Rennie c45ea25ffb Allow subagents to request MCP elicitation input (#46877) ...

## Why

MCP requests requiring user input previously failed in subagents with guidance to ask the parent agent, blocking browser sign-in, form input, and interactive tool approval in the child thread.

## What changed

Remove the root-only MCP elicitation guard and `allow_user_interaction` plumbing so subagents can surface prompts and wait for responses under the existing approval policy and automatic review rules. Connector authentication can now return retry guidance after acceptance or preserve the original failure when declined.

Keep legacy tool approvals through `request_user_input` restricted to the root thread.

## Testing

Update unit and integration coverage for subagent prompt resolution, form responses, connector authentication acceptance and decline, automatic approval, strict review, and approval-policy updates on reused connections. Update the browser sign-in scenario snapshot to show the subagent continuing after an accepted response.

GitOrigin-RevId: c226fc6dfde724ed22b91dc04dd32bbc15245bee

2026-09-20 19:42:18 +00:00

..

src

Allow subagents to request MCP elicitation input (#46877)

2026-09-20 19:42:18 +00:00

tests

Add turn-start cloud plugin discovery to the MCP extension (#46572)

2026-09-19 02:07:58 +00:00

BUILD.bazel

Route hosted Apps MCP through extensions (#27191)

2026-06-09 22:44:16 +02:00

Cargo.toml

Add turn-start cloud plugin discovery to the MCP extension (#46572)

2026-09-19 02:07:58 +00:00