Plugin detail now opens with the design's marketplace card: a
4/3 brand-gradient cover plus install/secondary buttons plus a
permissions list with risk badges on the left, and a category
overline plus serif Newsreader title plus description plus a
4-up real-data stat grid (permissions, high-risk, contributes,
signature) plus a "What it adds to ELY" contributions list on
the right. Every value comes from PluginManifest — no fabricated
ratings, install counts, or feature copy.
Internal: chrome::plugin_detail_view holds the layout, and
chrome::plugin_labels owns the permission scope labels and
contribution copy so plugin_detail_view stays under 500 lines.
The internal_pages/plugin_details.rs shim only handles route
parsing and the missing-plugin fallback.
