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Michael Bolin
4e119a3b38
## Why `core/src/tools/spec.rs` still bundled a set of pure local-host tool builders with the orchestration that actually decides when those tools are exposed and which handlers back them. That made `codex-core` responsible for JSON/tool-shape construction that does not depend on session state, and it kept the `codex-tools` migration from taking a meaningfully larger bite out of `spec.rs`. This PR moves that reusable spec-building layer into `codex-tools` while leaving feature gating, handler registration, and runtime-coupled descriptions in `codex-core`. ## What changed - added `codex-rs/tools/src/local_tool.rs` for the pure builders for `exec_command`, `write_stdin`, `shell`, `shell_command`, and `request_permissions` - added `codex-rs/tools/src/view_image.rs` for the `view_image` tool spec and output schema so the extracted modules stay right-sized - rewired `codex-rs/core/src/tools/spec.rs` to call those extracted builders instead of constructing these specs inline - kept the `request_permissions` description source in `codex-core`, with `codex-tools` taking the description as input so the crate boundary does not grow a dependency on handler/runtime code - moved the direct constructor coverage for this slice from `codex-rs/core/src/tools/spec_tests.rs` into `codex-rs/tools/src/local_tool_tests.rs` and `codex-rs/tools/src/view_image_tests.rs` - updated `codex-rs/tools/README.md` to reflect that `codex-tools` now owns this local-host spec layer ## Test plan - `CARGO_TARGET_DIR=/tmp/codex-tools-local-host cargo test -p codex-tools` - `CARGO_TARGET_DIR=/tmp/codex-core-local-tools cargo test -p codex-core --lib tools::spec::` - `just argument-comment-lint` ## References - #15923 - #15928 - #15944 - #15953 - #16031 - #16047 - #16129 - #16132