eval: include structured results, run config, and summary in JSON output

pkg/evaluation/eval.go

@@ -90,6 +90,7 @@ func Evaluate(ctx context.Context, ttyOut, out io.Writer, isTTY bool, runName st
 		Name:      runName,
 		Timestamp: startTime,
 		Duration:  duration,
+		Config:    cfg,
 		Results:   results,
 		Summary:   summary,
 	}
@@ -356,12 +357,18 @@ func (r *Runner) runSingleEval(ctx context.Context, evalSess *InputSession) (Res
 	if r.judge != nil && len(evals.Relevance) > 0 {
 		// Use transcript for relevance checking to preserve temporal ordering
 		transcript := buildTranscript(events)
-		passed, failed, err := r.judge.CheckRelevance(ctx, transcript, evals.Relevance)
+		results, err := r.judge.CheckRelevance(ctx, transcript, evals.Relevance)
 		if err != nil {
 			return result, fmt.Errorf("relevance check failed: %w", err)
 		}
-		result.RelevancePassed = float64(passed)
-		result.FailedRelevance = failed
+		var passed float64
+		for _, rr := range results {
+			if rr.Passed {
+				passed++
+			}
+		}
+		result.RelevancePassed = passed
+		result.RelevanceResults = results
 	}
 
 	slog.Debug("Evaluation complete", "title", evalSess.Title, "duration", time.Since(startTime))

pkg/evaluation/eval_test.go

@@ -196,7 +196,7 @@
 		},
 		{
 			name:         "relevance failures listed",
-			result:       Result{RelevanceExpected: 2, RelevancePassed: 0, FailedRelevance: []RelevanceResult{{Criterion: "check A", Reason: "reason A"}, {Criterion: "check B", Reason: "reason B"}}},
+			result:       Result{RelevanceExpected: 2, RelevancePassed: 0, RelevanceResults: []RelevanceResult{{Criterion: "check A", Passed: false, Reason: "reason A"}, {Criterion: "check B", Passed: false, Reason: "reason B"}}},
 			wantSuccess:  nil,
 			wantFailures: []string{"relevance: check A (reason: reason A)", "relevance: check B (reason: reason B)"},
 		},
@@ -658,7 +658,7 @@
 				Size:              "S",
 				RelevanceExpected: 2,
 				RelevancePassed:   1,
-				FailedRelevance:   []RelevanceResult{{Criterion: "check failed", Reason: "did not meet criteria"}},
+				RelevanceResults:   []RelevanceResult{{Criterion: "check failed", Passed: false, Reason: "did not meet criteria"}},
 			},
 			wantContains: []string{
 				"✗ mixed-session", // overall failed

pkg/evaluation/judge.go

@@ -97,17 +97,18 @@ func (j *Judge) Validate(ctx context.Context) error {
 // RelevanceResult contains the result of a single relevance check.
 type RelevanceResult struct {
 	Criterion string `json:"criterion"`
+	Passed    bool   `json:"passed"`
 	Reason    string `json:"reason"`
 }
 
 // CheckRelevance runs all relevance checks concurrently with the configured concurrency.
-// It returns the number of passed checks, a slice of failed results with reasons, and an error
-// if any check encountered an error (e.g. judge model misconfiguration). Errors cause a hard
-// failure so that configuration issues are surfaced immediately rather than silently producing
-// zero-relevance results.
-func (j *Judge) CheckRelevance(ctx context.Context, response string, criteria []string) (passed int, failed []RelevanceResult, err error) {
+// It returns a result for every criterion (both passed and failed, each with a reason from
+// the judge model), and an error if any check encountered an error (e.g. judge model
+// misconfiguration). Errors cause a hard failure so that configuration issues are surfaced
+// immediately rather than silently producing zero-relevance results.
+func (j *Judge) CheckRelevance(ctx context.Context, response string, criteria []string) (results []RelevanceResult, err error) {
 	if len(criteria) == 0 {
-		return 0, nil, nil
+		return nil, nil
 	}
 
 	// Create work channel
@@ -122,23 +123,23 @@ func (j *Judge) CheckRelevance(ctx context.Context, response string, criteria []
 	close(work)
 
 	// Results slice preserves order
-	type result struct {
+	type rawResult struct {
 		passed bool
 		reason string
 		err    error
 	}
-	results := make([]result, len(criteria))
+	rawResults := make([]rawResult, len(criteria))
 
 	var wg sync.WaitGroup
 	for range j.concurrency {
 		wg.Go(func() {
 			for item := range work {
 				if ctx.Err() != nil {
-					results[item.index] = result{err: fmt.Errorf("context cancelled: %w", ctx.Err())}
+					rawResults[item.index] = rawResult{err: fmt.Errorf("context cancelled: %w", ctx.Err())}
 					continue
 				}
 				pass, reason, checkErr := j.checkSingle(ctx, response, item.criterion)
-				results[item.index] = result{passed: pass, reason: reason, err: checkErr}
+				rawResults[item.index] = rawResult{passed: pass, reason: reason, err: checkErr}
 			}
 		})
 	}
@@ -147,26 +148,24 @@ func (j *Judge) CheckRelevance(ctx context.Context, response string, criteria []
 	// Aggregate results. Any error is fatal — return it immediately so the
 	// caller can fail fast on judge misconfiguration.
 	var errs []error
-	for i, r := range results {
+	results = make([]RelevanceResult, len(criteria))
+	for i, r := range rawResults {
 		if r.err != nil {
 			errs = append(errs, fmt.Errorf("checking %q: %w", criteria[i], r.err))
 			continue
 		}
-		if r.passed {
-			passed++
-		} else {
-			failed = append(failed, RelevanceResult{
-				Criterion: criteria[i],
-				Reason:    r.reason,
-			})
+		results[i] = RelevanceResult{
+			Criterion: criteria[i],
+			Passed:    r.passed,
+			Reason:    r.reason,
 		}
 	}
 
 	if len(errs) > 0 {
-		return passed, failed, errors.Join(errs...)
+		return results, errors.Join(errs...)
 	}
 
-	return passed, failed, nil
+	return results, nil
 }
 
 // checkSingle checks a single relevance criterion against the response.

pkg/evaluation/judge_test.go

@@ -47,10 +47,9 @@ func TestJudge_CheckRelevance_EmptyCriteria(t *testing.T) {
 	t.Parallel()
 
 	judge := NewJudge(nil, 1)
-	passed, failed, err := judge.CheckRelevance(t.Context(), "some response", nil)
+	results, err := judge.CheckRelevance(t.Context(), "some response", nil)
 
-	assert.Equal(t, 0, passed)
-	assert.Empty(t, failed)
+	assert.Empty(t, results)
 	assert.NoError(t, err)
 }
 
@@ -63,11 +62,10 @@ func TestJudge_CheckRelevance_ContextCanceled(t *testing.T) {
 	cancel() // Cancel immediately
 
 	criteria := []string{"criterion1", "criterion2", "criterion3"}
-	passed, failed, err := judge.CheckRelevance(ctx, "some response", criteria)
+	results, err := judge.CheckRelevance(ctx, "some response", criteria)
 
 	// All should have errors due to context cancellation
-	assert.Equal(t, 0, passed)
-	assert.Empty(t, failed)
+	assert.Len(t, results, len(criteria))
 	require.Error(t, err)
 	assert.Contains(t, err.Error(), "context cancelled")
 }

pkg/evaluation/save.go

@@ -374,11 +374,15 @@ func SaveRunJSON(run *EvalRun, outputDir string) (string, error) {
 	return saveJSON(run, filepath.Join(outputDir, run.Name+".json"))
 }
 
-// SaveRunSessionsJSON saves all eval sessions to a single JSON file.
-// Each session includes its eval criteria in the "evals" field.
-// This complements SaveRunSessions which saves to SQLite, providing a
-// human-readable format for inspection.
+// SaveRunSessionsJSON saves the full evaluation run output to a JSON file.
+// The output includes run metadata (config, summary) and all sessions with
+// their eval criteria and scoring results (pass/fail, judge reasoning, errors).
 func SaveRunSessionsJSON(run *EvalRun, outputDir string) (string, error) {
+	// Populate eval results on each session
+	for i := range run.Results {
+		populateEvalResult(&run.Results[i])
+	}
+
 	// Collect all sessions from results
 	var sessions []*session.Session
 	for i := range run.Results {
@@ -387,8 +391,79 @@ func SaveRunSessionsJSON(run *EvalRun, outputDir string) (string, error) {
 		}
 	}
 
+	output := RunOutput{
+		Name:      run.Name,
+		Timestamp: run.Timestamp,
+		Duration:  run.Duration.Round(time.Millisecond).String(),
+		Config: RunOutputConfig{
+			Agent:       run.Config.AgentFilename,
+			JudgeModel:  run.Config.JudgeModel,
+			Concurrency: run.Config.Concurrency,
+			EvalsDir:    run.Config.EvalsDir,
+			BaseImage:   run.Config.BaseImage,
+		},
+		Summary:  run.Summary,
+		Sessions: sessions,
+	}
+
 	outputPath := filepath.Join(outputDir, run.Name+".json")
-	return saveJSON(sessions, outputPath)
+	return saveJSON(output, outputPath)
+}
+
+// populateEvalResult copies scoring data from a Result to its Session's EvalResult field.
+func populateEvalResult(result *Result) {
+	if result.Session == nil {
+		return
+	}
+
+	successes, failures := result.checkResults()
+
+	evalResult := &session.EvalResult{
+		Passed:       len(failures) == 0,
+		Successes:    successes,
+		Failures:     failures,
+		Error:        result.Error,
+		Cost:         result.Cost,
+		OutputTokens: result.OutputTokens,
+	}
+
+	// Populate size check if size was evaluated
+	if result.SizeExpected != "" {
+		evalResult.Checks.Size = &session.SizeCheck{
+			Passed:   result.Size == result.SizeExpected,
+			Actual:   result.Size,
+			Expected: result.SizeExpected,
+		}
+	}
+
+	// Populate tool calls check if tool calls were evaluated
+	if result.ToolCallsExpected > 0 {
+		evalResult.Checks.ToolCalls = &session.ToolCallsCheck{
+			Passed: result.ToolCallsScore >= 1.0,
+			Score:  result.ToolCallsScore,
+		}
+	}
+
+	// Populate relevance check if relevance was evaluated
+	if result.RelevanceExpected > 0 {
+		results := make([]session.RelevanceCriterionResult, 0, len(result.RelevanceResults))
+		for _, rr := range result.RelevanceResults {
+			results = append(results, session.RelevanceCriterionResult{
+				Criterion: rr.Criterion,
+				Passed:    rr.Passed,
+				Reason:    rr.Reason,
+			})
+		}
+
+		evalResult.Checks.Relevance = &session.RelevanceCheck{
+			Passed:      result.RelevancePassed >= result.RelevanceExpected,
+			PassedCount: result.RelevancePassed,
+			Total:       result.RelevanceExpected,
+			Results:     results,
+		}
+	}
+
+	result.Session.EvalResult = evalResult
 }
 
 func Save(sess *session.Session, filename string) (string, error) {