weather: any city he names, not the six in a table (V-421)

The hand-written table understood "какая погода в X" for six values of X.
Ask about Kazan or Tbilisi and the city was dropped silently and answered for
the default location — a correct-sounding answer about the wrong place.

The table is gone. internal/weather already calls Open-Meteo's geocoding
endpoint on every lookup, so the place he named goes straight there and any
place it knows is a place he can ask about. He speaks the prepositional case,
so locationCandidates reverses the two endings that cover most of it: a final
"е" is a nominative "а" or nothing, a final "и" is a soft sign. A wrong
candidate finds no city; it never invents one.

A place the geocoder does not have now reads as "не знаю такого города"
rather than as a provider outage or, worse, as the default city's weather.
ErrLocationUnknown is what carries that apart.

"в" followed by a room or a day word is still the default location. Those
questions are answered by the house sensors and the calendar, not by
Open-Meteo, and they must not be read as a city.

cmd/mavend/actions_query.go

@@ -390,6 +390,11 @@ func (h *reactiveHandler) queryWeather(ctx context.Context, t *queryTurn) (strin
 	if errors.Is(err, weather.ErrNotConfigured) {
 		return "погода не настроена.", true
 	}
+	if errors.Is(err, weather.ErrLocationUnknown) {
+		// He named a place and the geocoder does not have it. Saying so beats
+		// reading out the default city's temperature (Vikunja #421).
+		return "не знаю такого города — " + loc + ".", true
+	}
 	if err != nil {
 		log.Printf("voice: weather: %v", err)
 		return "не получилось узнать погоду.", true

cmd/mavend/weatherq.go

@@ -1,10 +1,13 @@
 // Package main — weatherq.go holds the weather-query keyword helpers: does
-// this utterance ask about weather at all, and which city (if any) did it
-// name. Both are plain substring/lookup matching, not NLU — extend this file
-// rather than voice.go for anything in that shape.
+// this utterance ask about weather at all, and which place (if any) did he
+// name. Both are plain keyword matching, not NLU — extend this file rather
+// than voice.go for anything in that shape.
 package main
 
-import "strings"
+import (
+	"regexp"
+	"strings"
+)
 
 // isWeatherQuery returns true if the utterance is about weather.
 func isWeatherQuery(u string) bool {
@@ -19,40 +22,49 @@ func isWeatherQuery(u string) bool {
 		strings.Contains(lower, "temperature")
 }
 
-// weatherCities — the city names an utterance may name explicitly, as
-// lowercase substrings mapped to the provider's spelling. This is a
-// convenience for "какая погода в Лондоне", NOT a source of default truth:
-// nothing here is used unless he actually said it.
-var weatherCities = map[string]string{
-	"москв":    "Moscow",
-	"moscow":   "Moscow",
-	"питер":    "Saint Petersburg",
-	"spb":      "Saint Petersburg",
-	"петербур": "Saint Petersburg",
-	"лондон":   "London",
-	"london":   "London",
-	"париж":    "Paris",
-	"paris":    "Paris",
-	"берлин":   "Berlin",
-	"berlin":   "Berlin",
-	"нью-йорк": "New York",
-	"new york": "New York",
+// weatherPlace — the place he named, after "в"/"во"/"in". One or two words,
+// letters and dashes only, so "в Нижнем Новгороде" and "in New York" both
+// come through whole and "в 5 утра" does not.
+var weatherPlace = regexp.MustCompile(`(?i)(?:^|\s)(?:в|во|in)\s+([\p{L}-]+(?:\s+[\p{L}-]+)?)`)
+
+// weatherNonPlaces — words that follow "в" in a weather question and are not
+// cities. "какая погода в доме" is the smart-home sensor, not Open-Meteo, and
+// "тепло в комнате" is the same question about the same room.
+var weatherNonPlaces = map[string]bool{
+	"доме": true, "квартире": true, "комнате": true, "спальне": true,
+	"гостиной": true, "кухне": true, "гараже": true, "офисе": true,
+	"выходные": true, "субботу": true, "воскресенье": true, "понедельник": true,
+	"вторник": true, "среду": true, "четверг": true, "пятницу": true,
+	"обед": true, "обеде": true, "утро": true, "утром": true, "вечер": true,
+	"вечером": true, "ночь": true, "ночью": true, "целом": true, "принципе": true,
 }
 
-// extractWeatherLocation returns the city he named, or the configured default
+// extractWeatherLocation returns the place he named, or the configured default
 // when he named none. It returns "" when he named none AND no default is
 // configured — the caller must then say it does not know.
 //
-// It used to return "Moscow" in that case. That is a made-up answer presented
-// as fact: reading out Moscow's temperature to someone who is not in Moscow is
-// wrong in exactly the way maven must never be wrong. voice.weather
-// .default_location is the only source of an unstated location.
+// It used to be a hand-written table of six cities in two spellings each
+// (Vikunja #421). Anything outside it — Kazan, Tbilisi — was dropped silently
+// and answered for the default location, which reads as a correct answer about
+// the wrong place. There is a geocoder behind this now: internal/weather
+// already calls Open-Meteo's geocoding endpoint for every lookup, so any place
+// it knows is a place he can ask about, and the table bought nothing.
+//
+// A named place that the geocoder cannot resolve is the caller's problem to
+// report, not this function's to hide.
+//
+// It used to return "Moscow" when he named nothing. That is a made-up answer
+// presented as fact. voice.weather.default_location is the only source of an
+// unstated location.
 func extractWeatherLocation(u, defaultLoc string) string {
-	lower := strings.ToLower(u)
-	for substr, name := range weatherCities {
-		if strings.Contains(lower, substr) {
-			return name
-		}
+	m := weatherPlace.FindStringSubmatch(u)
+	if m == nil {
+		return defaultLoc
 	}
-	return defaultLoc
+	place := strings.TrimSpace(m[1])
+	first := strings.ToLower(strings.Fields(place)[0])
+	if weatherNonPlaces[first] {
+		return defaultLoc
+	}
+	return place
 }

cmd/mavend/weatherq_test.go

@@ -0,0 +1,33 @@
+package main
+
+import "testing"
+
+// TestExtractWeatherLocation — any place he names comes through, not just the
+// six that used to be in a table (Vikunja #421).
+func TestExtractWeatherLocation(t *testing.T) {
+	cases := []struct {
+		utterance string
+		def       string
+		want      string
+	}{
+		// The cities the table had, and the ones it silently dropped.
+		{"какая погода в Москве", "Berlin", "Москве"},
+		{"какая погода в Казани", "Berlin", "Казани"},
+		{"погода в Тбилиси?", "Berlin", "Тбилиси"},
+		{"what's the weather in New York", "Berlin", "New York"},
+		{"тепло в Нижнем Новгороде?", "Berlin", "Нижнем Новгороде"},
+		// He named nothing: the configured default, and nothing at all when
+		// there is no default.
+		{"какая сегодня погода", "Berlin", "Berlin"},
+		{"какая сегодня погода", "", ""},
+		// "в" followed by something that is not a place stays the default —
+		// the house sensors and the day words answer elsewhere.
+		{"тепло в комнате?", "Berlin", "Berlin"},
+		{"какая погода в выходные", "Berlin", "Berlin"},
+	}
+	for _, c := range cases {
+		if got := extractWeatherLocation(c.utterance, c.def); got != c.want {
+			t.Errorf("extractWeatherLocation(%q, %q) = %q, want %q", c.utterance, c.def, got, c.want)
+		}
+	}
+}

cmd/mavweb/handlers_test.go

@@ -54,7 +54,9 @@ type fakeCore struct {
 	revertErr   error
 
 	// for handleNotifications tests
-	nudgesErr error
+	nudgesErr     error
+	attempts      []ipc.DeliveryAttempt
+	attemptStatus string
 
 	// for handleHistory tests
 	historyFacts []ipc.Fact
@@ -1251,3 +1253,35 @@ func TestHandleWS_AssertedSession_PassesGate(t *testing.T) {
 		t.Fatalf("status = 403 on an asserted session; body=%s", rr.Body.String())
 	}
 }
+
+func (f *fakeCore) DeliveryAttempts(_ context.Context, status string, _ int) ([]ipc.DeliveryAttempt, error) {
+	f.attemptStatus = status
+	return f.attempts, nil
+}
+
+// TestHandleNotifications_ShowsTheOutbox — the outbox was written and never
+// read, so a dropped or failed send was invisible (Vikunja #390).
+func TestHandleNotifications_ShowsTheOutbox(t *testing.T) {
+	done := time.Date(2026, 8, 4, 9, 0, 30, 0, time.UTC)
+	core := &fakeCore{
+		attempts: []ipc.DeliveryAttempt{
+			{Kind: "nudge", Rule: "care-check", Channel: "telegram", Status: "dropped",
+				Created: done.Add(-30 * time.Second), Completed: &done},
+			{Kind: "reminder", ReminderID: 7, Channel: "voice", Status: "pending", Created: done},
+		},
+	}
+	rr := httptest.NewRecorder()
+	handleNotifications(rr, httptest.NewRequest(http.MethodGet, "/notifications?status=dropped", nil), core)
+	if rr.Code != http.StatusOK {
+		t.Fatalf("status = %d, want 200; body=%s", rr.Code, rr.Body.String())
+	}
+	if core.attemptStatus != "dropped" {
+		t.Errorf("status filter = %q, want it passed through", core.attemptStatus)
+	}
+	body := rr.Body.String()
+	for _, want := range []string{"care-check", "dropped", "reminder #7", "Delivery outbox"} {
+		if !strings.Contains(body, want) {
+			t.Errorf("rendered outbox missing %q", want)
+		}
+	}
+}

cmd/mavweb/main.go

@@ -893,12 +893,59 @@ func handleNotifications(w http.ResponseWriter, r *http.Request, core ipc.CoreAP
 		http.Error(w, "notifications error: "+err.Error(), http.StatusBadGateway)
 		return
 	}
+	// The outbox, on the page that already answers "what did she send".
+	// A failed or dropped attempt is why she went quiet, and until now it was
+	// recorded and unreadable (Vikunja #390). Filter with ?status=dropped.
+	status := r.URL.Query().Get("status")
+	attempts, err := core.DeliveryAttempts(ctx, status, 50)
+	if err != nil {
+		// The nudge list is still worth showing, so this is a note on the page
+		// rather than a dead page.
+		log.Printf("notifications: delivery attempts: %v", err)
+	}
 	w.Header().Set("Content-Type", "text/html; charset=utf-8")
-	if err := notificationsTmpl.Execute(w, map[string]any{"Nudges": nudges}); err != nil {
+	if err := notificationsTmpl.Execute(w, map[string]any{
+		"Nudges":   nudges,
+		"Attempts": deliveryRows(attempts),
+		"Status":   status,
+	}); err != nil {
 		log.Printf("notifications template: %v", err)
 	}
 }
 
+// deliveryRow is one outbox line, with every timestamp already formatted so
+// the template holds no date logic — same shape as taskRow.
+type deliveryRow struct {
+	Kind      string
+	Target    string
+	Channel   string
+	Status    string
+	Created   string
+	Completed string
+}
+
+func deliveryRows(as []ipc.DeliveryAttempt) []deliveryRow {
+	out := make([]deliveryRow, 0, len(as))
+	for _, a := range as {
+		target := a.Rule
+		if target == "" && a.ReminderID != 0 {
+			target = "reminder #" + strconv.FormatInt(a.ReminderID, 10)
+		}
+		row := deliveryRow{
+			Kind:    a.Kind,
+			Target:  target,
+			Channel: a.Channel,
+			Status:  a.Status,
+			Created: a.Created.Format("02.01 15:04"),
+		}
+		if a.Completed != nil {
+			row.Completed = a.Completed.Format("15:04")
+		}
+		out = append(out, row)
+	}
+	return out
+}
+
 func handleReminders(w http.ResponseWriter, r *http.Request, core ipc.CoreAPI) {
 	if core == nil {
 		http.Error(w, "reminders disabled (no -core)", http.StatusServiceUnavailable)

cmd/mavweb/notifications.html

@@ -14,5 +14,27 @@
   <div>no notifications yet</div>
   <div class=hint>check back later or ask maven a question</div>
 </div>{{end}}
+<h2>Delivery outbox</h2>
+<p class=hint>
+  every send is recorded before it leaves, so a failure is visible rather than silent.
+  <a href="/notifications">all</a> ·
+  <a href="/notifications?status=dropped">dropped</a> ·
+  <a href="/notifications?status=failed">failed</a> ·
+  <a href="/notifications?status=pending">pending</a> ·
+  <a href="/notifications?status=unknown">unknown</a>
+</p>
+{{if .Attempts}}<div class=scroll><table>
+<tr><th>started</th><th>kind</th><th>rule</th><th>channel</th><th>status</th><th>finished</th></tr>
+{{range .Attempts}}<tr>
+<td class=hint>{{.Created}}</td>
+<td>{{.Kind}}</td>
+<td class=key>{{.Target}}</td>
+<td><span class=badge>{{.Channel}}</span></td>
+<td class={{.Status}}>{{.Status}}</td>
+<td class=hint>{{.Completed}}</td>
+</tr>{{end}}</table></div>
+{{else}}<div class=empty>
+  <div>no delivery attempts{{if .Status}} with status {{.Status}}{{end}}</div>
+</div>{{end}}
 {{template "shellBottom"}}
 </html>

internal/ipc/api.go

@@ -60,6 +60,19 @@ type Nudge struct {
 	OutcomeTs *int64    `json:"outcome_ts,omitempty"`
 }
 
+// DeliveryAttempt — one row of the delivery outbox. Times are formatted by the
+// reader; Completed is nil while the attempt is still pending.
+type DeliveryAttempt struct {
+	ID         int64      `json:"id"`
+	Kind       string     `json:"kind"`
+	Rule       string     `json:"rule,omitempty"`
+	ReminderID int64      `json:"reminder_id,omitempty"`
+	Channel    string     `json:"channel"`
+	Status     string     `json:"status"`
+	Created    time.Time  `json:"created"`
+	Completed  *time.Time `json:"completed,omitempty"`
+}
+
 // Note — a recall/preference item; ranked by embedding cosine on query.
 // Score is set by QueryNotes (0 on the write path).
 type Note struct {
@@ -521,6 +534,12 @@ type outcomesReq struct {
 type nReq struct {
 	N int `json:"n"`
 }
+
+// deliveryAttemptsReq — the outbox read. Status is empty for every status.
+type deliveryAttemptsReq struct {
+	Status string `json:"status,omitempty"`
+	N      int    `json:"n"`
+}
 type kindNReq struct {
 	Kind string `json:"kind"`
 	N    int    `json:"n"`
@@ -685,6 +704,9 @@ type CoreAPI interface {
 	RecentActiveFactsByKind(ctx context.Context, kind string, n int) ([]Fact, error)
 	CalendarEvents(ctx context.Context, from, to time.Time) ([]Fact, error)
 	RecentNudges(ctx context.Context, n int) ([]Nudge, error)
+	// DeliveryAttempts reads the outbox, newest first. An empty status means
+	// every status (Vikunja #390).
+	DeliveryAttempts(ctx context.Context, status string, n int) ([]DeliveryAttempt, error)
 
 	// RecentEcosystemTraces reads the ecosystem call log, which lives in its
 	// own table so machine-rate traces never crowd out human-rate facts.

internal/ipc/client.go

@@ -68,6 +68,7 @@ var readOnlyMethods = map[Method]bool{
 	MethodRecentActiveFacts:     true,
 	MethodCalendarEvents:        true,
 	MethodRecentNudges:          true,
+	MethodDeliveryAttempts:      true,
 	MethodRecentEcoTraces:       true,
 	MethodQueryNotes:            true,
 	MethodRecentNotes:           true,
@@ -373,6 +374,14 @@ func (c *Client) RecentEcosystemTraces(ctx context.Context, n int) ([]EcosystemT
 	return out, nil
 }
 
+func (c *Client) DeliveryAttempts(ctx context.Context, status string, n int) ([]DeliveryAttempt, error) {
+	var out []DeliveryAttempt
+	if err := c.call(ctx, MethodDeliveryAttempts, deliveryAttemptsReq{Status: status, N: n}, &out); err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *Client) RecentNudges(ctx context.Context, n int) ([]Nudge, error) {
 	var out []Nudge
 	if err := c.call(ctx, MethodRecentNudges, nReq{N: n}, &out); err != nil {

internal/ipc/server.go

@@ -173,6 +173,25 @@ func (a *storeAPI) RecentNudges(ctx context.Context, n int) ([]Nudge, error) {
 	return out, nil
 }
 
+func (a *storeAPI) DeliveryAttempts(ctx context.Context, status string, n int) ([]DeliveryAttempt, error) {
+	as, err := a.s.ListDeliveryAttempts(ctx, status, n)
+	if err != nil {
+		return nil, mapErr(err)
+	}
+	out := make([]DeliveryAttempt, len(as))
+	for i, at := range as {
+		out[i] = DeliveryAttempt{
+			ID: at.ID, Kind: at.Kind, Rule: at.Rule, ReminderID: at.ReminderID,
+			Channel: at.Channel, Status: at.Status, Created: at.Created,
+		}
+		if at.HasComplete {
+			t := at.Completed
+			out[i].Completed = &t
+		}
+	}
+	return out, nil
+}
+
 func (a *storeAPI) WriteNote(ctx context.Context, ts time.Time, text string, embedding []float32, source string) (int64, error) {
 	id, err := a.s.WriteNote(ctx, ts, text, embedding, source)
 	return id, mapErr(err)
@@ -863,6 +882,16 @@ var methodTable = map[Method]handlerFunc{
 		}
 		return out, nil
 	}),
+	MethodDeliveryAttempts: withParams(func(ctx context.Context, api CoreAPI, p deliveryAttemptsReq) ([]DeliveryAttempt, error) {
+		out, err := api.DeliveryAttempts(ctx, p.Status, p.N)
+		if err != nil {
+			return nil, err
+		}
+		if out == nil {
+			out = []DeliveryAttempt{}
+		}
+		return out, nil
+	}),
 	MethodRecentNudges: withParams(func(ctx context.Context, api CoreAPI, p nReq) ([]Nudge, error) {
 		out, err := api.RecentNudges(ctx, p.N)
 		if err != nil {

internal/ipc/unimplemented.go

@@ -68,6 +68,9 @@ func (UnimplementedCoreAPI) RecentActiveFactsByKind(ctx context.Context, kind st
 func (UnimplementedCoreAPI) CalendarEvents(ctx context.Context, from, to time.Time) ([]Fact, error) {
 	return nil, ErrNotImplemented
 }
+func (UnimplementedCoreAPI) DeliveryAttempts(ctx context.Context, status string, n int) ([]DeliveryAttempt, error) {
+	return nil, ErrNotImplemented
+}
 func (UnimplementedCoreAPI) RecentNudges(ctx context.Context, n int) ([]Nudge, error) {
 	return nil, ErrNotImplemented
 }

internal/ipc/wire.go

@@ -28,6 +28,7 @@ const (
 	MethodRecentActiveFacts      Method = "recent_active_facts_by_kind"
 	MethodCalendarEvents         Method = "calendar_events"
 	MethodRecentNudges           Method = "recent_nudges"
+	MethodDeliveryAttempts       Method = "delivery_attempts"
 	MethodRecentEcoTraces        Method = "recent_ecosystem_traces"
 	MethodWriteNote              Method = "write_note"
 	MethodQueryNotes             Method = "query_notes"

internal/store/delivery.go

@@ -87,3 +87,68 @@ func (s *Store) ReconcileStaleDeliveryAttempts(ctx context.Context, now time.Tim
 	}
 	return int(n), nil
 }
+
+// DeliveryAttempt — one row of the outbox, as a reader sees it.
+type DeliveryAttempt struct {
+	ID          int64
+	Kind        string // nudge|reminder
+	Rule        string // set for nudges
+	ReminderID  int64  // set for reminders
+	Channel     string
+	Status      string // one of the Delivery* constants
+	Created     time.Time
+	Completed   time.Time // zero while pending
+	HasComplete bool
+}
+
+// ListDeliveryAttempts returns recent attempts, newest first. An empty status
+// means every status; anything else filters on it.
+//
+// The table was write-only until 04-08-2026: rows were recorded and nothing
+// could read them, so the tests for #368 and #370 had to reach past the store
+// into store.DB, which is the tell (Vikunja #390). A durable record nobody can
+// read answers no question, and "why did Maven go quiet" is supposed to be a
+// query rather than a mystery.
+//
+// Status is the filter that earns its place, because the two questions actually
+// asked are "what got dropped" and "what is still pending". Neither is
+// answerable by reading the whole list on a busy day.
+func (s *Store) ListDeliveryAttempts(ctx context.Context, status string, limit int) ([]DeliveryAttempt, error) {
+	if limit <= 0 {
+		limit = 50
+	}
+	q := `SELECT id, kind, rule, reminder_id, channel, status, created_ts, completed_ts
+	        FROM delivery_attempts`
+	args := []any{}
+	if status != "" {
+		q += ` WHERE status = ?`
+		args = append(args, status)
+	}
+	q += ` ORDER BY created_ts DESC, id DESC LIMIT ?`
+	args = append(args, limit)
+
+	rows, err := s.db.QueryContext(ctx, q, args...)
+	if err != nil {
+		return nil, fmt.Errorf("list delivery attempts: %w", err)
+	}
+	defer rows.Close()
+
+	var out []DeliveryAttempt
+	for rows.Next() {
+		var a DeliveryAttempt
+		var created int64
+		var completed *int64
+		if err := rows.Scan(&a.ID, &a.Kind, &a.Rule, &a.ReminderID, &a.Channel, &a.Status, &created, &completed); err != nil {
+			return nil, fmt.Errorf("list delivery attempts: scan: %w", err)
+		}
+		a.Created = time.UnixMilli(created)
+		if completed != nil {
+			a.Completed, a.HasComplete = time.UnixMilli(*completed), true
+		}
+		out = append(out, a)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("list delivery attempts: %w", err)
+	}
+	return out, nil
+}

internal/store/delivery_test.go

@@ -32,3 +32,53 @@ func TestDroppedDeliveryAttemptRoundTrips(t *testing.T) {
 		t.Fatalf("status: want %q, got %q", DeliveryDropped, status)
 	}
 }
+
+// TestListDeliveryAttempts — the read path the outbox lacked until #390. The
+// two questions it must answer are "what was dropped" and "what is pending".
+func TestListDeliveryAttempts(t *testing.T) {
+	ctx := context.Background()
+	s := newTestStore(t)
+	base := time.Date(2026, 8, 4, 9, 0, 0, 0, time.UTC)
+
+	sent, err := s.BeginDeliveryAttempt(ctx, "nudge", "water", 0, "telegram", "h1", base)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := s.CompleteDeliveryAttempt(ctx, sent, DeliverySent, base.Add(time.Second)); err != nil {
+		t.Fatal(err)
+	}
+	dropped, err := s.BeginDeliveryAttempt(ctx, "nudge", "care", 0, "telegram", "h2", base.Add(time.Minute))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := s.CompleteDeliveryAttempt(ctx, dropped, DeliveryDropped, base.Add(time.Minute)); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := s.BeginDeliveryAttempt(ctx, "reminder", "", 7, "voice", "h3", base.Add(2*time.Minute)); err != nil {
+		t.Fatal(err)
+	}
+
+	all, err := s.ListDeliveryAttempts(ctx, "", 10)
+	if err != nil || len(all) != 3 {
+		t.Fatalf("ListDeliveryAttempts = %d rows, err=%v, want 3", len(all), err)
+	}
+	// Newest first.
+	if all[0].Kind != "reminder" || all[0].ReminderID != 7 {
+		t.Fatalf("newest row is %+v, want the reminder", all[0])
+	}
+	if all[0].HasComplete {
+		t.Fatalf("a pending row must have no completion time: %+v", all[0])
+	}
+	if !all[2].HasComplete || !all[2].Completed.Equal(base.Add(time.Second)) {
+		t.Fatalf("completed row lost its time: %+v", all[2])
+	}
+
+	only, err := s.ListDeliveryAttempts(ctx, DeliveryDropped, 10)
+	if err != nil || len(only) != 1 || only[0].Rule != "care" {
+		t.Fatalf("dropped filter = %+v, err=%v", only, err)
+	}
+	pending, err := s.ListDeliveryAttempts(ctx, DeliveryPending, 10)
+	if err != nil || len(pending) != 1 || pending[0].Kind != "reminder" {
+		t.Fatalf("pending filter = %+v, err=%v", pending, err)
+	}
+}

internal/weather/openmeteo.go

@@ -97,7 +97,59 @@ func (p *OpenMeteoProvider) CurrentWeather(ctx context.Context, location string)
 	}, nil
 }
 
+// locationCandidates — the spellings to try for a place taken out of a spoken
+// sentence, in order. He says "какая погода в Казани", so the word arrives in
+// the prepositional case and the geocoder wants the nominative (Vikunja #421).
+//
+// Two cheap reversals cover most of what he says: a final "е" is usually a
+// nominative "а" (Москве → Москва) or nothing at all (Лондоне → Лондон), and a
+// final "и" is usually a soft sign (Казани → Казань). Indeclinable names —
+// Тбилиси, Сочи, Осло — are already nominative and the first candidate answers.
+//
+// Nothing here is a guess about the weather: a wrong candidate finds no city
+// and the caller says so. It only decides which strings are worth asking about.
+func locationCandidates(location string) []string {
+	out := []string{location}
+	add := func(s string) {
+		if s == "" || s == location {
+			return
+		}
+		for _, seen := range out {
+			if seen == s {
+				return
+			}
+		}
+		out = append(out, s)
+	}
+	r := []rune(location)
+	if len(r) < 4 {
+		return out
+	}
+	stem := string(r[:len(r)-1])
+	switch r[len(r)-1] {
+	case 'е', 'Е':
+		add(stem + "а")
+		add(stem)
+	case 'и', 'И':
+		add(stem + "ь")
+		add(stem)
+	case 'у', 'У', 'ю', 'Ю':
+		add(stem + "а")
+	}
+	return out
+}
+
 func (p *OpenMeteoProvider) geocode(ctx context.Context, location string) (lat, lon float64, name string, err error) {
+	for _, cand := range locationCandidates(location) {
+		lat, lon, name, err = p.geocodeOne(ctx, cand)
+		if err == nil {
+			return lat, lon, name, nil
+		}
+	}
+	return 0, 0, "", err
+}
+
+func (p *OpenMeteoProvider) geocodeOne(ctx context.Context, location string) (lat, lon float64, name string, err error) {
 	u := fmt.Sprintf("https://geocoding-api.open-meteo.com/v1/search?name=%s&count=1&language=ru&format=json", url.QueryEscape(location))
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, u, nil)
 	if err != nil {
@@ -121,7 +173,7 @@ func (p *OpenMeteoProvider) geocode(ctx context.Context, location string) (lat,
 	}
 
 	if len(geo.Results) == 0 {
-		return 0, 0, "", fmt.Errorf("location %q not found", location)
+		return 0, 0, "", fmt.Errorf("%w: %q", ErrLocationUnknown, location)
 	}
 
 	r := geo.Results[0]

internal/weather/openmeteo_test.go

@@ -83,3 +83,29 @@ func TestStubProvider(t *testing.T) {
 		t.Fatalf("StubProvider: want ErrNotConfigured, got %v", err)
 	}
 }
+
+// TestLocationCandidates — he speaks the prepositional case and the geocoder
+// wants the nominative (Vikunja #421).
+func TestLocationCandidates(t *testing.T) {
+	cases := map[string][]string{
+		"Москве":  {"Москве", "Москва", "Москв"},
+		"Казани":  {"Казани", "Казань", "Казан"},
+		"Лондоне": {"Лондоне", "Лондона", "Лондон"},
+		"Тбилиси": {"Тбилиси", "Тбились", "Тбилис"},
+		"Berlin":  {"Berlin"},
+		"Уфе":     {"Уфе"}, // too short to strip — asked as spoken
+	}
+	for in, want := range cases {
+		got := locationCandidates(in)
+		if len(got) != len(want) {
+			t.Errorf("locationCandidates(%q) = %v, want %v", in, got, want)
+			continue
+		}
+		for i := range got {
+			if got[i] != want[i] {
+				t.Errorf("locationCandidates(%q) = %v, want %v", in, got, want)
+				break
+			}
+		}
+	}
+}

internal/weather/weather.go

@@ -7,6 +7,13 @@ import (
 
 var ErrNotConfigured = errors.New("weather: not configured")
 
+// ErrLocationUnknown — the geocoder has no such place. A named city that does
+// not resolve must read differently from a provider outage: one is "I do not
+// know that place", the other is "I could not reach the service", and
+// answering for the default location instead is the defect this replaces
+// (Vikunja #421).
+var ErrLocationUnknown = errors.New("weather: location not found")
+
 type Weather struct {
 	Location    string  `json:"location"`
 	Temperature float64 `json:"temperature"`