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## Why `openai/openai#947613` adds `X-Codex-Rate-Limit-Reached-Type` for Codex workspace credit-depletion and spend-cap responses. The CLI currently reads the adjacent promo header but otherwise renders generic usage-limit copy, so those responses do not explain the workspace-specific action the user needs to take. Backend dependency: https://github.com/openai/openai/pull/947613 ## What Changed - Parse `X-Codex-Rate-Limit-Reached-Type` in the usage-limit error handling path alongside `x-codex-promo-message`. - Keep the header value parsing with the shared `RateLimitReachedType` enum. - Carry the parsed type on `UsageLimitReachedError` and render client-owned copy for the four workspace owner/member credit and spend-cap values. - Preserve existing promo and plan-based text for absent, generic, or unknown header values. - Keep the existing TUI workspace-owner nudge state path unchanged; the response header only selects the displayed error string. - Add focused display coverage for all specific type values and the generic fallback case. ## Test Plan - Added `usage_limit_reached_error_formats_rate_limit_reached_types` coverage. - Not run manually, per request; CI runs validation on the pushed commit.
codex-protocol
This crate defines the "types" for the protocol used by Codex CLI, which includes both "internal types" for communication between codex-core and codex-tui, as well as "external types" used with codex app-server.
This crate should have minimal dependencies.
Ideally, we should avoid "material business logic" in this crate, as we can always introduce Ext-style traits to add functionality to types in other crates.