cassirer-openai 0fd1cd8d99 Add opt-in overhead timing to code-mode responses (#46288) ...

## Why

Code-mode responses show host duration without exposing time spent outside the host, including app-server waiting.

## What changed

- Add `features.code_mode.experimental_show_cell_overhead`, disabled by default, to show handler duration, host duration, and their difference in `exec` and `wait` response headers.
- Reuse the completed handler measurement from tool-call logging, excluding dispatch waiting, and capture it even when logging is disabled.
- Preserve the existing timing format when the option is disabled or host timing is unavailable, and preserve boolean feature toggles when merging nested code-mode configuration.

## Testing

Add coverage for timing headers, zero and missing host measurements, negative rounding differences, content preservation, and configuration merging. Extend app-server tests across gRPC and stdio to verify timing includes post-host elicitation waiting, and add a response snapshot for successful execution and a failed wait.

GitOrigin-RevId: 929b84784d9c6077cf2b5927a90bd2d5f3870078

2026-09-17 19:34:45 +00:00

..

src

Add opt-in overhead timing to code-mode responses (#46288)

2026-09-17 19:34:45 +00:00

BUILD.bazel

build: run buildifier from just fmt (#28125)

2026-06-13 21:43:39 -07:00

Cargo.toml

Support configured credential providers across shell snapshots (#44072)

2026-09-09 06:04:59 +00:00