Serve SPA with no-cache headers so HF UI picks up static/index.html after deploy

Bump version to trigger Space rebuild

Fix Bug 4 and Bug 5 from FIXES.md: _handle_history step_log + asyncio lock for start_episode

add SPA frontend: Blog, Training, README, API tabs with Chart.js graphs

feat: 3-phase belief training — probe evidence → model generates belief from observation

fix: run env.step in thread pool inside /run_episode to prevent event loop deadlock

fix: add /run_episode endpoint + update reward_fn to use it

Initial commit: AdaptiveWorld Env v2.0 (Round 2)