Link carries type="button" on an <a> #553

• Where: link.rb default_attrs {type: "button", ...}, copied from Button. Snapshots link/*.
• Effect: type on an anchor names the linked resource's MIME type; button is meaningless there. Invalid, harmless.
• Fix: drop type: from Link's default_attrs; re-record link/*.

Surfaced by the strict lane of the golden HTML suite (PR #548), which pins what 1.6 renders today — this defect included. Per maintainer decision (2026-09-19) main stays as is: this is addressed on the 2.0 line, and the golden snapshots that pin it are re-recorded there with the diff reviewed.

Source: design/v2/follow-up-issues.md.