Phase 3 shipped: Immutable template sources

Local and Git-subdirectory template sources can be locked, materialized, verified by digest, and checked for drift.

Phase 3 introduced the immutable template boundary consumed by every lifecycle operation.

What shipped#

• Local and Git-subdirectory source resolution.
• Canonical lock records with immutable revisions and tree digests.
• Contained, private template materialization and verified cache reuse.
• Explicit source updates with visible changes.
• Deterministic source, lock, digest, and cache drift diagnostics.

Read the complete Phase 3 development note or inspect v1.0.0-alpha.3.