mavend: he can pick one by position (V-448)

Read before routing and only when a list is bound: with nothing offered,
"второй" is an ordinary word and keeps routing. No verb reads it back
rather than guessing what to do with it.

cmd/mavend/actions_task.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"log"
 
+	"github.com/kami/maven/internal/dialogue"
 	"github.com/kami/maven/internal/ipc"
 	"github.com/kami/maven/internal/router"
 	"github.com/kami/maven/internal/store"
@@ -70,7 +71,16 @@ func (h *reactiveHandler) queryTasks(ctx context.Context, t *queryTurn) (string,
 		log.Printf("voice: list tasks: %v", err)
 		return "не получилось посмотреть задачи.", true
 	}
-	return tasks.FormatRU(tasks.Rank(taskItems(live), h.now())), true
+	ranked := tasks.Rank(taskItems(live), h.now())
+	// Bind what she is about to say, in the order she says it, so "второй"
+	// means the second task he heard (ordinal.go).
+	spoken := tasks.Spoken(ranked)
+	cands := make([]dialogue.Candidate, 0, len(spoken))
+	for _, r := range spoken {
+		cands = append(cands, dialogue.Candidate{Kind: "task", Ref: r.ID, Label: r.Text})
+	}
+	h.offerCandidates(cands)
+	return tasks.FormatRU(ranked), true
 }
 
 // taskItems maps wire rows onto the ranker's input. Written here rather than in