Repoint ADR references after HQ consolidated 65 records to 23

96 comments across the two repos named records that no longer exist. Each now
points at the consolidated record that holds its reasoning -- ADR 0034 (a test
defends a decision) is 0017, the eight host records are 0005, the four lab
records are 0016.

Worth noting for next time: these are references from outside HQ, so renumbering
there is not free. It cost 38 files here.

internal/system/system.go

@@ -1,6 +1,6 @@
 // Package system is the part of the host that differs between operating systems.
 //
-// novox/hq ADR 0060. A machine has apk because it is Alpine; the package manager, the service
+// novox/hq ADR 0005. A machine has apk because it is Alpine; the package manager, the service
 // manager and the packaging format arrive together as one decision somebody made at install
 // time. So they are not independent knobs — they are one implementation, named after the system
 // it belongs to.
@@ -75,7 +75,7 @@ func Supports(s System, t declaration.Type) bool {
 // Check refuses a declaration naming a shape this host cannot apply.
 //
 // Refused whole and before anything is applied, which is the same treatment an unknown type
-// gets (novox/hq ADR 0043) — a host that applied the parts it understood would leave a machine
+// gets (novox/hq ADR 0005) — a host that applied the parts it understood would leave a machine
 // that looks configured and is not. The reason differs and the outcome does not.
 func Check(s System, d *declaration.Declaration) error {
 	var problems []string
@@ -116,7 +116,7 @@ func everyShape() []declaration.Type {
 // portableShapes need only a filesystem and a way to run something.
 //
 // The floor. A host that can do nothing else can still do these, which is what makes a partial
-// host a real thing rather than a broken one (novox/hq ADR 0060).
+// host a real thing rather than a broken one (novox/hq ADR 0005).
 func portableShapes() []declaration.Type {
 	return []declaration.Type{
 		declaration.TypeDirectory, declaration.TypeFile, declaration.TypeAction,