[docs] Write an integration guide for third-party audit tools (Semgrep, CodeQL, Slither)

[CelestinaBeing]

Context

Security teams want to use Sanctifier alongside existing tools. We need a guide showing how to combine Sanctifier's SARIF output with Semgrep, CodeQL, or other SARIF-aware tools.

Work

• Write docs/INTEGRATION-GUIDE.md covering:
  • Merging multiple SARIF files for unified reporting
  • GitHub Code Scanning with Sanctifier + CodeQL
  • Semgrep + Sanctifier workflow
  • Exporting to Jira / Linear via webhooks
• Add a sample CI workflow for each integration

Acceptance criteria

• docs/INTEGRATION-GUIDE.md merged
• Sample GitHub Code Scanning workflow tested and working

[smog123]

@smog123 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

i will like to work this project

ℹ️ Repo Maintainers: To accept this application, review their application or assign @smog123 to this issue.

[bheesty]

@bheesty has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hello maintainer, I can fix this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @bheesty to this issue.

[midexol]

@midexol has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi maintainer I'd like to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @midexol to this issue.

[nonso7]

@nonso7 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Can i work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @nonso7 to this issue.

[Caneryy]

@Caneryy has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi, I'd like to work on this issue please.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Caneryy to this issue.

[drips-wave]

Congratulations, @nonso7! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 30, 2026.

🧑‍💻 @nonso7: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊