fix(runner): record failed task attempts

apps/api/internal/runner/recording.go

@@ -1,6 +1,7 @@
 package runner
 
 import (
+	"errors"
 	"strings"
 	"time"
 
@@ -210,6 +211,9 @@ func failureMetrics(err error, simulated bool) (string, map[string]any, time.Tim
 		metrics["error"] = err.Error()
 		metrics["errorCategory"] = info.Category
 		metrics["retryable"] = retryable
+		if detail := rateLimitFailureDetail(err); len(detail) > 0 {
+			metrics["rateLimit"] = detail
+		}
 	}
 	if meta.StatusCode > 0 {
 		metrics["statusCode"] = meta.StatusCode
@@ -226,6 +230,47 @@ func failureMetrics(err error, simulated bool) (string, map[string]any, time.Tim
 	return meta.RequestID, metrics, meta.ResponseStartedAt, meta.ResponseFinishedAt, meta.ResponseDurationMS
 }
 
+func rateLimitFailureDetail(err error) map[string]any {
+	var limitErr *store.RateLimitExceededError
+	if !errors.As(err, &limitErr) {
+		return nil
+	}
+	detail := map[string]any{
+		"scopeType":     limitErr.ScopeType,
+		"scopeKey":      limitErr.ScopeKey,
+		"scopeName":     limitErr.ScopeName,
+		"metric":        limitErr.Metric,
+		"limit":         limitErr.Limit,
+		"amount":        limitErr.Amount,
+		"current":       limitErr.Current,
+		"used":          limitErr.Used,
+		"reserved":      limitErr.Reserved,
+		"projected":     limitErr.Projected,
+		"windowSeconds": limitErr.WindowSeconds,
+		"retryable":     limitErr.Retryable,
+		"exceeded": map[string]any{
+			"metric":    limitErr.Metric,
+			"current":   limitErr.Current,
+			"amount":    limitErr.Amount,
+			"projected": limitErr.Projected,
+			"limit":     limitErr.Limit,
+		},
+	}
+	if limitErr.RetryAfter > 0 {
+		detail["retryAfterMs"] = limitErr.RetryAfter.Milliseconds()
+	}
+	if !limitErr.ResetAt.IsZero() {
+		detail["resetAt"] = limitErr.ResetAt.UTC().Format(time.RFC3339Nano)
+	}
+	if len(limitErr.ScopeMetadata) > 0 {
+		detail["scopeMetadata"] = limitErr.ScopeMetadata
+	}
+	if len(limitErr.Policy) > 0 {
+		detail["rateLimitPolicy"] = limitErr.Policy
+	}
+	return detail
+}
+
 func mergeMetrics(values ...map[string]any) map[string]any {
 	out := map[string]any{}
 	for _, value := range values {