chore(release): v1.4.0

Shortcuts gain several bindings per action, mouse buttons and a searchable
picker, and the stored shortcut schema changes shape, so this is a minor bump.
Existing shortcuts migrate on first launch.

Play release notes state that this release carries no mobile feature changes;
the work is desktop-only.

apps/web/src/components/layout/sidebar.tsx

@@ -139,7 +139,7 @@ export function Sidebar(): React.ReactElement {
           </PhosphorText>
         </Box>
         <Box sx={{ fontSize: '10px', fontFamily: 'ui-monospace, monospace', color: d3roPalette.text.muted }}>
-          v1.3.7
+          v1.4.0
         </Box>
       </Box>