A few messaging improvements

[alcuadrado]

This PR adds a few little messaging improvements, 1 per commit.

While testing it, I also fixed all the compilation warnings in the templates and example project.

[changeset-bot]

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Latest commit: 8e1bfa2

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Name	Status	Preview	Comments	Updated (UTC)
hardhat	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 29, 2024 9:00pm