Synthesized all 5 child research streams (76+ technologies) into a comprehensive final report covering avatar creation platforms, web-based interactive platforms, rendering engines, and mobile/AR frameworks. Delivered a 347-line 18KB report with: platform overview of 76+ solutions mapped across 4 categories, detailed profiles of 10 most promising options (Ready Player Me, Inworld AI, NVIDIA ACE, Hume EVI, Soul Machines, Avaturn, Three.js/WebGPU, Unity, Unreal+MetaHuman, Godot 4.x), 3 recommended stacks (MVP $5-30/mo, Mid-Range $50-200/mo, Enterprise $100K+), market gap analysis, 2026 trends, and final recommendation matrix.