Swing Deck v7.5.3

What changed since v7.5.2

• v7.5.3 — close audit items 2-5 + 7 (calibration corpus + coverage gaps)
• test(dashboard-lint): catch backticks-in-html-comment-inside-script bug class

Full diff: pinoy81/swing-audit@v7.5.2...v7.5.3

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Built from pinoy81/swing-audit@3126607.