Layouts in Standard Directory Format

[demianlicht]

I'm cracking my head over this and in as much as I find several resources online, none seem to work.

I have a set of routes like:
app/
├── routes/
│ ├── crm.tsx <-- CRM layout route
│ ├── crm/ <-- Nested routes under CRM
│ │ ├── dashboard.tsx
│ │ ├── settings.tsx
│ ├── marketing.tsx <-- Marketing layout route
│ ├── marketing/ <-- Nested routes under Marketing
│ │ ├── campaigns.tsx
│ │ ├── analytics.tsx
│ ├── root.tsx <-- Default root layout

And for the life of me I can't get remix to detect them. I've tried adding a route.tsx file to each directory, an index.tsx, and all combinations of it. Succinctly, npx remix routes shows:

<Routes>
  <Route file="root.tsx">
    <Route path="fatal-error/*" file="routes/fatal-error.$.tsx" />
    <Route path="auth" file="routes/auth.tsx">
      <Route path="jwks" file="routes/auth.jwks.tsx" />
    </Route>
    <Route path="*" file="routes/$.tsx" />
  </Route>
</Routes>