Add transcription comparison stats

internal/httpapi/dashboard.go

@@ -8,12 +8,13 @@ import (
 )
 
 type dashboardResponse struct {
-	At        time.Time               `json:"at"`
-	Summary   dashboardSummary        `json:"summary"`
-	Stats     *model.Stats            `json:"stats"`
-	Providers providersStatusResponse `json:"providers"`
-	Infra     infraStatusResponse     `json:"infra"`
-	Jobs      []*model.JobSummary     `json:"jobs"`
+	At                      time.Time                           `json:"at"`
+	Summary                 dashboardSummary                    `json:"summary"`
+	Stats                   *model.Stats                        `json:"stats"`
+	Providers               providersStatusResponse             `json:"providers"`
+	Infra                   infraStatusResponse                 `json:"infra"`
+	TranscriptionComparison []model.TranscriptionComparisonStat `json:"transcription_comparison"`
+	Jobs                    []*model.JobSummary                 `json:"jobs"`
 }
 
 type dashboardSummary struct {
@@ -43,6 +44,11 @@ func (s *Server) handleDashboard(w http.ResponseWriter, r *http.Request) {
 		writeError(w, http.StatusInternalServerError, err.Error())
 		return
 	}
+	comparison, err := s.store.TranscriptionComparison(ctx)
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
 
 	resp := dashboardResponse{
 		At:      now,
@@ -57,8 +63,9 @@ func (s *Server) handleDashboard(w http.ResponseWriter, r *http.Request) {
 				s.checkAudioLLM(ctx, "voxtral-small", s.cfg.VoxtralBaseURL, s.cfg.VoxtralAPIKey, s.cfg.VoxtralModel, s.cfg.VoxtralTimeout),
 			},
 		},
-		Infra: loadInfraSnapshot(r, s.cfg),
-		Jobs:  jobs,
+		Infra:                   loadInfraSnapshot(r, s.cfg),
+		TranscriptionComparison: comparison,
+		Jobs:                    jobs,
 	}
 	writeJSON(w, http.StatusOK, resp)
 }