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RPI — Research-Plan-Implement Sub-Cycle
Research-Plan-Implement sub-cycle methodology for the CKS feature lifecycle. Defines the R-P-I sequence within each phase, quality gates between stages, artifact contracts, and iteration-aware refresh. Use when: checking R-P-I status, enforcing research-before-planning gates, validating plan-before-implementation gates, refreshing stale research on iteration loops, or when the user says "rpi", "research plan implement", "quality gates", "artifact handoff", "what stage am I in", "why is planning blocked", or any variation of R-P-I sub-cycle management.