v153 - v43 SHELL + STATIC STARS isolation
Base: the user's CORRECT, confirmed non-flashing v43 DEEPER WING CURVE.

Absolutely all v43 visual lifecycle/ordering/connections are preserved.
Only the 36 geometry message objects were replaced:
Manta gLine geometry -> 36 static star gSetPixel positions.

This is the decisive A/B isolation:
- if v153 does NOT flash: v43 shell is good; the later Felt visual architecture
  introduced the flash.
- if v153 DOES flash: the star drawing primitive/geometry itself changes the
  OLED handoff behavior, despite identical v43 lifecycle.

Audio/control are exactly whatever v43 already had; this is a diagnostic visual build.
