feat: integrate 9 cutting-edge agent tools into ScienceClaw

fix: deep review — skill names match CATALOG.json, web_fetch→bash+curl in architecture, add missing New Features to JA/KO

docs: world-class documentation overhaul — README + docs/ + i18n

fix: deep review — 14 issues across 19 files

chore: remove yunwu.ai references, replace with OpenRouter

feat: add Research Recipes, export skills, literature monitoring, and polish for release

fix: allow visible API key input during setup

chore: remove private PUMC thesis skills from public distribution

fix: block gateway start on invalid API keys with friendly guidance

fix(ci): exclude docs/ and placeholder tokens from security scan

feat: add DeepSeek provider, model health check, and beginner-friendly diagnostics

feat: deep search overhaul — Brave Search + multi-source academic pipeline

fix: disable web_search, use bash+curl for all academic searches

fix: configure web_search to use Kimi provider (yunwu.ai compatible)

fix: remove all refusal patterns — no restrictions, no disclaimers