joanjcaceres/sccircuits: sccircuits 0.1.1

Fixed Project cosine operators directly onto truncated Fock bases using analytical displacement-operator matrix elements. Apply the exact projection to Circuit nonlinear terms, second harmonics, fermionic half-phase coupling, BBQ multimode Hamiltonians, and nonlinear gradients. Performance The single-mode nonlinear Hamiltonian benchmark at dimension 96 is approximately 3.7x faster than the previous scipy.linalg.cosm implementation. Validation Added analytical projection, multimode, gradient, and performance regression tests. Verified package builds and pip installation across supported Python versions.