porting-execute
You are entering Phase 2: Execute for the current milestone. The user has reviewed and approved the preparation summary from /porting-start-milestone.
Locate the agent's artifact directory at <project-root>/.porting/ (defined in porting-methodology). All artifacts live there. Load the porting-methodology skill if not already in context.
Begin Implementation
Implement the approved work items from the preparation summary. Follow the Phase 2 conventions from the methodology (matching engine patterns, leveraging existing systems, consulting loaded skills, stub/hardcoded conventions, building often, assertions).
The approved prep summary is the scope contract. Focus exclusively on the listed work items.
If you discover unexpected work that wasn't identified during preparation, stop and tell the user before implementing it. Present what you found and collaborate on the right response:
- Does it fit naturally into an existing future milestone? → Stub it with the appropriate
STUB(Mx)marker. - Does the goal's milestone plan need new milestones to accommodate it? → Propose specific additions to the plan.
- Is it a small prerequisite that blocks the current work item? → Ask the user to approve adding it to the current scope.
Do not silently expand scope. Do not blindly defer everything — think about where the work belongs.