A single semantic-core-v1 manifest (Eden growth as
⟨State, Topology, Rule, Schedule⟩ data) advanced by the same
modality-free stepper as every other demo. Its rewrite clause carries the
new chance predicate: an empty cell touching the cluster joins
it only a fraction of the time, the fraction set by a deterministic
hash of the cell, the step, and a salt. So the cluster grows with a rough,
fractal boundary — yet reloading the page yields the identical cluster (no
PRNG state, randomness is a pure function of the manifest). The field you
see and the chord you hear are the same cluster; neither modality rewrites
it. The status line shows the tier, read from the manifest's axes.