add per-secret recipient groups#226
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iicky
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Jun 16, 2026
iicky
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- add `group` command to create, list, and manage named recipient groups
- add `--group NAME` to add/generate/rotate/import/edit to scope a secret to a group
- treat `everyone` and `me` as reserved tiers; deprecate `--scoped` in favor of `--group me`
- encrypt grouped secret values to group members only, alongside shared and scoped tiers
- store grouped ciphertext and group membership in the vault and cover it in the integrity MAC
- handle grouped values in export, merge, and the Python/Node bindings
- document recipient groups in SPEC.md and THREAT_MODEL.md
- add CLI tests for group lifecycle and grouped secret access
- add grouped field to SecretEntry and groups map to Meta - add MAC v6 (blake3v4) covering grouped ciphertexts and group membership; gate on first group so group-free vaults stay byte-identical; reject grouped data under pre-v6 MACs - add src/groups.rs: create/delete/add_member/remove_member/resolve_member, reserved names everyone/me - add murk group create/ls/add/rm and --group on add/generate/import/edit and circle authorize - route --group everyone/me to shared/scoped; keep --scoped as deprecated alias for --group me - enforce one base tier per key: setting shared clears grouped, setting a group clears shared - preserve on-disk secrets a non-member can't decrypt across save so they aren't dropped - resolve grouped values in get_secret/resolve_secrets so bindings read them; strip revoked members from groups - merge grouped like scoped, union group membership in regenerate_meta - update SPEC.md and THREAT_MODEL.md
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