Coherence Field Theory: Bubble Physics, Constraint Competition Bridge

A short pedagogical bridge note showing how microgravity bubble/lens physics can illustrate macrocoherence: visible structure emerging from an active constraint hierarchy. Using Young–Laplace pressure, Bond number, capillary length, refractive inversion, surfactants, Marangoni flow, thin-film stability, and a two-layer imprint-operator model, the note frames observed form as a relational projection rather than stored substance. It is explicitly analogy-only: no GCFT derivation, no new parameters, and no gate movement. Tiny bubble, big ontology leash.