internal/pkg: pass cure context as single value

This cleans up the function signature and makes backwards compatible API changes possible.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/pkg/net.go

@@ -7,8 +7,6 @@ import (
 	"net/http"
 	"sync"
 	"syscall"
-
-	"hakurei.app/container/check"
 )
 
 // An httpArtifact is an [Artifact] backed by a [http] url string. The method is
@@ -101,7 +99,7 @@ func (a *httpArtifact) do() (data []byte, err error) {
 }
 
 // Cure returns syscall.ENOTSUP. Callers should use Data instead.
-func (a *httpArtifact) Cure(*check.Absolute, *check.Absolute, CacheDataFunc) error {
+func (a *httpArtifact) Cure(*CureContext) error {
 	return syscall.ENOTSUP
 }