pack_backup / unpack_backup ship the magic header, format version,
Argon2id KDF, XChaCha20-Poly1305 AEAD, and zstd-compressed JSON
envelope. Empty-vault round-trip is the foundation; later tasks
add items, attachments, image, and git history.
Resolves conflicts from merging origin/main (idfoto→relicario rename):
- Kept Plan 1A's typed-item vault.rs, lib.rs, integration.rs over main's
old entry-based versions
- Took main's relicario_dir() fix in CLI main.rs (sed had missed idfoto_dir)
- Kept Plan 1A's UnsupportedFormatVersion error variant in crypto.rs
- Kept Plan 1A's opaque Decrypt message (audit M4) in error.rs
- Deleted entry.rs (replaced by item.rs + typed modules in Plan 1A)
- Resolved Cargo.toml description to main's "relicario password manager"
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Renames crate directories and sweeps identifiers so Plan 1B can reference
the post-rename names throughout.
- git mv crates/idfoto-{core,cli,wasm} → crates/relicario-{core,cli,wasm}
- sed sweep: idfoto_core/idfoto-core/IdfotoError/IDFOTO_IMAGE/.idfoto/ etc.
- All 128 relicario-core tests pass post-sweep
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
