Let her ask three times, and let a restated answer win

MaxAttempts was 1, justified as "not a nag". Wrong reading: "not a nag" is about
interrupting unprompted, and a clarifying question is part of a conversation he
started. Now three, configurable via voice.clarify_max_attempts (default 3).
Three, because after that the likely problem is she misheard the whole request,
not one slot.

Answer used to keep the parked value, so "в три" then "нет, в пять" threw the
five away. Now a value the answer carries wins for the slot she asked about.
Only for the clarify answer — a correction in a fresh turn is followUpMerge.

The eight-field chained assertion in the Answer test is one DeepEqual now, so a
new field in Slots is covered without touching the test.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CGeSZxh1DCtRxmFVSYVGvJ

internal/config/config.go

@@ -263,6 +263,10 @@ type VoiceConfig struct {
 	// default if unset.
 	QueryMinScore float64 `json:"query_min_score,omitempty"`
 
+	// ClarifyMaxAttempts — how many clarifying questions she may ask about one
+	// request before she gives up and says she did not understand. Default 3.
+	ClarifyMaxAttempts int `json:"clarify_max_attempts,omitempty"`
+
 	// Persona — optional prompt prefix that tunes maven's character. Prepended
 	// to every LLM system prompt (nudge phrasing, note queries, general
 	// knowledge). Empty string ⇒ current hardcoded persona (feminine-gendered
@@ -390,7 +394,9 @@ const (
 	DefaultAutotuneInterval = 10 * time.Minute
 	DefaultRouterThreshold  = 0.55
 	DefaultQueryMinScore    = 0.55
-	DefaultToolTimeout      = 30 * time.Second
+	// DefaultClarifyMaxAttempts — see dialogue.DefaultMaxAttempts.
+	DefaultClarifyMaxAttempts = 3
+	DefaultToolTimeout        = 30 * time.Second
 
 	DefaultFactEnrichmentInterval = 30 * time.Second
 )
@@ -472,6 +478,9 @@ func (c *Config) applyDefaults() {
 		if c.Voice.QueryMinScore <= 0 {
 			c.Voice.QueryMinScore = DefaultQueryMinScore
 		}
+		if c.Voice.ClarifyMaxAttempts <= 0 {
+			c.Voice.ClarifyMaxAttempts = DefaultClarifyMaxAttempts
+		}
 		if c.Voice.ToolTimeout <= 0 {
 			c.Voice.ToolTimeout = Duration(DefaultToolTimeout)
 		}