Snapshot-review tooling to make detector changes easy to audit

[Gbangbolaoluwagbemiga]

Epic: Testing Infrastructure

Summary

Tooling to review/approve insta snapshot diffs so detector changes are transparent.

Background & Problem

Every detector has a golden snapshot; smooth review keeps quality high as rules evolve.

Acceptance Criteria

• Reviewers can diff/approve snapshots easily.
• Documented workflow.

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Filed as part of the mainnet-readiness & world-class roadmap. Scope is intentionally small enough for one focused PR; comment to claim.

[OluRemiFour]

Hi Maintainer,
Interested in working on this issue. I'll implement the requested changes and ensure everything is properly tested before submission.

[Gbangbolaoluwagbemiga]

GM @OluRemiFour , you are assigned, ensure all CI pipeline passes.

[grantfox-oss]

🦊 GrantFox — @OluRemiFour has been assigned to this issue as part of the Official Campaign | FWC26 campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #761)
2. Your PR will be reviewed by the Centurylong maintainers

Good luck! Track your progress on GrantFox.