feat: add CLI install flow and OpenSpace setup helper

feat: Claude Code plugin + 17 features from 7 research projects

feat: port 9 patterns from Agentic Researcher, DeerFlow, codex-autoresearch, AutoKernel

feat: auto-lessons from keep/discard (MetaClaw pattern)

feat: ensemble evaluation (3 judges) + debug retry on failure

fix: sandbox write issue + promote gen_0002

feat: multi-agent competition + skills registry (Hive patterns)

feat: pairwise preference evaluator + trajectory capture + auto-evolve hooks

feat: initial release of UltrAgent