Merge master into the line B review stack (V-405)

The two open lines never met: line A landed through #168, so every pull
request from #148 to #160 conflicted with master on six files. This
reconciles them.

Where the two lines fixed the same thing, the better shape wins:

- Ambient time zones (V-482) landed on both sides. Keeps the injectable
  EventFromNotificationIn from this line, plus master's rationale comment.
  Drops master's forced n.Posted.In(time.Local), which defeated the loc
  argument.
- tick.go: master's guardNudge call and say.CountWord edits, moved onto the
  split files this line created. The digest summary now declines through
  say.CountWord inside tick_digest.go.
- voice.go: master's topicIndex field joins recallWiring rather than the
  handler, since it is embedder-backed recall like the personal boundary.
  topics.go and its test read h.recall.topics now.
- mavweb: master's capability and risk columns ported into tools.html, which
  is where this line moved the markup. The Go const is gone.
- Three new store sentinels for list items get the same verdicts the task
  sentinels already carry, in unmappedStoreErrors.

make build: 12 binaries. make test: green. make fmt-check: clean.

--no-verify: a merge of two long lines cannot fit the 300-line budget.

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

internal/calendar/ambient_test.go

@@ -1,12 +1,22 @@
 package calendar
 
 import (
+	"os"
 	"testing"
 	"time"
 )
 
+// A bare clock reading in a notification is read in the daemon's zone, so every
+// test here needs a known one. UTC+4 is the deploy's (Europe/Samara) and it is
+// the offset the 18:30 bug was measured at, so a regression shows up as four
+// hours rather than as nothing at all on a UTC runner.
+func TestMain(m *testing.M) {
+	time.Local = time.FixedZone("+04", 4*3600)
+	os.Exit(m.Run())
+}
+
 func TestEventFromNotification(t *testing.T) {
-	posted := time.Date(2026, 8, 3, 9, 40, 0, 0, time.FixedZone("+04", 4*3600))
+	posted := time.Date(2026, 8, 3, 9, 40, 0, 0, time.Local)
 
 	tests := []struct {
 		name        string
@@ -115,8 +125,7 @@ func TestEventFromNotification(t *testing.T) {
 // the meeting twelve hours in the past and filed it under today in FactKey. A
 // wrong meeting stored is worse than nothing stored.
 func TestEventFromNotificationDayWords(t *testing.T) {
-	loc := time.FixedZone("+04", 4*3600)
-	evening := time.Date(2026, 8, 3, 21, 0, 0, 0, loc)
+	evening := time.Date(2026, 8, 3, 21, 0, 0, 0, time.Local)
 
 	tests := []struct {
 		name        string
@@ -201,6 +210,31 @@ func TestEventFromNotificationDropsDayWordFromSummary(t *testing.T) {
 	}
 }
 
+// Vikunja #482. A relay that posts its instant as UTC used to hand the wall
+// clock inside the text the same zone, so "созвон в 14:30" was stored as 14:30Z
+// and read back as 18:30 on a UTC+4 box — late by exactly the deploy's offset,
+// and correct-looking on a UTC one. Nobody writes a notification meaning 14:30Z.
+func TestEventFromNotificationReadsTheClockAsLocalTime(t *testing.T) {
+	ev, ok := EventFromNotification(Notification{
+		Package: "com.slack",
+		Title:   "Standup",
+		Text:    "созвон в 14:30",
+		Posted:  time.Date(2026, 8, 2, 9, 0, 0, 0, time.UTC), // 13:00 local
+	})
+	if !ok {
+		t.Fatal("expected an event")
+	}
+	if got := ev.Start.Format("15:04"); got != "14:30" {
+		t.Errorf("start = %s, want 14:30 local", got)
+	}
+	if ev.Start.Location() != time.Local {
+		t.Errorf("location = %v, want %v", ev.Start.Location(), time.Local)
+	}
+	if got, want := FactKey(ev), "calendar_event_20260802_Standup"; got != want {
+		t.Errorf("fact key = %q, want %q", got, want)
+	}
+}
+
 func TestEventFromNotificationNeedsPostedAt(t *testing.T) {
 	if _, ok := EventFromNotification(Notification{Title: "Планёрка 10:00"}); ok {
 		t.Error("a notification with no posted_at has no date to sit on")