feat: stabilize AI engine, harden Zod schemas, and implement UX guardrails

fix: Correct audio handler brace structure - FR users now get confirmation and feedback after voice message

fix: Update Gemini model names and harden transcription body reader

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

fix(whatsapp): Sprint 42 - Sécurisation routage Deep Dive et immuabilité secteur

fix(ai): Sprint 41 - Détanchéité linguistique Wolof stricte et réinjection boucle Deep Dive

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

feat(ai): refactor coach feedback to 3-pillar format with mandatory browsing (Sprint 39)

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

fix(qa): resolve missing image anomalies and secure pedagogy worker TTS audio flow

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

feat(ai): integrate Whisper STT confidence score for auto-validation

chore(pedagogy): add badge guard debug logs for remediation visibility

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

fix(core): remove AI jus-de-fruits hallucination, expand onboarding sectors to 8, streamline pedagogy menu and lock REPRISE badge

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

fix(ai): remove double day incrementation on success and queue remediation correctly

feat(ai): expert coaching system with persistent business context and explicit SUITE progression fix

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

fix(stt): resolve post-transcription silence and harden gateway detection

Fix Post-STT Blockage: Async chain, Intent detection, and Feedback fallback

Audit Final: Fix feedback message construction & Global Hardening

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

chore: final logic hardening, AI prompt reinforcement and SUITE command fix

fix(audit): ensure badges are only awarded on successful exercises

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

feat(graduation): implementation of T1->T5 flow and full track normalization

feat(ai): fully operational v1.0 criteria engine and 5-level curriculum (10 modules)

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

fix: final hardening audit fixes (normalizeCommand, activityLabel key, Zod schemas)

feat: localize AI documents (FR/WO) and fix Zod warnings

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

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

feat: audit and hardening of audio pipeline, AI localization, and WhatsApp UX improvements

feat: allow http for internal railway networking in config

feat: complete audio pipeline hardening and audit requirements

fix(worker): Prioritize live WHATSAPP_ACCESS_TOKEN environment variable over stale BullMQ job payload to prevent 401 loops

feat(audio): Enforce strict AI_API_BASE_URL and add FFmpeg MP3 STT conversion

feat(audio): Complete robust outbound/inbound pipeline and async AI generation

fix: Prevent HF webhook from pushing empty Whatsapp access token to Railway worker

chore: Add extensive debugging logs to audio download-media job

fix: Split Webhook into Gateway (HuggingFace) and Processor (Railway), fix missing https:// in API_URL

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

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

feat(prod): implementation of missing features for production readiness

fix(audit): 6 bugs fixed — static imports, store-audio endpoint, CONTINUE fallthrough, SUITE regex, no more require() calls

feat(ux): interactive buttons for language choice + LIST menu for sector selection (8 sectors FR/Wolof)

fix(audit): add /v1/ai/transcribe endpoint + fix cross-package storage require in worker

feat(arch): interactive LIST menu, audio download-media job, OpenAI 429 fallback, DAY action IDs