Reduce symbol size for tests (#5389)

Test executables were huge because of detailed debugging symbols. Switch
to less rich debugging symbols.

.github/workflows/rust-ci.yml

@@ -201,7 +201,7 @@ jobs:
         # Tests take too long for release builds to run them on every PR.
         if: ${{ matrix.profile != 'release' }}
         continue-on-error: true
-        run: cargo nextest run --all-features --no-fail-fast --target ${{ matrix.target }}
+        run: cargo nextest run --all-features --no-fail-fast --target ${{ matrix.target }} --cargo-profile ci-test
         env:
           RUST_BACKTRACE: 1
 

codex-rs/Cargo.toml

@@ -79,8 +79,8 @@ codex-rmcp-client = { path = "rmcp-client" }
 codex-stdio-to-uds = { path = "stdio-to-uds" }
 codex-tui = { path = "tui" }
 codex-utils-json-to-toml = { path = "utils/json-to-toml" }
-codex-utils-readiness = { path = "utils/readiness" }
 codex-utils-pty = { path = "utils/pty" }
+codex-utils-readiness = { path = "utils/readiness" }
 codex-utils-string = { path = "utils/string" }
 core_test_support = { path = "core/tests/common" }
 mcp-types = { path = "mcp-types" }
@@ -257,6 +257,11 @@ strip = "symbols"
 # See https://github.com/openai/codex/issues/1411 for details.
 codegen-units = 1
 
+[profile.ci-test]
+debug = 1         # Reduce debug symbol size
+inherits = "test"
+opt-level = 0
+
 [patch.crates-io]
 # Uncomment to debug local changes.
 # ratatui = { path = "../../ratatui" }