SECRETS-80 Add version history to overview

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Greptile Overview

Greptile Summary

This PR adds secret version history auditing and rollback functionality to the overview page. Users can now view a timeline of all secret versions, see who modified each version, and restore previous versions. The PR also fixes a bug in group member search that prevented searching by email.

Key Changes:

• Added new SecretVersionHistory component with timeline UI showing version history
• Integrated version history into secret row dropdown menu alongside delete action
• Created new v3 AlertDialog component for restoration confirmations
• Fixed backend validation to allow . and @ characters in group member search (enables email search)
• Enhanced v3 components (Item, Sheet, Empty) with improved styling and UX

Backend Fix:
The group member search validation was updated to include Period and At character types, enabling email-based searches. However, the error messages still reference the old allowed character set.

Frontend Implementation:
The version history feature uses the existing secret version API and integrates cleanly with the permission system. Version restoration creates a new secret update (or change request if approvals are required), maintaining audit trail integrity.

Confidence Score: 4/5

• Safe to merge with minor error message corrections needed
• The implementation is solid with proper permission checks and good UX. Two error messages need updating to match the new validation rules, and some logging could follow the repository's pattern better. No security issues or breaking changes detected.
• backend/src/ee/routes/v1/group-router.ts needs error message updates to match validation changes

Important Files Changed