Expand description
Cocoon → Mountain unregister_scm_provider notification.
Emitted by Cocoon/.../ScmNamespace.ts:82 when
vscode.scm.createSourceControl(...).dispose() fires. The paired
RegisterScmProvider typed gRPC (RPC/CocoonService/SCM.rs) derives
the handle as a DJB-style hash of the scmId; we recompute the same
hash here so unregister cleans up the exact entry RegisterScmProvider
stored without needing Cocoon to hand the u32 back over the wire.