LeadLoss: Pb-loss peak picking tools and manuscript reproduction workflow

This release (paper-2025-peak-picking-v1) archives the code and data required to reproduce figures and tables for the manuscript Past the First Date: Resolving Successive Lead Loss Episodes in Zircon. Reproduction materials live in: papers/2025-peak-picking/ Start here: papers/2025-peak-picking/README.md for environment setup and commands to regenerate tables/figures. Note: The folder name reflects the project working title ("2025 peak picking"). This snapshot was archived in January 2026. This release is intended for manuscript reproducibility. The application executables are provided under the v2.x releases.