OTA-2109: harden console plugin nginx TLS configuration

[jrangelramos]

Summary

• Add explicit ssl_protocols, ssl_ciphers, ssl_prefer_server_ciphers, and server_tokens off to the console plugin nginx server block
• The config previously relied on UBI 9 compile-time defaults which are safe, but making them explicit improves auditability and guards against future default changes
• Security headers (X-Frame-Options, CSP, etc.) intentionally omitted — this nginx serves JS/CSS bundles fetched by the console proxy, not HTML documents

JIRA

https://redhat.atlassian.net/browse/OTA-2109

Test plan

• Verify make build succeeds
• Verify make verify passes
• Deploy on a test cluster with agentic updates enabled and confirm the console plugin pod starts and serves assets over TLS

🤖 Generated with Claude Code

[openshift-merge-bot]

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[openshift-ci-robot]

@jrangelramos: This pull request references OTA-2109 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the weakness to target the "5.1.0" version, but no target version was set.

Details

In response to this:

Summary

• Add explicit ssl_protocols, ssl_ciphers, ssl_prefer_server_ciphers, and server_tokens off to the console plugin nginx server block
• The config previously relied on UBI 9 compile-time defaults which are safe, but making them explicit improves auditability and guards against future default changes
• Security headers (X-Frame-Options, CSP, etc.) intentionally omitted — this nginx serves JS/CSS bundles fetched by the console proxy, not HTML documents

JIRA

https://redhat.atlassian.net/browse/OTA-2109

Test plan

• Verify make build succeeds
• Verify make verify passes
• Deploy on a test cluster with agentic updates enabled and confirm the console plugin pod starts and serves assets over TLS

🤖 Generated with Claude Code

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• pkg/agenticrun/bindata/assets/configmap.yaml

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: jrangelramos
Once this PR has been reviewed and has the lgtm label, please assign davidhurta for approval. For more information see the Code Review Process.

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[openshift-ci]

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