feat: detect risky operational verdicts without evidence

[Rudra-G-23]

What & why

Description: Adds the risky_verdict check for unsupported operational recommendations involving
destructive or high-impact actions. Includes focused regression coverage for evidence signals and
false-positive cases.

Closes #39

Changes

• agentrace/checks.py
• tests/test_risky_verdict.py

Checklist

• Focused change with a clear description
• Ran format / lint / tests (see README)
• Linked any related issue (e.g. Closes #123)

[github-actions]

Welcome, @Rudra-G-23, and thanks for your first pull request to Agentrace.

A quick look at CONTRIBUTING.md covers how things are set up and run here.

I'll review this shortly. Ask anything in the thread if something is unclear.

[github-actions]

Merged. Thanks a lot, @Rudra-G-23.

Good, focused change. Exactly the kind of thing Agentrace needs.

If Agentrace is useful to you, a star goes a long way.

Happy to see more from you whenever you have the time.