giles 7d7de86034 Fix stepper client-side [object Object] flash and missing CSSX styles ...

Three issues in the stepper island's client-side rendering:

1. do-step used eval-expr with empty env for ~cssx/tw spreads — component
   not found, result leaked as [object Object]. Fixed: call ~cssx/tw
   directly (in scope from island env) with trampoline.

2. steps-to-preview excluded spreads — SSR preview had no styling.
   Fixed: include spreads in the tree so both SSR and client render
   with CSSX classes.

3. build-children used named let (let loop ...) which produces
   unresolved Thunks in render mode due to the named-let compiler
   desugaring interacting with the render/eval boundary. Fixed:
   rewrote as plain recursive function bc-loop avoiding named let.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-03-25 00:11:06 +00:00

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