`TableFooter` ships a corrupted class string

• Where: gem/lib/ruby_ui/table/table_footer.rb:13:
  "border-t bg-muted/50 font-medium[& amp;>tr]:last:border-b-0". The
  amp; is HTML-decoded text pasted into Ruby source; a space before [
  is also missing.
• Effect: every TableFooter emits the tokens font-medium[& and
  amp;>tr]:last:border-b-0 — neither is a Tailwind class, so font-medium
  and the last-row border rule are both lost.
• Fix: "border-t bg-muted/50 font-medium [&>tr]:last:border-b-0";
  re-record (on the 2.0 line) table/*.

Surfaced by the golden HTML suite (PR #536), 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 snapshot that pins it is re-recorded there with the diff reviewed.

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

从 gem/lib/ruby_ui/table/table_footer.rb:13 开始，检查 TableFooter 类字符串是否与 issue 预期的 tokens 一致。在 2.0 线上运行 golden HTML suite，重新记录 table/*，并检查 diff；完成的标准是存在已修正的类和已审查的快照，同时不更改 main。