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The "Synka bank nu" row in the transactions Importera split button fired syncAll() with zero visual feedback. SplitButton now takes busy/busyLabel per option: the primary face and the menu row swap to a spinning Loader2, show the busy label and go inert until the action resolves. useBankSync holds isBusy across the whole syncAll loop so the spinner does not flicker between per-connection syncs. Sweep of the rest of the system for async buttons missing the same feedback (convention: disabled + Loader2 animate-spin + label swap): - bokslut DigitalInlamning "Uppdatera status" (Bolagsverket poll): had no feedback at all; now disabled + spinner + "Uppdaterar ..." while polling - Stripe settings "Synka nu": had disabled + label swap but a static icon - Skatteverket "Verifiera": had disabled + label swap but no spinner - AgentMemoryPanel "Dolj"/"Aterstall" row actions: static icons on async patch; now swap to spinner for the busy row Checked and intentionally unchanged: Arcim migration "Synka igen" and "Ateranslut" (the whole step flips to a spinner view synchronously on click), skattekonto "Forsok igen" (page flips to loading view), AgentChat "Generera om" (streaming indicator is the feedback). Co-authored-by: Claude Fable 5 <noreply@anthropic.com>