btctax-cli: the CLI + reconciliation library that wires the encrypted vault (btctax-store),
ingest (btctax-adapters), and the pure projection (btctax-core) into the Phase-1 command surface
(spec §11). The library is I/O-explicit and deterministic; the binary (main.rs) is a thin clap
dispatch. PRIVACY: tests use only temp vaults + synthetic fixtures; no real user file is ever read.