//! G₀W₀ Clean Re-implementation
//!
//! **Status**: Placeholder for re-implementation following `docs/G0W0/`
//!
//! This module will implement G₀W₀ using:
//! - Real-valued types (`f64`) on imaginary axis
//! - Exact PySCF formula matching
//! - TDD workflow (RED → GREEN → REFACTOR)
//!
//! # Implementation Plan
//!
//! Stories to be implemented (see `docs/G0W0/02_STORY_BY_STORY_PLAN.md`):
//! - **S3-1**: Frequency grid (Gauss-Legendre quadrature)
//! - **S3-2**: Polarizability P₀(iω)
//! - **S3-3**: Screening W(iω)
//! - **S3-4**: Exchange Σˣ
//! - **S3-5**: Correlation Σᶜ (CRITICAL)
//! - **S3-6**: QP solver
//!
//! # References
//!
//! - Plan: `docs/G0W0/README.md`
//! - Architecture: `docs/G0W0/01_ARCHITECTURE.md`
//! - PySCF formulas: `docs/G0W0/03_PYSCF_REFERENCE_FORMULAS.md`
//! - Type signatures: `docs/G0W0/04_TYPE_SIGNATURES.md`

#![warn(clippy::all)]
#![allow(dead_code)] // Temporary during re-implementation

// Placeholder - to be implemented following TDD workflow
// See: docs/G0W0/05_VALIDATION_CHECKLIST.md
