Individual skill

porting-execute

Begin writing code for the current milestone. This is the explicit go-signal after /porting-start-milestone preparation has been reviewed and approved by the user.

game-porting-skills/skills/porting-execute/SKILL.md

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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.