feat: populate episode log with last task on run all

fix: add loading state to runAllTasks

feat: visually stunning dataset evaluation UI

fix: resolve dataset evaluation error + add dataset builder with type specification

Fix dataset evaluation signature mismatch

Restore binary files using Git LFS

Final optimizations, RL endpoint, dataset upload UI, and Hackathon artifacts

Allow empty POST body for reset endpoint

Switch reward bars to line chart and tighten episode layout

Improve dashboard visuals and episode output

Sync final Hugging Face Space changes back to GitHub

Sync local project updates to sham branch