Phase 1: Repository & Infrastructure Setup

- Renamed directories: codex-rs -> llmx-rs, codex-cli -> llmx-cli
- Updated package.json files:
  - Root: llmx-monorepo
  - CLI: @llmx/llmx
  - SDK: @llmx/llmx-sdk
- Updated pnpm workspace configuration
- Renamed binary: codex.js -> llmx.js
- Updated environment variables: CODEX_* -> LLMX_*
- Changed repository URLs to valknar/llmx

🤖 Generated with Claude Code

llmx-rs/exec/tests/suite/output_schema.rs

@@ -0,0 +1,63 @@
+#![cfg(not(target_os = "windows"))]
+#![allow(clippy::expect_used, clippy::unwrap_used)]
+
+use core_test_support::responses;
+use core_test_support::test_codex_exec::test_codex_exec;
+use serde_json::Value;
+use wiremock::matchers::any;
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn exec_includes_output_schema_in_request() -> anyhow::Result<()> {
+    let test = test_codex_exec();
+
+    let schema_contents = serde_json::json!({
+        "type": "object",
+        "properties": {
+            "answer": { "type": "string" }
+        },
+        "required": ["answer"],
+        "additionalProperties": false
+    });
+    let schema_path = test.cwd_path().join("schema.json");
+    std::fs::write(&schema_path, serde_json::to_vec_pretty(&schema_contents)?)?;
+    let expected_schema: Value = schema_contents;
+
+    let server = responses::start_mock_server().await;
+    let body = responses::sse(vec![
+        responses::ev_response_created("resp1"),
+        responses::ev_assistant_message("m1", "fixture hello"),
+        responses::ev_completed("resp1"),
+    ]);
+    let response_mock = responses::mount_sse_once_match(&server, any(), body).await;
+
+    test.cmd_with_server(&server)
+        .arg("--skip-git-repo-check")
+        // keep using -C in the test to exercise the flag as well
+        .arg("-C")
+        .arg(test.cwd_path())
+        .arg("--output-schema")
+        .arg(&schema_path)
+        .arg("-m")
+        .arg("gpt-5")
+        .arg("tell me a joke")
+        .assert()
+        .success();
+
+    let request = response_mock.single_request();
+    let payload: Value = request.body_json();
+    let text = payload.get("text").expect("request missing text field");
+    let format = text
+        .get("format")
+        .expect("request missing text.format field");
+    assert_eq!(
+        format,
+        &serde_json::json!({
+            "name": "codex_output_schema",
+            "type": "json_schema",
+            "strict": true,
+            "schema": expected_schema,
+        })
+    );
+
+    Ok(())
+}