feat: multi-format upload (CSV/PDF/TXT), auto-detect columns, auto-generate IDs

revert: remove candidate cards, use clean markdown with label badges

fix: candidate parser — handle end-of-string during streaming, show partial candidates

fix: candidate card parser — use regex literals instead of new RegExp

chore: gitignore test CSV

feat: candidate cards — parse LLM response into styled cards with skill chips

fix: only close settings on manual model selection, not on fetch

fix: auto-close settings popover after model selection

fix: pre-download FastEmbed model during build, add FRONTEND_URL

docs: update README — fix gitignored refs, add stop/edit features, FastEmbed

perf: replace sentence-transformers with FastEmbed (ONNX) — 4x less memory

fix: pre-download embedding model during build to avoid cold start delay

fix: wake up backend on load + open, retry fetch models, 45s timeout

feat: stop generation button + edit & resend messages

fix: add 15s timeout to fetchModels, cold start message