feat: add LLM security agent

[Nislive]

What does this PR do?

Adds an LLM security agent built around the OWASP LLM Top 10. The agent is designed to test chatbots and LLM-based applications for common security vulnerabilities.

Type of change

• Bug fix
• New feature / agent
• Security tool / MCP server / Bolt plugin
• Agent skill / knowledge base
• UI / TUI improvement
• Documentation
• Refactor / performance
• CI / infrastructure

Security impact

• This PR adds or modifies tool execution (shell, file, network)
• This PR changes agent permissions or scope
• This PR modifies authentication / authorization logic
• This PR has no security impact

How did you verify it works?

Tested locally against a Llama 3.1 8B model. The agent successfully loaded the SKILL.md file, executed the security tests step-by-step following the methodology, and identified the vulnerability.

Checklist

• bun turbo typecheck passes
• Tested locally with at least one LLM provider
• PR is focused on a single change
• No secrets, credentials, or API keys in the diff
• Breaking changes are documented (if any)

Closes #36

[github-actions]

Hey! Your PR title Add LLM security agent doesn't follow conventional commit format.

Please update it to start with one of:

• feat: or feat(scope): new feature
• fix: or fix(scope): bug fix
• docs: or docs(scope): documentation changes
• chore: or chore(scope): maintenance tasks
• refactor: or refactor(scope): code refactoring
• test: or test(scope): adding or updating tests

Where scope is the package name (e.g., app, desktop, cyberstrike).

See CONTRIBUTING.md for details.

[github-actions]

Thanks for your contribution!

This PR doesn't have a linked issue. All PRs must reference an existing issue.

Please:

1. Open an issue describing the bug/feature (if one doesn't exist)
2. Add Fixes #<number> or Closes #<number> to this PR description

See CONTRIBUTING.md for details.