chore(deps): bump dappco.re/go/io to v0.8.0-alpha.1

Pre-migration v0.x.y tag versions are no longer publishable; v0.8.0-alpha.1
is the canonical target across the dappco.re/go/* namespace per
2026-04-24 Lethean release-gate sweep.

Co-Authored-By: Athena <athena@lthn.ai>
Co-Authored-By: Virgil <virgil@lethean.io>

Author: Snider

go.mod

@@ -4,5 +4,5 @@ go 1.26.0
 
 require (
 	dappco.re/go/core v0.8.0-alpha.1
-	dappco.re/go/io v0.4.1
+	dappco.re/go/io v0.8.0-alpha.1
 )