Protect initial pipeline stage resume semantics

internal/app/runner_test_helpers_test.go

@@ -2,8 +2,10 @@ package app
 
 import (
 	"context"
+	"testing"
 
 	"gitea.maximumdirect.net/eric/narratio/internal/config"
+	"gitea.maximumdirect.net/eric/narratio/internal/manifest"
 	"gitea.maximumdirect.net/eric/narratio/internal/stage"
 )
 
@@ -13,3 +15,37 @@ func executeStages(ctx context.Context, cfg *config.Config, stages []stage.Stage
 	plan := BoundedPlan{stages: append([]stage.Stage(nil), stages...)}
 	return executePlan(ctx, cfg, plan, opts)
 }
+
+func seedCurrentSemanticEvidence(t *testing.T, cfg *config.Config, m *manifest.Manifest, names ...string) {
+	t.Helper()
+	providers := make(map[string]stage.SemanticConfigFingerprinter)
+	for _, candidate := range stage.All() {
+		if provider, ok := candidate.(stage.SemanticConfigFingerprinter); ok {
+			providers[candidate.Name()] = provider
+		}
+	}
+	for _, name := range names {
+		record := m.Stages[name]
+		if record == nil {
+			t.Fatalf("stage %q must exist before semantic evidence is seeded", name)
+		}
+		provider, ok := providers[name]
+		if !ok {
+			t.Fatalf("stage %q has no semantic fingerprint provider", name)
+		}
+		fingerprint, err := provider.SemanticConfigFingerprint(&stage.Env{Config: cfg})
+		if err != nil {
+			t.Fatalf("fingerprint stage %q: %v", name, err)
+		}
+		record.SemanticConfig = &fingerprint
+	}
+}
+
+func loadConfigForSemanticEvidence(t *testing.T, pipelinePath, campaignPath, sessionPath string) *config.Config {
+	t.Helper()
+	cfg, err := config.Load(pipelinePath, campaignPath, sessionPath)
+	if err != nil {
+		t.Fatalf("load config for semantic evidence: %v", err)
+	}
+	return cfg
+}