Sheet Series hyperlinks for normalized references

This PR also adds:

• supplemental cheat sheet mapping data
• focused parser test coverage for the supplemental references

Files in scope:

• application/utils/external_project_parsers/parsers/cheatsheets_parser.py
• application/utils/external_project_parsers/data/owasp_cheatsheets_supplement.json
• application/tests/cheatsheets_parser_test.py

Tests

./venv/bin/python -m pytest application/tests/cheatsheets_parser_test.py -q

Reviewer Notes

This PR is intentionally narrow because it was split to reduce review size:

• no frontend changes
• no unrelated OWASP importer modules
• no refresh script aggregation
• no bundle artifacts

This PR is meant to be reviewed as a standalone cheat sheet reference normalization change.

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Review details

⚙️ Run configuration

Configuration used: Path: .coderabbit.yml

Review profile: CHILL

Plan: Pro

Run ID: e9ad2807-f181-4c90-8d15-894b99cc8ce8

📥 Commits

Reviewing files that changed from the base of the PR and between 0e16c2e and aac9e3b.

📒 Files selected for processing (3)

• application/tests/cheatsheets_parser_test.py
• application/utils/external_project_parsers/data/owasp_cheatsheets_supplement.json
• application/utils/external_project_parsers/parsers/cheatsheets_parser.py

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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