🐞 Voting Portal: Correct heading and static-information semantics

[Findeton]

Parent issue: https://github.com/sequentech/meta/issues/13191

Render ballot-card titles as h2, footer attribution (including translation-error feedback) as paragraphs, and version/hash as static text instead of disabled buttons. Preserve existing CSS hooks, typography, dimensions and responsive visibility.

Verified: all four semantic regressions fail before and pass after; all 40 shared-UI tests, touched-file ESLint/Prettier, and the ui-essentials build pass. Browser accessibility-tree and computed-style checks confirm the heading list, static version/hash, preserved footer link and matching version dimensions. Checked desktop, 768px and 390px widths. Actual screen-reader speech remains a manual verification item; no claim that version/hash were previously Tab stops.

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