Opening a PDF cost four clicks across two screens: the dock icon, a dropdown
with a single entry in it, an editor with an empty drop zone, and finally the
Open button that produced a file browser. Three of those were the program
asking the user to confirm what they had already said by clicking a PDF icon.
The dock item now raises the file browser itself. The dialog is native and
raised from the add-on's Node side, because a file:// page cannot open one
without a user gesture of its own and a freshly-opened tab has none to spend.
The chosen file goes through the same scratch handoff a right-clicked link
already used, so the editor opens with the document in it rather than with an
invitation to find one. Cancelling still lands in the empty editor, which is
where drag-and-drop works and is probably still where someone who changed
their mind about the file wants to be.
Second click removed in the chrome: a toolbar menu holding exactly one item is
not a menu, it is a button wearing a dropdown, so it now dispatches directly.
Falls through to the popup if the renderer has no addonMenuSelect.
Not yet exercised end to end — TheseusNavigator/node_modules is empty while
another session reinstalls it, so the CDP suites cannot boot Electron. Both
files parse; run scratchpad/verify-pdf-editor/drive.mjs once the tree is back.
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