add visual report: 4 charts auto-render after episode

add visual report: 4 charts auto-render after episode

fix multi-replica: agent_step self-contained, passes task+region

fix rate limit - add delays for Gemini free tier

v2: real agent, 5 Indian regions, region-aware tasks

fix object Object error in endpoint display

rewrite UI - fix all interaction bugs

rewrite UI - fix all interaction bugs

fix all UI bugs - safe fetch, episode flow, scoring

add static UI folder with index.html