implement interaction versioning system for frontend history navigation (!38) · Requêtes de fusion · marketing confort / brainboost / brainboost-assistant-devoir-service · GitLab

zakariae yahya a demandé de fusionner feauture/IA-439 vers develop sept. 12, 2025

Add new endpoint GET /history/{userId}/{discussionId}/latest to retrieve only latest versions
- Extend ChildHistoryResponse with versioning metadata (hasVersions, versionCount, isLatest, originalInteractionId)
- Improve editInteractionInPlace method with debug logging and anti-duplicate validation
- Fix getInteractionVersions logic to correctly handle root interactions and versions
- Add repository methods for duplicate prevention (findRecentDuplicates, existsRecentDuplicate)
- Update convertInteractionToHistory to include version counting logic

Closes IA-439