Jeroen's ruling from the Groombridge/Lendel zoom-ladder captures: the BHAG
stays 'a Reach a character can travel through'; the Phase 4 exit bar now
additionally requires a continuous Atlas zoom ladder (planetary map -> tile
scale, each level deterministically derived at native granularity, never
magnified interpolation). Evidence in the record: the 16-district window is
sub-pixel vs its heightmap source at Lendel scale, so everything below fit
zoom is D-227 invented detail that must be derived, not smoothed.
CLAUDE.md Phase-4 row carries the condition; T-1143 (the ladder design
pass) appended + raised to high — it and the D-226(d) floor question are
now phase-gating.