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Cache executor metadata from initialization (#40343)

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## What changed

- Include `environmentInfo` in the exec-server `initialize` response and seed the Rust client's metadata cache from it.
- Fall back to one lazy `environment/info` request when connecting to older servers that omit initialization metadata, then share the cached result across client clones and session recovery.
- Keep app-server `environment/info` requests uncached so they continue to probe the executor.

## Testing

- Cover initialization metadata, the legacy-server fallback, shared caching, accepted WebSocket environments, and repeated uncached app-server probes.

GitOrigin-RevId: 380132d9db183998d73e8c6b0954e4d70c7e8406
This commit is contained in:
cgst-oai
2026-08-24 06:43:07 +00:00
committed by copyberry
parent 068c49f075
commit 2df6705423
14 changed files with 249 additions and 13 deletions
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codex-rs/exec-server-protocol/src/protocol.rs
+4
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@@ -83,6 +83,10 @@ pub struct InitializeParams {
#[serde(rename_all = "camelCase")]
pub struct InitializeResponse {
pub session_id: String,
/// Executor metadata at initialization, with the same shape as `environment/info`.
// TODO: Make this required once all supported exec-server versions return environmentInfo.
#[serde(default, skip_serializing_if = "Option::is_none")]
pub environment_info: Option<EnvironmentInfo>,
}
/// Information about an execution/filesystem environment.