Add enterprise incident response governance

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Summary

• Adds a self-contained enterprise incident response governance module for issue Enterprise Tooling #19.
• Triage integration, privacy, export, access, and compliance incidents for institutional admins.
• Adds severity scoring, breach-notification clocks, owner queues, export holds, signed webhook-ready events, admin dashboard metrics, and stable audit digests.
• Includes a short MP4 demo artifact at enterprise-incident-response-governance/demo.mp4.

Validation

• node enterprise-incident-response-governance/test.js
• node enterprise-incident-response-governance/demo.js
• ffprobe -v error -show_entries format=duration,size -show_entries stream=width,height,codec_name -of default=noprint_wrappers=1 enterprise-incident-response-governance/demo.mp4

/claim #19
@algora-pbc /claim #19

Built with AI assistance; reviewed and tested before submission.

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@algora-pbc /claim #19

Claiming issue #19 for PR #216. The PR body also includes /claim #19, plus validation commands and the demo artifact path.