The Správa kategorií modal footer had two buttons that both just close it (Zrušit + Zavřít). Added an opt-in hideCancel prop to the kit Modal (default false → every other modal unchanged) and set it on PlanCategoriesModal, leaving only 'Zavřít'. Verified: footer shows only Zavřít; close/Escape/backdrop intact.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
On save/delete success the parent flips loading false a beat before the dialog finishes its fade-out, so the button flashed back to 'Uložit změny'/'Smazat'. Both dialogs now freeze the loading flag (and the label props) while open, so the closing dialog keeps showing 'Ukládám…'/'Pracuji…'. Same derive-state-from-props pattern as the title freeze.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Scroll: MUI only locks <body>, but base.css 'html{overflow-x:hidden}' makes <html> the vertical scroller (overflow-x:hidden forces overflow-y:auto), so the page scrolled behind modals. Added a ref-counted useDialogScrollLock that locks <html> (with scrollbar-width padding) + disableScrollLock on the kit dialogs. Labels: Modal now freezes title/subtitle/submitText while closing (derive-state-from-props), so editing then saving no longer briefly flashes the 'create' title/button during the fade-out.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
