fix(react): key custom page portals by stable id#8730
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jacekradko merged 1 commit intoJun 2, 2026
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CustomPortalsRenderer keyed portals by array index, so adding, removing, or reordering custom pages remounted the survivors even though their portal identity was stable. Each portal now carries a stable key derived from its portalId, so React reconciles a moved page as an update. Includes jsdom and e2e coverage for the remount behavior.
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Follow-up to the custom-page remount fix. That change stabilized each portal's identity so a custom page survives a parent rerender; this goes one step further.
CustomPortalsRendererwas still keying portals by array index, so adding, removing, or reordering pages remounted the survivors anyway. Each portal now carries a stable key from itsportalId, so a page that moves position reconciles as an update.The hooks now emit
{ key, portal }(withcontent:/label:/icon:prefixes so a page's two portals stay distinct). Coverage added: a jsdom integration test that renders through the real portal path (no remount on a parent rerender or an insert), and an e2e test that a custom page keeps its local state across a parent rerender.