Capability Spec Delta: crypto (restore-crypto-fold-keys-vault)

Package: @suaveplan/crypto Status: PROPOSED

ADDED Requirements

Requirement: Keypair, Keychain storage, BIP39, and legacy Vault live inside `@suaveplan/crypto`

@suaveplan/crypto SHALL own the keypair generation/validation surface, the in-memory and serialized keychain storage adapters, the BIP39 mnemonic generation/restoration helpers, and the existing pre-Authority Vault class. The packages @suaveplan/crypto-keys and @suaveplan/crypto-vault MUST be deleted; their content is folded under crypto/src/keychain/ and crypto/src/vault/ respectively.

The misleadingly-named ChainSigner from crypto-vault MUST be dropped (it does not actually sign under a hierarchy); slice 3 introduces Authority to take its place.

Scenario: keypair generation surface available

WHEN a consumer imports Keypair, generateKeypair, validateKeypair from @suaveplan/crypto
THEN all three resolve and behave identically to their pre-fold equivalents in @suaveplan/crypto-keys

Scenario: BIP39 surface available

WHEN a consumer imports generateMnemonic, validateMnemonic, mnemonicToSeed from @suaveplan/crypto
THEN all three resolve and behave identically to their pre-fold equivalents in @suaveplan/crypto-vault

Scenario: legacy Vault surface available transitionally

WHEN a consumer imports the legacy Vault class from @suaveplan/crypto/vault/legacy-vault
THEN it resolves and behaves identically to the pre-fold crypto-vault Vault class

Scenario: ChainSigner is gone

WHEN a consumer attempts to import ChainSigner from any @suaveplan/crypto* package
THEN the import fails (the symbol does not exist anywhere in genesis)

Scenario: deleted packages no longer referenced

WHEN the test runs grep -rln "@suaveplan/crypto-keys\|@suaveplan/crypto-vault" packages/
THEN zero matches are found (excluding openspec/archive/)

Verified by: tests/folded-keypair.test.ts::"keypair surface resolves under @suaveplan/crypto" AND tests/folded-mnemonic.test.ts::"BIP39 surface resolves under @suaveplan/crypto" AND tests/legacy-vault.test.ts::"legacy Vault resolves under @suaveplan/crypto/vault/legacy-vault" AND tests/chain-signer-removed.test.ts::"ChainSigner is no longer importable" AND tests/no-deleted-package-imports.test.ts::"no consumer imports the deleted packages"

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