Bind extraction reuse to transcript identity

internal/app/extract_lifecycle_test.go

@@ -252,6 +252,32 @@ func TestExtractLifecycleSkipsCurrentResumableResult(t *testing.T) {
 	}
 }
 
+func TestExtractLifecycleRerunsAfterDirectTranscriptChange(t *testing.T) {
+	cfg, env, runner := extractionLifecycleFixture(t, true)
+	analyzeRuns := 0
+	plan := extractionLifecyclePlan(t, &analyzeRuns)
+	if _, err := executeStages(context.Background(), cfg, plan, RunOptions{Env: env}); err != nil {
+		t.Fatalf("first executeStages() error = %v", err)
+	}
+
+	persisted := loadLifecycleManifest(t, cfg)
+	trimmed := persisted.Stages["trim"].Outputs[0].LocalPath
+	if err := os.WriteFile(trimmed, []byte(`{"segments":[{"id":"changed"}]}`), 0o644); err != nil {
+		t.Fatalf("WriteFile(trimmed transcript) error = %v", err)
+	}
+	if err := (&manifest.LocalStore{}).Save(context.Background(), manifestPathFor(cfg), persisted); err != nil {
+		t.Fatalf("Save(mutated) error = %v", err)
+	}
+
+	rerun, err := executeStages(context.Background(), cfg, plan, RunOptions{Env: env})
+	if err != nil {
+		t.Fatalf("rerun executeStages() error = %v", err)
+	}
+	if len(rerun.Executed) != 2 || len(rerun.Skipped) != 0 || len(runner.requests) != 2 || analyzeRuns != 2 {
+		t.Fatalf("rerun summary = %#v requests=%d analyze=%d", rerun, len(runner.requests), analyzeRuns)
+	}
+}
+
 func TestExtractLifecycleResumesAndRerunsObsoleteResults(t *testing.T) {
 	for _, test := range []struct {
 		name   string