Architecture Decision Records

Permanent record of why the project is shaped the way it is — conclusions, not plans. Each ADR is immutable once accepted; a reversal is a new ADR that supersedes the old one (the old one stays, marked superseded).

ADR	Decision
0001	Pure-Rust ZIP reader with no C-FFI dependencies
0002	Read/decrypt-only scope; recognize-and-refuse unsupported methods and encryption
0003	Tiered validation against real third-party corpora