Remove unused captured state and orphan helpers

internal/usecase/runner_test.go

@@ -2586,10 +2586,6 @@ func float64Ptr(v float64) *float64 {
 	return &v
 }
 
-func stringPtr(v string) *string {
-	return &v
-}
-
 func intPtr(v int) *int {
 	return &v
 }

internal/usecase/smoke_reachability.go

@@ -21,12 +21,11 @@ type reachabilityProbe struct {
 }
 
 type reachabilityProbeOutcome struct {
-	supported       bool
-	reason          domain.SmokeTestReason
-	initialEndpoint string
-	reachable       *bool
-	evidence        llm.HTTPExecutionEvidence
-	failure         domain.ExecutionFailureKind
+	supported bool
+	reason    domain.SmokeTestReason
+	reachable *bool
+	evidence  llm.HTTPExecutionEvidence
+	failure   domain.ExecutionFailureKind
 }
 
 func (p reachabilityProbe) run(
@@ -44,7 +43,7 @@ func (p reachabilityProbe) run(
 	if err != nil {
 		return reachabilityProbeOutcome{}, fmt.Errorf("prepare reachability endpoint: %w", err)
 	}
-	result := reachabilityProbeOutcome{supported: true, initialEndpoint: endpoint}
+	result := reachabilityProbeOutcome{supported: true}
 	response, evidence, requestErr := p.client.GetWithEvidence(ctx, endpoint, timeoutSeconds)
 	if response != nil && response.Body != nil {
 		_ = response.Body.Close()

internal/usecase/smoke_reachability_test.go

@@ -62,7 +62,7 @@ func TestReachabilityProbeRemovesURLCredentials(t *testing.T) {
 	if observed == nil || observed.URL.User != nil || observed.Header.Get("Authorization") != "" {
 		t.Fatalf("probe request retained URL credentials: %+v", observed)
 	}
-	if result.initialEndpoint != "https://example.invalid/health?check=1" || result.evidence.CredentialsSupplied {
+	if result.evidence.Endpoint != "https://example.invalid/health?check=1" || result.evidence.CredentialsSupplied {
 		t.Fatalf("credential-free evidence = %+v", result)
 	}
 }