Phase 4 shipped: Reviewed OpenTofu plans

OpenTofu changes can be planned, reviewed, bound to immutable inputs, and applied only from the exact saved plan.

Phase 4 delivered the first guarded infrastructure mutation workflow.

What shipped#

• Controlled OpenTofu initialization and planning.
• Sanitized structural summaries for human review.
• Immutable bindings across template, inputs, tools, and saved-plan bytes.
• Exact plan-ID application without implicit replanning.
• Durable evidence for started, terminal, cancelled, and ambiguous outcomes.

Read the complete Phase 4 development note or inspect v1.0.0-alpha.4.