pub fn history_dir(project_root: &Path, phase: u32) -> PathBufExpand description
Path to the archived-capture-history directory for a phase (16b).
.devflow/history/phase-NN/ holds retained per-stage capture generations
so a false-positive self-report can be diagnosed after the fact. Exposed
as a constructor (rather than inlined at each call site) so downstream
tooling (16h in 16-07’s correlation, 16i in 16-05’s enumeration) always
derives the path from here instead of hardcoding it.