say, persona, ttsnorm: the clock is spoken and the months have one copy (V-581)

A clock time read aloud now inflects its nouns and drops its leading zeros.
The old rewrite said "часов" for every hour and "минут" for every minute, so
21:00 came out as "21 часов" and 14:00 as "14 часов 00 минут". Russian
inflects a noun after a numeral and internal/say already owns that rule, so
spokenTime calls say.CountWord for both halves and omits the minutes when
there are none. 21:00 is "21 час", 22:02 is "22 часа 2 минуты", 14:00 is
"14 часов".

internal/persona held its own copies of the twelve months and the seven
weekdays. Both are closed classes and both already live in internal/lexicon,
which is where cmd/mavend/ruwords.go sent its copy. The block now reads
lexicon.Weekday and lexicon.MonthGenitive and carries no word list of its own.

LoadSummaries asserted that stall_sitting keeps its two counts and not the two
count words beside them. A variant dropping {word} or {dayword} would have
loaded and spoken a bare number. Both are required now.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

internal/say/summary.go

@@ -141,7 +141,8 @@ func LoadSummaries(src rand.Source) (*Summaries, error) {
 		{PlanUncertain, "{line}"},
 		{TasksFirst, "{items}"}, {TasksCandidates, "{items}"},
 		{StallOverdue, "{n}"}, {StallOverdue, "{word}"},
-		{StallSitting, "{n}"}, {StallSitting, "{days}"},
+		{StallSitting, "{n}"}, {StallSitting, "{word}"},
+		{StallSitting, "{days}"}, {StallSitting, "{dayword}"},
 		{StallUnconfirmed, "{n}"}, {StallUnconfirmed, "{word}"},
 		{ReasonOverdueDays, "{n}"}, {ReasonOverdueDays, "{word}"},
 		{ReasonInDays, "{n}"}, {ReasonInDays, "{word}"},