Changelog
Recent product, content, and public-site updates.
2026-03
EngagedLab v5.0 — Advanced Pipeline Observability
Structured log explorer with batched DB writes, OpenTelemetry tracing with custom span exporter, quality-gated rollout automation (auto-promote/hold thresholds), and expanded Promptfoo coverage for latency, cost, and cross-domain regression testing.
2026-03
Security & authentication hardening
SAML 2.0 signature validation via @node-saml, OIDC + PKCE authorization code flow, TOTP MFA with AES-256-GCM encrypted secrets, 4-hour JWT session timeout with auto sign-out, auth guard on protected routes, bcrypt enforcement, and comprehensive security audit.
2026-03
SCORM 2004 & LTI 1.3 AGS export
Full SCORM 1.2 and SCORM 2004 (3rd & 4th Edition) packaging with sequencing, mastery rules, rollup rules, and Blackboard-optimised export. LTI 1.3 with OIDC login flow, JWT launch verification, and Assignment & Grade Services (AGS) grade passback.
2026-03
Bayesian mastery analytics & adaptive routing
Bayesian Knowledge Tracing (Corbett & Anderson 1995) with pL0 = 0.3 and mastered threshold = 0.9. Five adaptive content routes: practice, challenge, review, advance, and remediate based on real-time mastery estimates.
2026-03
Content governance & quality scorecard
Seven-dimension quality scorecard (minimum 60/100 for export), educator_defined vs ai_generated governance modes, content history tracking, and automated regeneration for below-threshold labs.
2026-02
Public pages expansion
Added 17 UK-focused subject pages, institutional partnership pages, integration guides, and comparison routes with structured metadata, JSON-LD, and schema.
2026-02
Conversion improvements
Implemented Upload & Wow flow with backend capture, rate limiting, and email notifications.
2026-02
SEO hardening
Expanded metadata coverage, canonical/hreflang support, robots/sitemap updates, and route-level JSON-LD.
2026-02
Internationalisation & theming
Full next-intl integration with English and German locales, locale-prefixed routing, and three-mode theme system (light, dark, system) persisted to user profile.
2026-01
Gemini AI generation pipeline
Multi-phase lab generation with Gemini 3 Flash and 3.1 Flash-Lite via Vertex AI, 9 AI workloads with fallback cascades, BullMQ background jobs with Redis queue and DB polling fallback, and WebSocket real-time progress updates.