Jennifer Zhao 806d9732c9 Report exec runtime resets before accepting further requests (#52825) ...

## Why

Replacing a gRPC code-mode runtime loses stored values and running cells. Silently continuing after reconnection hides that loss, while prior external tool operations may already have completed.

## What changed

- Capture the runtime generation when `execute` and `wait` calls are created. If recovery replaces it, reject those calls with an explicit reset error, including concurrent calls and calls first polled after recovery.
- Explain the lost state and advise inspecting prior tool results before retrying. Allow a fresh `exec` call to continue on the replacement runtime.
- Keep `terminate` from reopening the runtime so cleanup cannot hide a reset from the next request.

## Testing

Extend gRPC recovery tests to cover reset errors after host restarts, missing sessions, and route loss, rejection of queued calls, and successful fresh execution with cleared stored state.

GitOrigin-RevId: 914cab3bb45e30a3f3b2afacb5631e42b18e21b0

2026-10-10 08:51:21 +00:00

..

src

Report exec runtime resets before accepting further requests (#52825)

2026-10-10 08:51:21 +00:00

BUILD.bazel

Code mode on v8 (#15276)

2026-03-20 23:36:58 -07:00

Cargo.toml

Preserve per-session routing for gRPC code mode (#52381)

2026-10-09 02:50:59 +00:00