GitHub's Releases API exposes a `digest: "sha256:..."` field on every
asset since 2024. We now parse it, hash the downloaded bytes locally,
and abort with ChecksumMismatch if they disagree. Releases that predate
the field (none currently exist for this repo) skip verification rather
than fail, so v0.1.0 / v0.1.1 / v0.1.2 still update normally.
cmd.exe expands `%var%` even inside double-quoted arguments, which
would let a path like `C:\Users\%PATHEXT%\bubble.exe` substitute the
expansion. Real Windows paths with `%` are vanishingly rare, so we
fail fast with UnsafePath rather than ship a bespoke cmd-escape
implementation.
Bumps version to 0.1.3.
Rust's std::process::Command escapes inner double quotes as \" when
wrapping the args(["/c", &cmd]) array. cmd.exe does not understand the
\" escape, so the swap-and-restart command got mangled: `start ""
"PATH"` arrived as `start \"\" \"PATH\"`, which the cmd parser
collapsed into `start \ PATH` — producing the "Windows cannot find
'\'" dialog and aborting the update.
Switching to raw_arg lets us hand cmd.exe the literal command line it
expects. The two quote characters cmd needs to keep are the outer pair
wrapping the whole /c argument; cmd's "more than two quotes, special
chars present" branch then preserves the inner path quotes intact.
Bumps version to 0.1.2 since this is the first updater fix that ships
through the updater itself for any future v0.1.2+ user.
tiennm99