jif c419fd01a7 Fix enterprise MCP credential selection and reauthentication (#55859) ...

## What changed

- Prefer an eligible account grant over saved enterprise credentials, with a fallback to saved enterprise sign-in during initial connection if the account grant is rejected.
- Remember rejected account grants per enterprise MCP registration across threads and report authentication failures as requiring reauthentication. Keep administrator configuration errors distinct from sign-in failures.
- Compare account grants independently of access and ID token rotation, recheck the latest identity eligibility after exchange, and retry once when the refresh grant changes.
- Make MCP authentication status reflect usable account grants, saved enterprise credentials, and completed connection failures.

## Testing

Extend regression coverage for enterprise sign-in failures and recovery, MCP authentication status, account grant identity across token refreshes, and retries after transient credential failures.

GitOrigin-RevId: eeac65f668d5d2d55e9d8bf4547fbcbdd6a6c42d

2026-10-21 10:40:59 +00:00

..

src

Fix enterprise MCP credential selection and reauthentication (#55859)

2026-10-21 10:40:59 +00:00

tests

Propagate authentication header failures before sending requests (#55607)

2026-10-20 15:43:19 +00:00

BUILD.bazel

[3/4] Add executor-backed RMCP HTTP client (#18583)

2026-04-22 17:38:04 -07:00

Cargo.toml

Upgrade Windows bindings to windows-sys 0.61.2 (#50058)

2026-10-01 18:05:05 +00:00