Added run manifest scaffolding and helpers

internal/manifest/store_test.go

@@ -150,3 +150,73 @@ func TestLoadRejectsInvalidManifest(t *testing.T) {
 		t.Fatalf("error = %q, want session_id validation", err.Error())
 	}
 }
+
+func TestLocalStoreCreateSaveLoadRunManifestRoundTrip(t *testing.T) {
+	store := &LocalStore{}
+	ctx := context.Background()
+
+	run, err := store.CreateRun(
+		ctx,
+		"2026-05-03",
+		"forsaken",
+		"20260517T000000Z-abcdef12",
+		true,
+		[]string{"prepare", "transcribe"},
+	)
+	if err != nil {
+		t.Fatalf("CreateRun() error = %v", err)
+	}
+	run.SessionManifestPath = "/var/lib/narratio/work/forsaken/2026-05-03/manifest.json"
+	run.MarkStageRunning("prepare", time.Date(2026, 5, 3, 12, 1, 0, 0, time.UTC))
+	run.MarkStageSucceeded("prepare", time.Date(2026, 5, 3, 12, 2, 0, 0, time.UTC), []ArtifactRecord{
+		{Kind: "input", LocalPath: "inputs/session.yml"},
+	})
+	run.MarkSucceeded(time.Date(2026, 5, 3, 12, 3, 0, 0, time.UTC))
+
+	path := filepath.Join(t.TempDir(), "run-manifest.json")
+	if err := store.SaveRun(ctx, path, run); err != nil {
+		t.Fatalf("SaveRun() error = %v", err)
+	}
+
+	loaded, err := store.LoadRun(ctx, path)
+	if err != nil {
+		t.Fatalf("LoadRun() error = %v", err)
+	}
+
+	if loaded.SessionID != "2026-05-03" {
+		t.Fatalf("SessionID = %q, want %q", loaded.SessionID, "2026-05-03")
+	}
+	if loaded.Campaign != "forsaken" {
+		t.Fatalf("Campaign = %q, want %q", loaded.Campaign, "forsaken")
+	}
+	if loaded.RunID != "20260517T000000Z-abcdef12" {
+		t.Fatalf("RunID = %q, want %q", loaded.RunID, "20260517T000000Z-abcdef12")
+	}
+	if loaded.Status != RunManifestStatusSucceeded {
+		t.Fatalf("Status = %q, want %q", loaded.Status, RunManifestStatusSucceeded)
+	}
+	if loaded.Stages["prepare"] == nil || loaded.Stages["prepare"].Status != StatusSucceeded {
+		t.Fatalf("prepare stage = %#v, want succeeded", loaded.Stages["prepare"])
+	}
+	if loaded.Stages["prepare"].Action != RunStageActionRun {
+		t.Fatalf("prepare action = %q, want %q", loaded.Stages["prepare"].Action, RunStageActionRun)
+	}
+}
+
+func TestLoadRunRejectsInvalidManifest(t *testing.T) {
+	store := &LocalStore{}
+	ctx := context.Background()
+
+	path := filepath.Join(t.TempDir(), "run-manifest.json")
+	if err := os.WriteFile(path, []byte(`{"session_id":"2026-05-03"}`), 0o644); err != nil {
+		t.Fatalf("WriteFile() error = %v", err)
+	}
+
+	_, err := store.LoadRun(ctx, path)
+	if err == nil {
+		t.Fatal("expected error, got nil")
+	}
+	if !strings.Contains(err.Error(), "run_id is required") {
+		t.Fatalf("error = %q, want run_id validation", err.Error())
+	}
+}