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Behavior-preserving (extension JS has lint-only CI + your manual test): - api.webRoot() single-sources the baseUrl→web-root transform (strip trailing slash + /api) that was copy-pasted in background.js's self-update check and OPEN_ARTIST_PAGE, whose comments even cross-referenced each other. - exportPlatformCookies(key) shares the extract→verify→upload spine between EXPORT_COOKIES (single) and EXPORT_ALL_COOKIES; it returns a structured outcome so each caller keeps its own response/skip messages verbatim. - popup.js mutedNote(text) replaces the "centered muted note" div hand-rolled in the platform-loading, sources-loading, and empty-sources renderers. No version bump — no behavior change, so it rides the next real ext release rather than forcing an AMO re-sign + reinstall. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NsmJSQxnNxGgtM5Yz4GAqi