Basin Organisation as a Phase Whole

This paper develops a cross-branch Harmonic Physics architecture in which nested phase organisations may close and persist as one physical phase-whole, termed a basin. Basin nesting is defined as relational organisation rather than comparative spatial size, geometric containment, or traversal between containers. Nested phases remain individually real, while participation among co-present basins may be graded, overlapping, resolution-dependent, and observer-resolved. Basin identity, operational accounting surfaces, and domain-specific causal boundaries are kept formally distinct. The paper extends and supersedes the conceptual whole-before-projection argument developed in “What the Hilbert-Space Operator Measures: Structure Before Force in Gravity and Electromagnetism.” It retains the bounded claim that one complete organisation may support several physically distinct observer- and channel-resolved readouts, while withdrawing the earlier rigid allocation of gravity to temporal ordering and electromagnetism to phase alignment. The operator-inspired quantities introduced here remain architectural placeholders rather than derived Hilbert-space operators, projectors, or unification laws. A relational translation firewall separates Phase-native organisation from conventional geometrical reconstruction. Deep-space navigation provides the operational anchor: electromagnetic carrier phase, accumulated cycle counts, calibrated clock references, Doppler, and light-transfer observations are jointly reconciled with dynamics, reference frames, geometry, gravitational parameters, and nuisance models to reconstruct spacecraft state and the gravitational parameter mu equals GM. The resulting geometry is treated as the conventional observer-side representation of phase-, clock-, and light-referenced physical registrations, not as a Phase-native primitive. The minimum Phase-native observer-reference location grammar is represented by an oriented triad consisting of an observer organisation and two independently specified reference organisations. Its three pairwise phase relations define a relational phase-location signature and loop-consistency diagnostic. This structure is not a geometric triangle, does not by itself determine a unique coordinate, and is not presented as empirical evidence for Phase Theory. Conventional navigation remains the established reconstruction architecture. The paper also defines an exact conventional Planck-normalised source ruler: Sigma B equals mu B divided by c squared times the Planck length. The same dimensionless value may also be expressed as source mass divided by Planck mass, Compton angular-frequency scale divided by Planck angular frequency, gravitational radius divided by Planck length, or Planck length divided by reduced Compton wavelength. This identity is exact under the declared mass, radius, wavelength, and Planck-unit conventions. It provides a precise target coordinate for the source amplitude but does not derive that amplitude from Phase Theory. Three central Phase-native laws remain open. The closure law C must determine when nested relations form one persistent whole. The direct whole-to-ruler functional F Sigma must predict Sigma B without using target-side mass, GM, redshift, orbital information, navigation residuals, or other gravity-derived quantities. The source-location response functional H phi must relate the complete basin state to a qualified triadic phase-location signature without importing geometry, coordinate radius, acceleration, or mu. A staged prospective falsification programme is included. It separates synthetic and physical closure tests, closed-whole source-invariance checks, numerical-relativity constraints, and a final blind whole-to-source prediction. No test outcome is claimed in this paper, and the blocked stages remain explicitly dependent on independently frozen candidate laws.