topLevelPathSegments

Canonical set of top-level path segments this router dispatches on. route refuses segments outside this set, so a new when branch stays dead (and its feature tests fail) until its segment is added here. Every entry must also be declared as an android:pathPrefix in the https App Links intent-filter in androidApp/src/main/AndroidManifest.xml — DeepLinkManifestConsistencyTest (androidApp unit tests) enforces that directly from this set.