Uploading an agent build whose product version carried semver build metadata
(1.5.0+abcdef) was rejected, because the typed version string was validated as
a dotted-numeric value before the file was ever read. That string is only a
hint from the operator, and the build metadata it carries is not a legal
directory name for the version store.
The authority is the dotted-numeric FILE version stamped in the binary PE
resource, so validation now happens after the upload is parsed: when the typed
value is missing or not dotted-numeric, fall back to the detected version, and
reject only when neither yields a usable one.
