fix(AGENTS.md) Clearer test instructions

AGENTS.md

@@ -14,11 +14,12 @@ In the codex-rs folder where the rust code lives:
 - When writing tests, prefer comparing the equality of entire objects over fields one by one.
 - When making a change that adds or changes an API, ensure that the documentation in the `docs/` folder is up to date if applicable.
 
-Run `just fmt` (in `codex-rs` directory) automatically after making Rust code changes; do not ask for approval to run it. Before finalizing a change to `codex-rs`, run `just fix -p <project>` (in `codex-rs` directory) to fix any linter issues in the code. Prefer scoping with `-p` to avoid slow workspace‑wide Clippy builds; only run `just fix` without `-p` if you changed shared crates. Additionally, run the tests:
+## Validating changes
+Run `just fmt` (in `codex-rs` directory) automatically after making Rust code changes; do not ask for approval to run it. Additionally, run the tests for the specific project(s) that changed. For example, if changes were made in `codex-rs/tui`, run `cargo test -p codex-tui`.
 
-1. Run the test for the specific project that was changed. For example, if changes were made in `codex-rs/tui`, run `cargo test -p codex-tui`.
-2. Once those pass, if any changes were made in common, core, or protocol, run the complete test suite with `cargo test --all-features`.
-   When running interactively, ask the user before running `just fix` to finalize. `just fmt` does not require approval. project-specific or individual tests can be run without asking the user, but do ask the user before running the complete test suite.
+Before finalizing a change to `codex-rs`, run `just fix -p <project>` (in `codex-rs` directory) to fix any linter issues in the code. Prefer scoping with `-p` to avoid slow workspace‑wide Clippy builds; only run `just fix` without `-p` if you changed shared crates.
+
+Once those pass, if significant changes were made in common, core, or protocol, suggest running the complete test suite with `cargo test --all-features`as a next step
 
 ## TUI style conventions