Merge import: 1Password .1pux / CSV import and encrypted export

Conflicts in kv-ffi (module list, dev-dependencies) with passkeys: kept both.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

crates/kv-ffi/Cargo.toml

@@ -20,6 +20,7 @@ kv-crypto.workspace = true
 kv-model.workspace = true
 kv-store.workspace = true
 kv-sync.workspace = true
+kv-import.workspace = true
 serde.workspace = true
 hkdf.workspace = true
 sha2.workspace = true
@@ -35,3 +36,4 @@ kv-sync = { workspace = true, features = ["test-server"] }
 tempfile.workspace = true
 p256.workspace = true
 ciborium.workspace = true
+zip = { version = "9", default-features = false, features = ["deflate-flate2"] }