Remove deprecated Codex SDK provider

Delete codex-agent.ts/test.ts/unit.test.ts and related files.
Codex MCP is now the only Codex provider, registered for both
"codex" and "codex-mcp" provider IDs in bootstrap.ts.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/server/src/server/agent/providers/codex-agent.unit.test.ts

@@ -1,28 +0,0 @@
-import { describe, expect, it } from "vitest";
-import { promises as fs } from "node:fs";
-import path from "node:path";
-import os from "node:os";
-
-import { readLatestTurnContextModel } from "./codex-agent.js";
-
-describe("readLatestTurnContextModel", () => {
-  it("returns the most recent turn_context model from rollout", async () => {
-    const dir = await fs.mkdtemp(path.join(os.tmpdir(), "codex-rollout-"));
-    const file = path.join(dir, "rollout.jsonl");
-    const lines = [
-      JSON.stringify({ type: "session_meta", payload: { id: "thread-1" } }),
-      JSON.stringify({
-        type: "turn_context",
-        payload: { model: "gpt-5.1-codex", cwd: "/tmp" },
-      }),
-      JSON.stringify({
-        type: "turn_context",
-        payload: { model: "gpt-5.2-codex", cwd: "/tmp" },
-      }),
-    ];
-    await fs.writeFile(file, lines.join("\n"), "utf8");
-
-    const model = await readLatestTurnContextModel(file);
-    expect(model).toBe("gpt-5.2-codex");
-  });
-});

packages/server/test-results-after.txt

@@ -1,16 +0,0 @@
-
-> @paseo/server@0.1.0 test
-> vitest run
-
-
- RUN  v3.2.4 /home/moboudra/dev/voice-dev/packages/server
-
-stdout | src/server/agent/providers/codex-agent.test.ts > CodexAgentClient (SDK integration) > responds with text
-[CodexAgentTest] Running single-turn acknowledgment test
-
-stdout | src/server/agent/providers/codex-agent.test.ts > CodexAgentClient (SDK integration) > emits tool or command events when writing a file
-[CodexAgentTest] Streaming file creation activity
-
-stdout | src/server/agent/providers/codex-agent.test.ts > CodexAgentClient (SDK integration) > emits Codex tool calls that hydrate into specific UI entries
-[CodexAgentTest] Streaming Codex run for tool call hydration test
-

packages/server/test-sdk-spawn.ts

@@ -1,34 +0,0 @@
-import { CodexAgentClient } from "@paseo/server/src/server/agent/providers/codex-agent.js";
-
-async function test() {
-  console.log("Creating CodexAgentClient...");
-  const client = new CodexAgentClient();
-
-  console.log("Creating session...");
-  const session = await client.createSession({
-    provider: "codex",
-    cwd: process.cwd(),
-    modeId: "full-access",
-  });
-
-  console.log("Session created:", session.id);
-  console.log("\nNow check ps to see which codex binary is running!\n");
-
-  // Run a simple prompt using stream to see all events
-  console.log("Running test prompt...");
-  console.log("Sleeping 30s - check ps for the args now!");
-  await new Promise((resolve) => setTimeout(resolve, 30000));
-
-  const events = session.stream('echo "test"');
-
-  for await (const event of events) {
-    if (event.type === "turn_completed") {
-      console.log("Turn completed");
-    }
-  }
-
-  await session.close();
-  console.log("Session closed");
-}
-
-test().catch(console.error);

plan.md

@@ -823,3 +823,22 @@ Build a new Codex MCP provider side‑by‑side with the existing Codex SDK prov
     4. ✅ No console errors (only React 19 deprecation warnings unrelated to Codex MCP)
     5. ✅ Verified file created on filesystem with correct content
   EVIDENCE: Playwright snapshots showing agent UI with tool calls, `cat /Users/moboudra/dev/voice-dev/codex-mcp-test.txt` output showing "Codex MCP E2E test successful", tool detail panel showing command/directory/exit code/output.
+
+- [x] **Deprecate**: Remove old Codex SDK provider completely.
+
+  The old `codex-agent.ts` is DEPRECATED. Codex MCP is now the only Codex provider.
+
+  **Tasks:**
+  1. Verify `bootstrap.ts` only registers `CodexMcpAgentClient` for "codex" provider
+  2. Delete `codex-agent.ts` (the old SDK provider)
+  3. Delete `codex-agent.test.ts` (the old SDK tests)
+  4. Remove any imports of `CodexAgentClient` from the codebase
+  5. Search for any remaining references to the old SDK provider and remove them
+  6. Run typecheck and tests to verify nothing is broken
+
+  **Acceptance criteria:**
+  - Only ONE Codex provider exists: `codex-mcp-agent.ts`
+  - No references to `CodexAgentClient` or `codex-agent.ts` in the codebase
+  - Typecheck passes
+  - All tests pass (no skipped tests for deprecated code)
+  - **Done (2025-12-25 15:42)**: WHAT: Deleted `packages/server/src/server/agent/providers/codex-agent.ts`, `packages/server/src/server/agent/providers/codex-agent.test.ts`, `packages/server/src/server/agent/providers/codex-agent.unit.test.ts`, `packages/server/test-sdk-spawn.ts`, `test-sdk-spawn.ts`, and `packages/server/test-results-after.txt`. Verified `bootstrap.ts:133-134` only registers `CodexMcpAgentClient` for both `codex` and `codex-mcp` providers. RESULT: Only `codex-mcp-agent.ts` and `codex-mcp-agent.test.ts` remain as Codex providers. Zero references to `CodexAgentClient` in `packages/` directory. EVIDENCE: `ls packages/server/src/server/agent/providers/codex*.ts` (only MCP files), `rg CodexAgentClient packages/` (no matches), `npm run typecheck --workspace=@paseo/server` (exit 0), `npm run test --workspace=@paseo/server` (90/92 passed; 2 failures in `claude-agent.test.ts:968` and `:1069` are pre-existing history file persistence issues unrelated to this change).

test-sdk-spawn.ts

@@ -1,34 +0,0 @@
-import { CodexAgentClient } from "@paseo/server/src/server/agent/providers/codex-agent.js";
-
-async function test() {
-  console.log("Creating CodexAgentClient...");
-  const client = new CodexAgentClient();
-
-  console.log("Creating session...");
-  const session = await client.createSession({
-    provider: "codex",
-    cwd: process.cwd(),
-    modeId: "full-access",
-  });
-
-  console.log("Session created:", session.id);
-  console.log("\nNow check ps to see which codex binary is running!\n");
-
-  // Run a simple prompt using stream to see all events
-  console.log("Running test prompt...");
-  console.log("Sleeping 30s - check ps for the args now!");
-  await new Promise((resolve) => setTimeout(resolve, 30000));
-
-  const events = session.stream('echo "test"');
-
-  for await (const event of events) {
-    if (event.type === "turn_completed") {
-      console.log("Turn completed");
-    }
-  }
-
-  await session.close();
-  console.log("Session closed");
-}
-
-test().catch(console.error);