clarify: a parked question belongs to the conversation that was asked (V-466)

The clarify store had one key for the whole daemon, so a question asked in
the web chat and never answered captured the next three utterances from any
source — telegram, or the mic — and answered them against a request the
speaker never made.

The reach now supplies a conversation id on the IPC Chat call, and the
daemon carries it on the context the way it already carries the correlation
id, so the six clarify call sites read it instead of a constant. The mic has
no id of its own and keeps the key it had, so voice behaves exactly as
before. mavweb has no per-browser session, so every tab is one conversation:
right for a single-owner box, and still distinct from telegram and the mic.

Dialogue sessions stay global on purpose — they are what she remembers about
him, not what she is waiting for from one channel.

cmd/mavend/clarify.go

@@ -106,11 +106,11 @@ func trimClarifyExpired(s string) string {
 // out, and "" when nothing was parked. Call it right after
 // resolveClarifyAnswer: a live question is answered there, an expired one is
 // only reported here — the words themselves still go on to be routed fresh.
-func (h *reactiveHandler) clarifyExpiredNotice() string {
+func (h *reactiveHandler) clarifyExpiredNotice(ctx context.Context) string {
 	if h.clarifyStore == nil {
 		return ""
 	}
-	if !h.clarifyStore.TakeExpired(voiceDialogueID, h.now()) {
+	if !h.clarifyStore.TakeExpired(dialogueIDOf(ctx), h.now()) {
 		return ""
 	}
 	log.Printf("voice: clarify — parked question expired, telling him and routing the words fresh")
@@ -157,7 +157,7 @@ func clarifyQuestion(dec router.Decision) (dialogue.Slot, string, bool) {
 // askClarify parks the request and returns the question to ask instead of the
 // canned "не поняла". Returns ("", false) when there is nothing to ask about, so
 // the caller falls back to the canned reply.
-func (h *reactiveHandler) askClarify(dec router.Decision) (string, bool) {
+func (h *reactiveHandler) askClarify(ctx context.Context, dec router.Decision) (string, bool) {
 	if h.clarifyStore == nil {
 		return "", false
 	}
@@ -165,7 +165,7 @@ func (h *reactiveHandler) askClarify(dec router.Decision) (string, bool) {
 	if !ok {
 		return "", false
 	}
-	h.clarifyStore.Put(voiceDialogueID, &dialogue.PendingQuestion{
+	h.clarifyStore.Put(dialogueIDOf(ctx), &dialogue.PendingQuestion{
 		Intent:      dialogue.Intent(dec.Intent),
 		Slots:       toDialogueSlots(dec.Slots),
 		Missing:     []dialogue.Slot{slot},
@@ -192,7 +192,7 @@ func (h *reactiveHandler) resolveClarifyAnswer(ctx context.Context, text string)
 	if h.clarifyStore == nil {
 		return "", false
 	}
-	q := h.clarifyStore.Get(voiceDialogueID, h.now())
+	q := h.clarifyStore.Get(dialogueIDOf(ctx), h.now())
 	if q == nil {
 		return "", false
 	}
@@ -206,9 +206,9 @@ func (h *reactiveHandler) resolveClarifyAnswer(ctx context.Context, text string)
 	// would fire at 11:00 saying "напомни" and nothing else.
 	q.Utterance = foldAnswerIntoUtterance(q.Utterance, merged.Text)
 	if len(dialogue.StillMissing(q.Missing, merged)) > 0 {
-		return h.reaskOrGiveUp(q, merged, text), true
+		return h.reaskOrGiveUp(ctx, q, merged, text), true
 	}
-	h.clarifyStore.Delete(voiceDialogueID)
+	h.clarifyStore.Delete(dialogueIDOf(ctx))
 
 	// One gap filled is not the same as a complete request. askClarify parks
 	// only the first gap, because one question per turn is the rule, but a
@@ -217,7 +217,7 @@ func (h *reactiveHandler) resolveClarifyAnswer(ctx context.Context, text string)
 	// a reminder with no time, which answered "не получилось разобрать время
 	// напоминания." — an error for a request she never finished asking about.
 	// Re-enter the loop instead, one question at a time as before.
-	if reply, asked := h.askRemainingGap(q, intent, merged); asked {
+	if reply, asked := h.askRemainingGap(ctx, q, intent, merged); asked {
 		return reply, true
 	}
 
@@ -261,7 +261,7 @@ func foldAnswerIntoUtterance(utterance, subject string) string {
 // The attempt budget is shared with the re-ask path on purpose. A second gap
 // costs a question exactly like a second try at the first one does, so the cap
 // still bounds how many times she can speak before acting or letting go.
-func (h *reactiveHandler) askRemainingGap(q *dialogue.PendingQuestion, intent router.Intent, merged dialogue.Slots) (string, bool) {
+func (h *reactiveHandler) askRemainingGap(ctx context.Context, q *dialogue.PendingQuestion, intent router.Intent, merged dialogue.Slots) (string, bool) {
 	remaining := dialogue.StillMissing(wantedSlots[intent], merged)
 	if len(remaining) == 0 {
 		return "", false
@@ -270,7 +270,7 @@ func (h *reactiveHandler) askRemainingGap(q *dialogue.PendingQuestion, intent ro
 	if !ok || !q.CanAsk() {
 		return "", false
 	}
-	h.clarifyStore.Put(voiceDialogueID, &dialogue.PendingQuestion{
+	h.clarifyStore.Put(dialogueIDOf(ctx), &dialogue.PendingQuestion{
 		Intent:      q.Intent,
 		Slots:       merged,
 		Missing:     []dialogue.Slot{remaining[0]},
@@ -287,13 +287,13 @@ func (h *reactiveHandler) askRemainingGap(q *dialogue.PendingQuestion, intent ro
 // reaskOrGiveUp handles an answer that left the gap open: ask the same question
 // again while she has attempts left, otherwise say she did not understand and
 // let the request go. Never returns "" — a mute give-up reads as "done".
-func (h *reactiveHandler) reaskOrGiveUp(q *dialogue.PendingQuestion, merged dialogue.Slots, text string) string {
+func (h *reactiveHandler) reaskOrGiveUp(ctx context.Context, q *dialogue.PendingQuestion, merged dialogue.Slots, text string) string {
 	question := ""
 	if len(q.Missing) > 0 {
 		question = clarifyQuestions[q.Missing[0]]
 	}
 	if question == "" || !q.CanAsk() {
-		h.clarifyStore.Delete(voiceDialogueID)
+		h.clarifyStore.Delete(dialogueIDOf(ctx))
 		log.Printf("voice: clarify — gave up on %v after %d question(s), answer was %q", q.Missing, q.Attempts, text)
 		return clarifyGaveUp
 	}
@@ -302,7 +302,7 @@ func (h *reactiveHandler) reaskOrGiveUp(q *dialogue.PendingQuestion, merged dial
 	q.Slots = merged
 	q.Attempts++
 	q.Asked = h.now()
-	h.clarifyStore.Put(voiceDialogueID, q)
+	h.clarifyStore.Put(dialogueIDOf(ctx), q)
 	log.Printf("voice: clarify — answer %q did not fill %v, asking again (attempt %d)", text, q.Missing, q.Attempts)
 	return question
 }