feat: Implement Multi-AI Architecture with Google Gemini provider and failover logic

feat(Sprint 40): Boucle interactive Deep Dive & persistences des réponses

chore: execute Sprint 38 technical debt resolution (Type Safety, Zod validation, Vitest, Mock LLM extracted)

feat: Genspark-Standard upgrade, MLOps audit fixes, and XAMLÉ branding

feat(admin): build Ground Truth Training Lab to calculate WER and capture dictionary improvements

feat(admin): display Whisper STT confidence score in moderation live feed

feat(admin): human-in-the-loop dashboard base, add PENDING_REVIEW logic and audio overdrive worker

fix(ai): implement pedagogical leap fixes, pending_remediation, coherence locks and cache wipes

fix(ai): add imageUrl field to Prisma schema and correctly route language selection inside whatsapp.ts

feat(sprint19-20): production-ready video integration & STT hardening

feat(wolof): standardized tracks T1-T5 with glossary v4.0 and implemented adaptive multi-sector architecture

feat(audit): hardened graduation flow and industrialized badge system

feat(pedagogy): implementation of dynamic content infrastructure and evaluation criteria

feat: implement adaptive pedagogy, visuals, and remediation (WOW Phase 1)

feat: implement WOW Sprint 1 (BusinessProfile, Structured Feedback, STT Hardening, Progress Bar)

fix: cascade delete for responses and clean worker startup

feat: complete audio pipeline hardening and audit requirements

feat: implement STT inbound audio, TTS fallback, and Interactive Lists

refactor(prod): unify currentDay exclusively in Enrollment model to fix scheduler sync

feat(whatsapp): implement interactive pedagogy architecture with Voice and Button routing

feat(payment): integrate stripe checkout, webhooks, and worker dispatch

Initial commit: Monorepo setup with React+Vite, Fastify, Prisma, and Docker Compose