mesh-issues: take every condition key the controller raises, a delivery's with its slash among them (hq issue 475)

The tracker's own pattern refused the slash a delivery's id carries, so no issue
could track a delivery's condition and the operator's alert kept saying no issue
tracks it. Mirror the controller's key rule instead of a pattern of our own; a
router test proves a slashed key is matched and named end to end.

modules/mesh-issues/cmd/mesh-issues/tracker_test.go

@@ -473,7 +473,7 @@ func TestLinksAreTypedAddedOnceAndRemoved(t *testing.T) {
 		{Kind: LinkPullRequest, Target: "mesh-controller#246"},
 		{Kind: LinkDecision, Target: "0275"},
 		{Kind: LinkDesign, Target: "03-DESIGN/01-to-be/53-the-issue-tracker.md"},
-		{Kind: LinkCondition, Target: "healer-wanted.ace.backup"},
+		{Kind: LinkCondition, Target: "mesh.hand-acts.backup.healer-wanted"},
 		{Kind: LinkDelivery, Target: "d-2026-10-10.3"},
 	}
 	for _, l := range good {
@@ -494,7 +494,7 @@ func TestLinksAreTypedAddedOnceAndRemoved(t *testing.T) {
 		{LinkAsk{Kind: LinkDecision, Target: "275"}, "four-digit"},
 		{LinkAsk{Kind: LinkDesign, Target: "03-DESIGN/../../etc/passwd"}, "design document"},
 		{LinkAsk{Kind: LinkCondition, Target: "a key\nwith a line"}, "condition"},
-		{LinkAsk{Kind: LinkCondition, Target: "token=abcdefgh123"}, "secret"},
+		{LinkAsk{Kind: LinkCondition, Target: "machine.ace.token=abcdefgh123.leaked"}, "secret"},
 		{LinkAsk{Kind: LinkRelatesTo, Target: keyOf(b), Remove: true}, ""},
 		{LinkAsk{Kind: LinkRelatesTo, Target: keyOf(b), Remove: true}, "no relates-to link"},
 	}