say: one count rule everywhere, and a page she can explain (V-521)

The PR 113 review found four defects in one line file. Swept the other four
families and the Go side for the same four.

The JSON was clean: no undeclared placeholder, no abbreviation spoken, no
single-variant entry left unfixed. One register leak — page_blocked read
"robots.txt" out loud, which is a filename, not a reason he can act on.

The count rule was not clean. Four more copies of the three-way agreement
existed and two of them were wrong: ruPlural produced «1 минут назад» and
«5 часа назад» because formatTime spelled the noun out. pluralTasksRU was a
fifth copy. All of them now call say.CountWord. The pending-notification
summary picks the whole phrase, because the adjective declines with the noun.

cmd/mavend/tick.go

@@ -28,6 +28,7 @@ import (
 	"github.com/kami/maven/internal/pattern"
 	"github.com/kami/maven/internal/phraser"
 	"github.com/kami/maven/internal/routine"
+	"github.com/kami/maven/internal/say"
 	"github.com/kami/maven/internal/store"
 )
 
@@ -627,7 +628,11 @@ func (t *tickLoop) maybeDrainDigest(ctx context.Context, state loop.State, now t
 		fmt.Fprintf(&b, " · и ещё %d", extra)
 	}
 	body := b.String()
-	summary := fmt.Sprintf("%d отложенных уведомлений", len(entries))
+	// The adjective declines with the noun, so the count picks the whole
+	// phrase: 1 отложенное уведомление, 2 отложенных уведомления, 5
+	// отложенных уведомлений.
+	summary := fmt.Sprintf("%d %s", len(entries), say.CountWord(len(entries),
+		"отложенное уведомление", "отложенных уведомления", "отложенных уведомлений"))
 
 	cand := loop.Candidate{
 		Rule:     loop.Rule{Name: "digest", Severity: loop.Severity(maxSev)},