Gauss-Riemann Spectral Calculus, Part II: Irrational Discrete Spectra, Sawtooth Bases, GDFT, and Observation Interfaces

Part II of the first Gauss-Riemann Spectral Calculus (GRSC) programme series contains Papers 6-10. It introduces irrational discrete spectral series, sawtooth bases as boundary-folding readers, generalized GDFT as a mixed spectral interface, minimal observation interfaces for classical extremal problems, and hypergeometric mother functions with Riemann-style readings. The package defines the central public tool objects of GRSC while keeping final theorem claims separate from reproducible observation and reading interfaces.