migrate-hardhat2-to-hardhat3

MEDIUM W012: Unverifiable external dependency detected (runtime URL that controls agent).

• Potentially malicious external URL detected (high risk: 0.70). The skill explicitly instructs the agent to fetch official Hardhat documentation at runtime (e.g. https://hardhat.org/llms.txt and related pages such as https://hardhat.org/docs/migrate-from-hardhat2.md) to resolve uncertainties and guide migration steps, so external content fetched during runtime can directly control the agent's prompts/behavior.