morning, tasks, memory: say the summaries from the file (V-506)

The three callers now read their sentences out of summary_ru_v1.json: the
plan lines in morning.Plan.FormatRU, the list and reason words in
tasks.FormatRU, and the habit readouts in memory.Profile.

Two behaviour_test assertions moved from substring to say.IsS, because the
habit gaps have variants now and a substring pins one of them. The
"по {day} у тебя обычно" variant was dropped on sight: the activities are
verbs, so it read "у тебя обычно тренируешься".

The persona scorer covers the family, and a new test asserts every gap
variant still says she has not seen enough rather than that he has nothing.

internal/phraser/eval/fallbacks_test.go

@@ -6,6 +6,7 @@ import (
 	"testing"
 
 	"github.com/kami/maven/internal/phraser"
+	"github.com/kami/maven/internal/say"
 )
 
 // TestFallbackPersona scores every line in every hand-written family on the
@@ -43,6 +44,11 @@ func TestFallbackPersona(t *testing.T) {
 		t.Fatalf("LoadActs: %v", err)
 	}
 	variants = append(variants, act.Variants()...)
+	sum, err := say.LoadSummaries(rand.NewSource(20260804))
+	if err != nil {
+		t.Fatalf("LoadSummaries: %v", err)
+	}
+	variants = append(variants, sum.Variants()...)
 	if len(variants) == 0 {
 		t.Fatal("no variants — the file loaded empty")
 	}
@@ -51,7 +57,8 @@ func TestFallbackPersona(t *testing.T) {
 		body := v
 		for _, ph := range []string{"{sources}", "{key}", "{value}", "{fn}", "{text}", "{when}", "{items}",
 			"{location}", "{temp}", "{condition}", "{tail}", "{out}", "{name}",
-			"{entity}", "{count}", "{word}"} {
+			"{entity}", "{count}", "{word}",
+			"{date}", "{line}", "{n}", "{day}", "{sat}", "{sun}", "{span}", "{gloss}", "{time}"} {
 			body = strings.ReplaceAll(body, ph, "вода")
 		}
 		for _, r := range RunChecks(Case{}, body, "neutral") {