docs: fix remaining PwnKit Labs refs in ui/ and deploy/ READMEs

[peaktwilight]

Follow-up: two sub-READMEs still carried the pre-rebrand 'PwnKit Labs product' line.

Summary by CodeRabbit

• Documentation
  • Updated product attribution across the main, deployment, and UI documentation to reference 0sec Labs.
  • Refreshed ecosystem links and descriptions, including the renamed pwnkit entry and the addition of foxguard.
  • Updated references to the 0sec.ai technology stack.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 407b4ea4-d157-4a5d-b6b0-27736e6f89a9

📥 Commits

Reviewing files that changed from the base of the PR and between 1b59603 and 556b150.

📒 Files selected for processing (3)

• README.md
• deploy/README.md
• ui/README.md

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📝 Walkthrough

Walkthrough

Changes

0sec Labs branding documentation

Layer / File(s)	Summary
Update attribution and ecosystem links README.md, deploy/README.md, ui/README.md	Documentation now identifies OpenSOAR and its related projects under 0sec Labs, with updated descriptions and ecosystem links.

Estimated code review effort: 1 (Trivial) | ~2 minutes

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch readme-refresh-0sec-labs

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