Splits the 3133-line options.js into three vanilla scripts loaded in
order at the bottom of options.html:
options-cache.js 161 lines (Cache & Scans block)
options-dupe-review.js 616 lines (Duplicate Review + Keep Ranking)
options.js 2356 lines (everything else)
No behavior change. Cross-file references work because classic <script>
tags share the global declarative environment: top-level `let` bindings
in options-cache.js (_configuredScanRoots, _cacheSkippedByRemote) are
visible by bare reference in options.js, where Library Issues still
reads them. Calls into options.js from the extracted files
(escapeHtml, openModal/closeModal, keepActionViewport,
clearNativeRepairCard, renderNativeMessagingFailure) all occur inside
event handlers, resolved at call time after options.js parses.
node --check passes on each file individually and on the concatenation
of all three in load order. Brace counts balanced.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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