Vault sync was failing with "remote: Failed to authenticate user" against
git.azcomputerguru.com. Root cause: Git Credential Manager (first in the
helper chain) shadowed the valid PAT in the store helper with a stale
cached OAUTH_USER JWT.
Fix (machine-local git config, already applied — not in the repo):
- Reset the vault repo credential.helper to store-only (drop inherited GCM).
- Pin azcomputerguru@ in the vault remote URL so store returns the durable
PAT instead of a volatile OAUTH_USER JWT.
Repo change here is documentation only: a feedback memory capturing the
diagnosis + fix, plus an index line in MEMORY.md.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
