Give email addresses their mailto identity

[jviotti]

Signed-off-by: Juan Cruz Viotti jv@jviotti.com

[augmentcode]

🤖 Augment PR Summary

Summary: This PR makes RFC 5321 email addresses carry a stable Linked Data identity by minting mailto: IRIs.

Changes:

• Annotated the email address schema with x-jsonld-self: "mailto" so RDF/JSON-LD output uses mailto: identifiers
• Added a new examples/contact-card.json schema demonstrating a person with email (mailto), account (acct), and website (URI) identities
• Added example-level tests for the new contact card schema including expected RDF output
• Expanded email address schema tests to assert minted mailto:@id values (including percent-encoding and domain normalization)
• Bumped @sourcemeta/jsonschema dev dependency to ^16.6.0 to support/validate the new behavior

Technical Notes: The updated tests verify canonicalization behavior such as lowercasing the domain part and percent-encoding characters that are unsafe in a mailto IRI.

_{🤖 Was this summary useful? React with 👍 or 👎}

[augmentcode]

Review completed. 2 suggestions posted.

Comment augment review to trigger a new review at any time.

[augmentcode]

schemas/ietf/email/5321/address/v1.json:11 — Since x-jsonld-self mints a mailto: IRI, consider also linking to RFC 6068 (mailto URI scheme) in x-links so the new identity semantics are documented alongside RFC 5321.

Severity: low

_{🤖 Was this useful? React with 👍 or 👎, or 🚀 if it prevented an incident/outage.}

[augmentcode]

examples/contact-card.json:29 — account uses x-jsonld-self: "acct" but is otherwise unconstrained (type: "string"), so some values could validate yet still produce an invalid acct: IRI in RDF output. Consider constraining the allowed value space to inputs that are safe to embed as an acct identifier.

Severity: medium

_{🤖 Was this useful? React with 👍 or 👎, or 🚀 if it prevented an incident/outage.}