Disable public Gemini news endpoint on HF

feat: integrate local architecture with HF Space

fix: short_buy/short_sell missing columns + monthly_revenue datetime precision + Dockerfile compile flag

feat: add institutional signals and HF-friendly deploy

fix: add libgomp1 for LightGBM OpenMP support in Docker

feat: stock chart image for LINE Bot + new /chart-image endpoint

perf: add history data cache + reduce workers to 1

feat: comprehensive optimization — 30 improvements across ML, perf, frontend, security, architecture

fix: add curl to slim image for healthcheck, precompile pip packages

fix: remove hardcoded creds, add rate limiting, unify thresholds, cache stock info

refactor: improve ML features, LINE Flex Messages, watchlist panel, health endpoint

fix: show BacktestPanel as soon as stock loads; force HF rebuild

deploy: initial release