Force rebuild: add RUN check for model-en-mixed.bin to invalidate Docker cache

Force rebuild: add comment cachebuster to Dockerfile

Fix Dockerfile: remove broken cp line, model-en-mixed.bin is in public/vendor/ directly

Fix: revert Dockerfile to copy model-en-mixed.bin from node_modules at build time (binary file can't be uploaded via text API)

Simplify Dockerfile - vendor files now committed directly to repo

Fix Dockerfile: copy talkinghead vendor files (worklet + model) to public/vendor/

Simplify Dockerfile - concat handled at runtime in index.ts now

Fix: cat part1 + part2 in Dockerfile to produce complete app.js; remove broken updateAvatarThumbPreview

Fix Dockerfile: use Bun base image instead of Python (was hanging forever)

Fix: remove invalid bun.lockb, update Dockerfile

Fix: update Dockerfile to skip bun.lock during build

Initial commit: gemma-avatar + V.AISTUDIO product RAG