Focus Group Management and Analysis Module for RUXAILAB

RUXAILAB supports five study types but lacks focus group functionality. This project adds FOCUS_GROUP as a new study type under the Inquiry category, delivering structured session configuration with discussion guides, real-time multi-participant data capture via Firebase RTDB, manual thematic structuring, and NLP-assisted analysis through cost-tiered Python Cloud Functions. Core deliverables include the full focus group lifecycle - create, configure, run, capture, persist, and analyze - following the established Heuristic module architecture. Stretch goals include a LiveKit SFU integration for reliable video, sentiment-analysis-api integration for audio sessions, and a PDF report generator.