Hold what mounts a missing disk, and say entries the mesh could not take out (hq ADR 0325 re-review)

A container was still created over an unmounted mount point, so its writes landed on
the filesystem below; a folder moved to another disk was kept on the old warrant; and
entries left by a drop or a move that could not run lived only in a log line. Every
container mounting an access whose disk is away now waits, the warrant holds only for
the filesystem it was carried out on (the wait names the new one, path-free), entries
left on a filesystem are recorded per mount and taken out when it is back, and every
leftover is said as unhealthy until it is. A hung stat is shared per path, and a
widened mask takes from other entries only the bits it adds.

internal/apply/apply.go

@@ -1135,11 +1135,11 @@ func applyOne(ctx context.Context, sys system.System, r declaration.Resource, ru
 			return begin(r), err
 		}
 		// Not created over an accessed folder not there, which the runtime would make as root (novox/hq ADR 0325 §9).
-		if id := mountsMissing(res, in.accesses); id != "" {
+		if id := mountsMissing(ctx, res, in.accesses); id != "" {
 			out := begin(r)
 			out.Action = "waiting"
-			out.Detail = "not created: it mounts the access " + id + ", whose folder is not there; created once it " +
-				"is (novox/hq ADR 0325 §9)"
+			out.Detail = "not created: it mounts the access " + id + ", whose folder or its disk is not there; " +
+				"created once it is (novox/hq ADR 0325 §9)"
 			return out, nil
 		}
 	}