chore: add agentshield, trim CLAUDE.md and skills

[John-David Dalton (jdalton)]

Summary

• Add ecc-agentshield@1.4.0 devDep and security script
• Fix security-scan skill description to third-person
• Trim quality-scan SKILL.md from 602 to 63 lines

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	npm/​ecc-agentshield@​1.4.0

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[socket-security-staging]

Warning

Review the following alerts detected in dependencies.

According to your organization's Security Policy, it is recommended to resolve "Warn" alerts. Learn more about Socket for GitHub.

Action	Severity	Alert  (click "▶" to expand/collapse)
Warn		Deprecated by its maintainer: npm glob Reason: Old versions of glob are not supported, and contain widely publicized security vulnerabilities, which have been fixed in the current version. Please update. Support for old versions may be purchased (at exorbitant rates) by contacting i@izs.me From: pnpm-lock.yaml → npm/glob@11.1.0 ℹ Read more on: This package | This alert | What is a deprecated package? Next steps: Take a moment to review the security alert above. Review the linked package source code to understand the potential risk. Ensure the package is not malicious before proceeding. If you're unsure how to proceed, reach out to your security team or ask the Socket team for help at support@socket.dev. Suggestion: Research the state of the package and determine if there are non-deprecated versions that can be used, or if it should be replaced with a new, supported solution. Mark the package as acceptable risk. To ignore this alert only in this pull request, reply with the comment @SocketSecurity-Staging ignore npm/glob@11.1.0. You can also ignore all packages with @SocketSecurity-Staging ignore-all. To ignore an alert for all future pull requests, use Socket's Dashboard to change the triage state of this alert.

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