vibe-qc 0.9.0 — Knowles's Kingfisher Wavefunction methods (FCI / Selected-CI / DMRG / v2RDM) via vibeqc.solvers; native D4 dispersion backend (MPL-2.0); semiempirical DFTB structure-optimization stack (DFTB0 / SCC-DFTB, 68 elements); M-series crystal symmetry; BIPOLE periodic driver (Γ-only). See CHANGELOG.md for full release notes, including the honest "Known issues" section — v0.9.0 ships ship-then-iterate; residuals tracked for 0.9.1.