fix ingress buffer size

[raphael-frank]

I fixed an issue regarding the ingress buffer

Summary by CodeRabbit

• Bug Fixes
  • Improved authentication flow reliability by increasing proxy header capacity when forward authentication is enabled.
  • Prevented login and session refresh failures caused by oversized authentication headers.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: b167642a-f313-46a2-9cf2-7de67b526033

📥 Commits

Reviewing files that changed from the base of the PR and between ccfe450 and 45cc4c2.

📒 Files selected for processing (1)

• infra/helm/team-devoops/templates/ingress.yaml

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📝 Walkthrough

Walkthrough

The Helm ingress template adds a conditional 16k nginx proxy buffer annotation to both team-devoops-plain and team-devoops-open when forwardAuth is enabled, with comments describing oauth2-proxy header-size failures.

Changes

Ingress proxy buffer configuration

Layer / File(s)	Summary
Forward-auth ingress annotations infra/helm/team-devoops/templates/ingress.yaml	Both ingress variants add nginx.ingress.kubernetes.io/proxy-buffer-size: "16k" alongside the oauth2-proxy annotations when forwardAuth is enabled, with explanatory comments.

Estimated code review effort: 2 (Simple) | ~5 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main change: increasing the ingress proxy buffer size to fix nginx header issues.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch infra/120-remove-hardcode-secrets

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