Channing Conger 2dc0791c7d Add opt-in gRPC over stdio for the code-mode host (#52723) ...

## What changed

- Add `grpc+stdio://` as a host transport and the disabled-by-default `code_mode_host_grpc` feature flag to select it.
- Share a lazy HTTP/2 channel and host process across code-mode sessions while keeping session state isolated.
- Use HTTP/2 keepalives to detect unresponsive hosts, kill and reap disconnected children, and spawn a fresh host on reconnect. Exit the host when its stdio connection closes.

## Testing

Add coverage for shared-host session isolation, host exit on stdin EOF, and recovery after an unresponsive host is reaped. Exercise nested tool calls with both legacy stdio and gRPC stdio, asserting that the feature flag selects the expected transport.

GitOrigin-RevId: 31389d8540de236b8e0571d3c24e29e117b75c4a

2026-10-09 23:26:34 +00:00

..

src

Add opt-in gRPC over stdio for the code-mode host (#52723)

2026-10-09 23:26:34 +00:00

tests

Preserve code mode cancellation during output serialization (#52685)

2026-10-09 20:01:48 +00:00

BUILD.bazel

Add Bazel release staging archives (#51850)

2026-10-07 22:11:14 +00:00

Cargo.toml

Enforce application network policy for AWS auth and telemetry (#47408)

2026-09-23 00:47:34 +00:00