Discover metadata with new workspace filenames

internal/state/filesystem.go

@@ -517,7 +517,11 @@ func validatePathSegment(name string, value string) error {
 }
 
 func isMetadataFilename(name string) bool {
-	return strings.HasPrefix(name, "metadata.") && strings.HasSuffix(name, ".json") && len(name) > len("metadata..json")
+	if !strings.HasPrefix(name, "metadata.") || !strings.HasSuffix(name, ".json") {
+		return false
+	}
+	runID := strings.TrimSuffix(strings.TrimPrefix(name, "metadata."), ".json")
+	return strings.TrimSpace(runID) != "" && !strings.ContainsAny(runID, `/\`) && runID != "." && runID != ".."
 }
 
 func readJSON(path string, target any) error {

internal/state/filesystem_test.go

@@ -642,11 +642,79 @@ func TestSaveMetadataUsesExplicitMetadataPath(t *testing.T) {
 	}
 }
 
+func TestListReportsDiscoversNewMetadataFilename(t *testing.T) {
+	store := newTestStore(t)
+	older := resolveDailyAt(t, "2026-05-29T05:00:00-05:00")
+	newer := resolveTodayAt(t, "2026-05-29T08:00:00-05:00")
+	olderPaths := savePriorMetadata(t, store, older, stateBriefingMetadata(older))
+	newerPaths := savePriorMetadata(t, store, newer, stateBriefingMetadata(newer))
+
+	records, err := store.ListReports(context.Background(), 0)
+	if err != nil {
+		t.Fatalf("ListReports() error = %v", err)
+	}
+	if len(records) != 2 {
+		t.Fatalf("ListReports() len = %d, want 2: %#v", len(records), records)
+	}
+	if records[0].RunID != newer.Metadata().RunID || records[0].MetadataPath != newerPaths.Metadata {
+		t.Fatalf("first record = %#v, want newer metadata path %q", records[0], newerPaths.Metadata)
+	}
+	if records[1].RunID != older.Metadata().RunID || records[1].MetadataPath != olderPaths.Metadata {
+		t.Fatalf("second record = %#v, want older metadata path %q", records[1], olderPaths.Metadata)
+	}
+
+	metadata, metadataPath, err := store.LoadMetadataByRunID(context.Background(), older.Metadata().RunID)
+	if err != nil {
+		t.Fatalf("LoadMetadataByRunID() error = %v", err)
+	}
+	if metadata.RunID != older.Metadata().RunID || metadataPath != olderPaths.Metadata {
+		t.Fatalf("loaded metadata = %#v path %q, want run %q path %q", metadata, metadataPath, older.Metadata().RunID, olderPaths.Metadata)
+	}
+	if want := "metadata." + older.Metadata().RunID + ".json"; filepath.Base(metadataPath) != want {
+		t.Fatalf("metadata filename = %q, want %q", filepath.Base(metadataPath), want)
+	}
+}
+
+func TestListReportsIgnoresNonMetadataJSON(t *testing.T) {
+	store := newTestStore(t)
+	resolved := resolveDailyAt(t, "2026-05-29T05:00:00-05:00")
+	paths := savePriorMetadata(t, store, resolved, stateBriefingMetadata(resolved))
+	for _, path := range []string{
+		paths.ModuleSnapshot,
+		paths.GeneratedTextRaw,
+		paths.GeneratedTextResult,
+		paths.GeneratedText,
+		paths.RenderContext,
+		filepath.Join(filepath.Dir(paths.Metadata), resolved.Metadata().RunID+".metadata.json"),
+	} {
+		if err := os.MkdirAll(filepath.Dir(path), 0o755); err != nil {
+			t.Fatalf("create non-metadata artifact directory: %v", err)
+		}
+		if err := os.WriteFile(path, []byte(`{not json`), 0o600); err != nil {
+			t.Fatalf("write non-metadata artifact %q: %v", path, err)
+		}
+	}
+
+	records, err := store.ListReports(context.Background(), 0)
+	if err != nil {
+		t.Fatalf("ListReports() error = %v", err)
+	}
+	if len(records) != 1 {
+		t.Fatalf("ListReports() len = %d, want only metadata record: %#v", len(records), records)
+	}
+	if records[0].MetadataPath != paths.Metadata {
+		t.Fatalf("MetadataPath = %q, want %q", records[0].MetadataPath, paths.Metadata)
+	}
+}
+
 func TestFindPriorSnapshot(t *testing.T) {
 	store := newTestStore(t)
 	first := resolveDailyAt(t, "2026-05-29T05:00:00-05:00")
 	second := resolveDailyAt(t, "2026-05-29T08:00:00-05:00")
 	paths := savePriorMetadata(t, store, first, stateBriefingMetadata(first))
+	if want := "metadata." + first.Metadata().RunID + ".json"; filepath.Base(paths.Metadata) != want {
+		t.Fatalf("metadata filename = %q, want %q", filepath.Base(paths.Metadata), want)
+	}
 
 	prior, err := store.FindPriorSnapshot(context.Background(), second)
 	if err != nil {