fix(dashboard): resolve action_taken from audit log, improve UI

dashboard: fix case detail link + add cluster graph + evidence features

readme: full rewrite — clean UTF-8, accurate content, no encoding artifacts

demo-day: re-run Razorpay actions for new pipeline, regenerate audit log

eval: update eval_results.json latency (0.019ms/cluster from fresh run)

demo-day: rebuild BOUNDARY01 as genuine hard case, fix evaluate.py threshold, regenerate pipeline

Dashboard: replace IBM Bob footer with Rohit + GitHub link

Fix HF Spaces README metadata (valid color values)

RingGuard Phase 3 - initial HF Spaces deploy