arXiv:2608.04197v1 Announce Type: new Abstract: Generalized squeezing interactions are foundational to quantum optics, and have recently come under experimental control in hybrid spin-oscillator quantum processors [O. B\u{a}z\u{a}van, et al., Nat. Phys. 22, 757 (2026); S. Saner, et al., Phys. Rev.