feat: complete voice session safety and confirmation flow

frontend/src/types/voiceSession.ts

@@ -10,8 +10,12 @@ export interface VoiceTurnSummary {
   intent_confidence: number | null
   understanding_summary: string | null
   requires_confirmation: boolean
+  confirmation_state: string
   confirmation_reason: string | null
   confirmation_message: string | null
+  safety_flags: string[]
+  safety_blocked: boolean
+  safety_message: string | null
   assistant_text: string | null
   assistant_audio_ready: boolean
   assistant_audio_url: string | null
@@ -49,7 +53,10 @@ export interface VoiceSessionSummary {
   latest_detected_intent: string | null
   latest_understanding_summary: string | null
   latest_requires_confirmation: boolean
+  latest_confirmation_state: string | null
   latest_confirmation_message: string | null
+  latest_safety_flags: string[]
+  latest_safety_message: string | null
   latest_assistant_audio_ready: boolean
   last_turn_status: string | null
   transcription_mode_hint: string | null
@@ -71,6 +78,23 @@ export interface VoiceTurnAcceptedResponse {
   status: string
 }
 
+export interface VoiceSessionAnalytics {
+  window_days: number | null
+  total_sessions: number
+  active_sessions: number
+  finalized_sessions: number
+  abandoned_sessions: number
+  total_turns: number
+  successful_turns: number
+  failed_turns: number
+  asr_failures: number
+  tts_failures: number
+  low_confidence_turns: number
+  safety_interventions: number
+  turn_success_rate: number
+  finalize_conversion_rate: number
+}
+
 export interface VoiceTurnUploadAcceptedResponse extends VoiceTurnAcceptedResponse {
   transcription_provider: string | null
 }