LocalAI pulls models from OCI registries (via go-containerregistry), the
Ollama registry, and OCI blob stores (via oras), but every request went
out with the underlying library's generic User-Agent, so registry
operators had no way to attribute traffic to LocalAI.
Add an oci.UserAgent() helper that returns "LocalAI" (or
"LocalAI/<version>" when the binary is built with a version stamp via
internal.Version) and wire it into all three pull paths:
- pkg/oci/image.go: remote.WithUserAgent on the go-containerregistry
image and digest requests
- pkg/oci/ollama.go: a User-Agent header on the Ollama manifest request
- pkg/oci/blob.go: a LocalAI User-Agent on the oras blob client. This
mirrors oras' auth.DefaultClient (same retry.DefaultClient policy);
only the advertised User-Agent changes.
Implements #6258.
Assisted-by: Claude:claude-opus-4-8 golangci-lint
Signed-off-by: Vijay Sai <vijaysaijnv@gmail.com>
