The depth axis is done — CEK (Layer 0) through patterns (Layer 4) are all specced, bootstrapped, and tested. Rewrite the plan to reflect reality and reframe the next steps as validation (serialization, stepping debugger, content-addressed computation) before building superstructure (concurrent CEK, linear effects). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>