feat(release): make the signing-free install work with nothing but Windows

The manual install path still needed 7-Zip, which the target machine does not
have, so "installable without a certificate" was not yet true.

The channel now also publishes the app as byte-split zip parts, and the install
script joins them and extracts with the built-in Windows Expand-Archive after
verifying every part and the joined archive. Version 1.3.1 republishes the
channel from a single build, because a version's artifacts can only match one
build and published volumes are never overwritten.

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 }}>
-          v1.3.0
+          v1.3.1
         </Box>
       </Box>