v1.25.6 - Pack uses the account you switch to

Fixes enigma <pack> still asking to log in after you switch the seeding account.

The pack kept whatever usable token its isolated context already had, so after changing the account (e.g. default -> a freshly signed-in account) it kept the OLD account's token - whose identity no longer matched the context, making the agent prompt to log in. A per-context account marker now tells a genuine in-context token refresh (keep) apart from an account switch (re-seed the new token and align the identity). Only the pack context is touched, never your account credentials.

Ships enigma-cli@1.25.6.