Fix: role-type skill detection, OpenRouter base_url support, Dockerfile for HF Spaces with 500-profile sample indexes

fix: reranker degradation, skip_reranker bug, eval latency, branch cleanup

feat: full 100k index pipeline - switch from samples to full offset index

Fix cross-encoder loading, add offline mode, improve simple query detection

chore: add hackathon submission assets, move slider defaults to YAML config

feat(100K): index full 100K dataset, 500-query eval, server validation