Channing Conger ba2fb48319 Forward gRPC code-mode callbacks to session delegates (#38072) ...

## What changed

- Subscribe each gRPC code-mode session to nested tool calls and forward tool and notification callbacks to its delegate.
- Complete tool calls through the host while bounding oversized results and errors.
- Track callback ownership and cancellation so completed cells drain notifications, terminated cells cancel them, and shutdown revokes outstanding work.
- Validate callback identifiers, cell ownership, enabled tools, and pending callback limits without serializing independent callbacks or sessions.

## Testing

- Add integration and state tests for callback forwarding, completion ordering, cancellation, malformed callbacks, delegate panics, oversized results, and concurrent work.

GitOrigin-RevId: 005afbb90eea0eb77d746b930a1a96ca6dfcd4e7

2026-08-11 20:40:26 +00:00

..

host.rs

…

large_tool_delegate.rs

…

recording_delegate.rs

Forward gRPC code-mode callbacks to session delegates (#38072)

2026-08-11 20:40:26 +00:00