fix(causal): Use operator rho clamp and strict sanity check

[DaviBonetto]

Replace the causal-clamp proxy with an operator-level rho check in the dt hook, remove the hard per-channel floor that was over-constraining the intervention, and keep rho_current/rho_after explicit in the diagnostics.

This keeps the implementation aligned with the paper's clamp semantics and makes the Colab reproduction easier to verify with a strict sanity check.

Also adds focused smoke tests for dt_bias application, rho computation, and clamp monotonicity.

[coderabbitai]

Warning

Rate limit exceeded

@DaviBonetto has exceeded the limit for the number of commits that can be reviewed per hour. Please wait 6 minutes and 28 seconds before requesting another review.

⌛ How to resolve this issue?

After the wait time has elapsed, a review can be triggered using the @coderabbitai review command as a PR comment. Alternatively, push new commits to this PR.

We recommend that you space out your commits to avoid hitting the rate limit.

🚦 How do rate limits work?

CodeRabbit enforces hourly rate limits for each developer per organization.

Our paid plans have higher rate limits than the trial, open-source and free plans. In all cases, we re-allow further reviews after a brief timeout.

Please see our FAQ for further information.

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 51071cb4-e8f9-4f37-a8ab-57171646abb3

📥 Commits

Reviewing files that changed from the base of the PR and between 650b878 and 1facc7e.

📒 Files selected for processing (2)

• scripts/run_causal_intervention.py
• tests/test_run_causal_intervention.py

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch codex/fix/colab-causal-repro-notebook

📝 Coding Plan

• Generate coding plan for human review comments

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}