Hold a decision record to the words rules only from 2026-10-11 (review of #206)

hq's words check never read a decision record, so a correction to any decision
of October 7 to 10 was refused for words it was allowed to write. The links an
accepted record holds are kept by its correction without being judged again.

modules/mesh-knowledge/cmd/mesh-knowledge/dated_test.go

@@ -56,11 +56,16 @@ func TestEachDatedRuleHoldsFromItsDay(t *testing.T) {
 		{"clause-lead", "2026-10-10", "2026-10-11"},
 		{"checked", "2026-10-10", "2026-10-11"},
 	} {
-		if Holds(c.rule, c.before) || !Holds(c.rule, c.from) {
-			t.Errorf("%s holds a record of %s: %v, of %s: %v", c.rule, c.before, Holds(c.rule, c.before), c.from, Holds(c.rule, c.from))
+		if Holds(c.rule, KindResearch, c.before) || !Holds(c.rule, KindResearch, c.from) {
+			t.Errorf("%s holds research of %s: %v, of %s: %v", c.rule, c.before, Holds(c.rule, KindResearch, c.before), c.from, Holds(c.rule, KindResearch, c.from))
 		}
 	}
-	if !Holds("title", "2026-01-01") {
+	for _, rule := range []string{"retired-word", "daemon-line"} {
+		if Holds(rule, KindDecision, "2026-10-10") || !Holds(rule, KindDecision, "2026-10-11") {
+			t.Errorf("%s holds a decision from another day than 2026-10-11", rule)
+		}
+	}
+	if !Holds("title", KindDecision, "2026-01-01") {
 		t.Error("an undated rule does not hold an old record")
 	}
 }
@@ -77,3 +82,17 @@ func TestANewRecordIsNotDatedBeforeItsReservation(t *testing.T) {
 		t.Fatalf("a new record dated before its reservation: %v", err)
 	}
 }
+
+// hq's words check never read a decision record: a decision keeps the words it was written with. A correction to
+// ADR 0276 (2026-10-10), which writes words and lines those checks held only research and issues to, is taken.
+func TestAnInsightToADecisionOfOctoberKeepsItsWords(t *testing.T) {
+	w := newWorld(t, newMemStore(), hqMain(t))
+	if _, err := w.k.Import("import@test", ImportAsk{}, hqMain(t)); err != nil {
+		t.Fatal(err)
+	}
+	for _, n := range []int{276, 240, 244, 272} {
+		if _, err := w.k.Propose("corrector@ace", insightTo(t, w, Key{KindDecision, n})); err != nil {
+			t.Errorf("an insight to ADR %04d was refused: %v", n, err)
+		}
+	}
+}