router: stage 0 claims the other days and the named event (V-471)

"какие планы на сегодня" worked and "какие планы на завтра" answered
"пока не умею": the agenda rule needs "у меня" or a calendar noun, and
that phrasing carries neither. "когда планёрка?" had the same shape.

Two rules. One takes a plan noun aimed at a named day, one takes a closed
list of event nouns after "когда"/"во сколько". Both route intent only,
so the query chain still decides which source answers.

classifier+onnx over the fixture: 55/79, 69.6% full, with the two new
cases passing and no case moving the other way.

internal/router/stage0.go

@@ -182,9 +182,38 @@ func AgendaQueryGrammars() []Grammar {
 			Pattern: regexp.MustCompile(`(?i)^\s*(что|чего|какие|сколько|во\s+сколько|когда)\s+у\s+меня(\s|[?!.]|$)`),
 			Build:   agendaQueryBuild,
 		},
+		{
+			// A plan noun aimed at a named day, with no possessive to anchor
+			// on: "какие планы на завтра", "что по делам в среду". The rule
+			// above wants "у меня" and this phrasing never has it, so
+			// "какие планы на завтра" answered "пока не умею" while "какие
+			// планы на сегодня" worked (Vikunja #471). The day word is what
+			// makes it an agenda question rather than a topic.
+			Name: "plan-day-query",
+			// Only "план" and "дел". A verb stem like "встреч" would take
+			// "встречаемся в среду", which is him telling her something, not
+			// asking.
+			Pattern: regexp.MustCompile(`(?i)(^|\s)(план|дел)[а-я]*\s+(на|в|во|по)\s+` + dayWordPattern + `(\s|[?!.]|$)`),
+			Build:   agendaQueryBuild,
+		},
+		{
+			// A named event with no calendar word at all: "когда планёрка?",
+			// "во сколько созвон". He is asking when something on his calendar
+			// happens, and the noun is the only signal. Closed list, so "когда
+			// битва при Ватерлоо" is still a world question.
+			Name:    "event-time-query",
+			Pattern: regexp.MustCompile(`(?i)^\s*(когда|во\s+сколько|в\s+котором\s+часу)\s+(будет\s+|у\s+нас\s+)?(планёрк|планерк|встреч|созвон|митинг|совещани|звонок|созвон|приём|прием|интервью|собеседовани|тренировк|урок|занятие|пара)[а-я]*(\s|[?!.]|$)`),
+			Build:   agendaQueryBuild,
+		},
 	}
 }
 
+// dayWordPattern — the day words an agenda question can name. Weekdays appear
+// in the accusative and prepositional forms the questions actually use ("в
+// среду", "на среде"), which is why the stems carry an inflection tail rather
+// than a fixed ending.
+const dayWordPattern = `(сегодня|завтра|послезавтра|выходн[а-я]+|недел[а-я]+|понедельник[а-я]*|вторник[а-я]*|сред[ауые][а-я]*|четверг[а-я]*|пятниц[ауые][а-я]*|суббот[ауые][а-я]*|воскресень[ея][а-я]*)`
+
 // agendaQueryBuild — shared Build for the agenda grammars. Confidence 1.0 on
 // the intent only: the utterance travels intact and the query chain's own
 // matchers decide the rest.