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.
Installers could not be published at all: the signing certificate does not
exist yet, and the release pipelines stop at their signing guard. Users had no
way to install a fixed build, so the product was effectively stuck behind a
certificate that takes weeks to obtain.
There is also a second, independent blocker: the download feed sits behind
Cloudflare, which rejects any upload body over about 100 MiB, and the app with
its speech engine exceeds that even when signed.
A portable channel now publishes what can actually be delivered today: the app
compressed into 95 MiB 7z volumes (162 MiB total instead of 243 MiB), a Scoop
bucket for a normal install and uninstall experience, and a verifiable manual
installer script. It is deliberately separate from the auto-update feed, needs
no certificate, and refuses to overwrite an already published version.
