Drop the plan state from the store and the assignments: migration 0108 and placement-only assignments (release 6, issue 1945 B9, B4)

internal/inventory/source.go

@@ -30,7 +30,6 @@ type sourceRow struct {
 	made                    []byte
 	manifest                []byte
 	manifestDigest          string
-	failedGate              bool
 }
 
 // sourceRows is every successful build of each module (of one module, when named), newest request
@@ -53,13 +52,10 @@ func (i *Inventory) sourceRows(ctx context.Context, module string) (map[string][
 func standing(builds []sourceRow, from int) int {
 	at := from
 	fp := builds[from].fingerprint
-	if fp == "" || builds[from].failedGate {
+	if fp == "" {
 		return at
 	}
 	for j := from + 1; j < len(builds); j++ {
-		if builds[j].failedGate {
-			break
-		}
 		if builds[j].fingerprint != fp {
 			if !newForm(fp) || newForm(builds[j].fingerprint) || !sameDigests(builds[at].made, builds[j].made) {
 				break