Publish instruction skill starter release

packages/planner-scope/scope.md

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+# Scope guide
+
+- State the user-visible outcome and the exact part of the system affected.
+- Name prerequisites and neighboring work that change the boundary.
+- Distinguish verified current behavior from a proposal.
+- Identify one observable success path and one meaningful failure or recovery path.
+- Record uncertainty as an open decision; do not turn silence into approval.