affaan-m/ECC Ships a Cross-Harness 'Performance Optimization System' — Skills, Instincts, Memory and Security Portable Across Claude Code, Codex, Opencode and Cursor

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ECC bills itself as an agent harness performance optimization system, layering skills, instincts, memory, security and research-first development onto whichever agent CLI you already run — explicitly naming Claude Code, Codex, Opencode and Cursor. The 'instincts' primitive is novel: a layer distinct from skills that encodes reflexive behaviors rather than invokable procedures. This is the clearest example yet of the harness-portability category — tooling that assumes you will switch coding agents and refuses to bet on one.