Add role-local migrated skill guidance

packages/prototype/SKILL.md

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+---
+name: prototype
+description: Build a disposable local prototype to answer one implementation question.
+disable-model-invocation: true
+metadata:
+  relayview-display-name: Prototype
+  relayview-version: 0.3.0
+---
+
+# Bounded implementation prototype
+
+Name one question the assigned implementation cannot settle by inspection alone: a state transition, algorithm, or visual interaction. Make a small disposable prototype inside the owner-assigned worktree using tools already admitted to the Implementer. Use local fixtures and avoid external services unless the task's existing environment admits them. Make the relevant state or variant visible so the answer can be observed.
+
+Run a small set of cases that could disprove the idea. Record the question, setup, observations, and resulting choice in the implementation handoff. Move only validated behavior into the real candidate and remove disposable scaffolding before reporting a clean candidate. If the prototype itself needs to remain as evidence, request an owner-managed artifact path; do not create or switch Git branches or publish a separate worktree from this skill.

packages/prototype/relayview-skill.json

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+{
+  "schemaVersion": 1,
+  "source": {
+    "kind": "first-party",
+    "reference": "v0.3.0"
+  },
+  "role": "implementer",
+  "step": "implementation",
+  "files": [
+    {
+      "path": "SKILL.md",
+      "sha256": "319fe249629788f51b3c8738ded5a1c88336534ad96fa43e7c80a554f09ef586"
+    }
+  ]
+}