Fix: Update React ProductComparison.js SSE handling

Update vision LLM agent with React Product Comparison integration

Frontend build: copy latest React build to static; UI: compare button, full previews, multi-file upload

Frontend build copied to static, add 5 test images, update API integration; ignore static backup folders

Translate Korean UI text to English in OpenAIChat.js

Update OpenAIChat.js to display search results and update static build

feat(frontend): switch OpenAI chat to Vision RAG; wire image base64 to /api/vision-rag/query; add searchType/objectId/class_name and n_results; build and sync to static/

fix(frontend): force preview <img> to contain within container; rebuild & sync CRA assets

style(frontend): responsive preview container using viewport height so entire image fits; rebuild and sync

style(frontend): ensure image preview fits container without cropping; rebuild and sync CRA assets

fix(frontend): constrain preview image to container and improve OpenAI chat error logging; rebuild and sync CRA assets

chore: rebuild frontend and sync to static

Add frontend source code structure for direct development