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>

cmd/mavend/feeds_test.go

@@ -79,7 +79,7 @@ func TestQueryFeedsByCategory(t *testing.T) {
 		t.Fatalf("reply = %q, want only the технологии item", reply)
 	}
 	reply, _ = askFeeds(t, h, "что нового по спорту?")
-	if !strings.Contains(reply, "ничего") {
+	if !phraser.IsQ(phraser.QueryFeedsTopic, nil, reply) {
 		t.Fatalf("reply = %q, want an honest empty answer for an unread category", reply)
 	}
 }
@@ -87,16 +87,22 @@ func TestQueryFeedsByCategory(t *testing.T) {
 // "не настроены" and "ничего нового" are different truths, and neither may be
 // answered by the model inventing a bulletin.
 func TestQueryFeedsOffAndEmptyDiffer(t *testing.T) {
+	// Against the entries, not against a substring: both of these have several
+	// wordings, so "ничего нового" passed only on the turns the picker happened
+	// to choose the first one.
 	off := buildFeedHandler(t, false)
 	reply, ok := askFeeds(t, off, "что нового в лентах?")
-	if !ok || !strings.Contains(reply, "не настроены") {
+	if !ok || !phraser.IsQ(phraser.QueryFeedsOff, nil, reply) {
 		t.Fatalf("feeds off: reply = %q, ok = %v", reply, ok)
 	}
 	on := buildFeedHandler(t, true)
 	reply, ok = askFeeds(t, on, "что нового в лентах?")
-	if !ok || !strings.Contains(reply, "ничего нового") {
+	if !ok || !phraser.IsQ(phraser.QueryFeedsEmpty, nil, reply) {
 		t.Fatalf("feeds on but empty: reply = %q, ok = %v", reply, ok)
 	}
+	if phraser.IsQ(phraser.QueryFeedsOff, nil, reply) {
+		t.Fatalf("an empty feed answered as an unconfigured one: %q", reply)
+	}
 }
 
 func TestQueryFeedsPassesOnANonFeedQuestion(t *testing.T) {
@@ -194,3 +200,22 @@ func TestFeedWorkerFetcherIsAllowlisted(t *testing.T) {
 		t.Fatal("the poller fetched a private address")
 	}
 }
+
+// TestQueryFeedsPassesWhenTheWorldCanAnswer — the defect (Vikunja #474). The
+// deployed box has no feeds block and does have SearXNG, and "что происходит
+// сейчас в новостях про искусственный интеллект?" got a configuration status
+// instead of the live answer sitting one source below.
+func TestQueryFeedsPassesWhenTheWorldCanAnswer(t *testing.T) {
+	h := buildFeedHandler(t, false)
+	h.search = &searchWiring{max: 3, runes: 1500}
+
+	if reply, ok := askFeeds(t, h, "что нового в лентах?"); ok {
+		t.Fatalf("feeds off with a search configured must fall through, got %q", reply)
+	}
+	// With nothing below that reads the world, the honest status is still said:
+	// general knowledge would otherwise answer with an invented bulletin.
+	h.search = nil
+	if reply, ok := askFeeds(t, h, "что нового в лентах?"); !ok || !strings.Contains(reply, "не настроены") {
+		t.Fatalf("no search and no ZIMs: reply = %q, ok = %v", reply, ok)
+	}
+}