feat(linalg): eigen decomposition (eig, eigvals, eigh, eigvalsh) - #15
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This PR adds general and Hermitian eigenvalue APIs (
eig,eigvals,eigh,eigvalsh).Motivation and context
Eigen decomposition belongs with the rest of the linear algebra surface (SVD, QR, Cholesky, etc.). It was blocked in practice until complex dtypes were first-class across the stack; with complex support in place, these routines can be exposed consistently and documented like the other decompositions.
What’s changed
upper/ lower).SPEC.mdto include the new methods.Breaking changes
None.