Add Semantic Scholar integration: citation graph, filtered search, snippet search, recommendations

Redesign research subagent display with live stats and rolling steps

Show cancelled prompt in shimmer status bar instead of chat input placeholder

feat: beautiful research sub-agent UI with inline progress steps

feat: improve bash tool status labels in activity bar

stream sandbox creation logs to tool output, fix hf_jobs final status race

sync: org onboarding, model updates, sandbox cleanup, prompt fixes

feat: resolve sandbox file paths and show tool description in status

feat: merge HF Space improvements