Fix API capability check for partial File System Access API support - #4
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The previous guard used !showOpenFilePicker as a proxy for all three File System Access APIs. Opera Mobile exposes showOpenFilePicker but not showSaveFilePicker, so 'Create new board' appeared enabled but crashed on click with 'showSaveFilePicker is not a function'. Now each button is disabled against the specific API it needs: - new-btn → showSaveFilePicker - open-btn → showDirectoryPicker + showOpenFilePicker - CSS/icon pickers → showOpenFilePicker https://claude.ai/code/session_018ZdAC8waAK19WE1ReL9UGc
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Summary
!showOpenFilePickeras a proxy for all three File System Access APIsshowOpenFilePickerbut notshowSaveFilePicker, so "Create new board" appeared enabled but crashed on click withshowSaveFilePicker is not a functionnew-btn→showSaveFilePickeropen-btn→showDirectoryPicker+showOpenFilePickershowOpenFilePickerTest plan
delete window.showSaveFilePickerthen reload — "Create new board" disabled, "Open project folder" still enabledhttps://claude.ai/code/session_018ZdAC8waAK19WE1ReL9UGc