Pattern Proposal: Proposal-Only Steering Projection

Summary

Decouples automated architecture evaluation and projection synthesis from target file mutation by emitting proposal artifacts.

Candidate Pattern

• ID: pattern-proposal-only-steering-projection
• Classification: governance
• Maturity: established
• Type: implemented

Observed Signals

No specific signals listed.

Evidence

Supporting Evidence

• src/cas_runner/steps/steering_projection.py - Emits proposal-only steering projections without directly mutating operational branches

Scope Assessment

• Evidence Strength: high
• Confidence: high
• Applies to: ideas-to-life-cas

Rationale

• Intent: Preserve human oversight and prevent race conditions by requiring explicit approval before applying steering projections.
• Context: CI/CD workflows and automated runs evaluating system architecture state.
• Force: Unchecked mutations during automated runs risk trunk branch instability.

Traceability

Artifact source: proposed-patterns