ECC, an Anthropic hackathon-winning Claude Code setup (MIT), is open source: 68 subagents, 286 skills, and 94 commands covering plan → architecture → code → test → security → review → repair → ship. Repo: github.com/affaan-m/ECC.
Marwan (@Marwan_3atef) summarized Claude Code point releases 2.1.259–2.1.263 shipping an unattended CI kit: org-pushed managedMcpServers, --permission-prompts none so CI denies instead of hanging, and /skill-doctor for skill context cost. Stable remains pinned at 2.1.236.
@shangdu2005 shared the free MIT Three.js Game Skills pack for Codex / Claude Code: gameplay, 3D, UI, debug, perf, tests, and release QA as specialized skills — so agents ship real H5 games instead of one-shot glowing-cube demos.
Dan Kornas (@DanKornas) open-sourced MIT repo-harness: a file-backed workflow harness for Claude Code and Codex that writes plans, contracts, checks, handoffs, and review evidence into the repo, with Plan→Contract→Review lifecycle, typed hook runtime, progressive context loading, and CodeGraph — so the next session continues from project files instead of chat memory.
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