fix(codex): align cliproxy guidance with runtime behavior

tests/unit/commands/help-command-parity.test.ts

@@ -81,7 +81,8 @@ describe('help command parity', () => {
         'Fastest path: turn on the channel, save the token if needed, then run ccs.'
       )
     ).toBe(true);
-    expect(rendered.includes('Not supported for ccs glm')).toBe(true);
+    expect(rendered.includes('ccs codex')).toBe(true);
+    expect(rendered.includes('ccs --target codex')).toBe(true);
     expect(
       rendered.includes('Current-process TELEGRAM_BOT_TOKEN / DISCORD_BOT_TOKEN also work')
     ).toBe(true);

tests/unit/targets/codex-runtime-integration.test.ts

@@ -278,6 +278,22 @@ process.exit(0);
     expect(readLoggedCodexCalls(codexArgsLogPath)).toEqual([['--version']]);
   });
 
+  it('fails with a clean CLI error when ccsxp receives a malformed --target flag', () => {
+    if (process.platform === 'win32') return;
+
+    const result = runCcsxpAlias(['--target'], {
+      ...process.env,
+      CI: '1',
+      NO_COLOR: '1',
+      CCS_HOME: tmpHome,
+      CCS_CODEX_PATH: fakeCodexPath,
+    });
+
+    expect(result.status).toBe(1);
+    expect(result.stderr).toContain('[X] --target requires a value (claude, droid, codex)');
+    expect(result.stderr).not.toContain('at parseTargetFlags');
+  });
+
   it('passes ccs codex --target codex --version through to the native Codex binary', () => {
     if (process.platform === 'win32') return;
 

tests/unit/web-server/codex-dashboard-service.test.ts

@@ -234,6 +234,32 @@ wire_api = "responses"
     expect(diagnostics.warnings.some((warning) => warning.includes('missing env_key'))).toBe(true);
   });
 
+  it('does not warn for built-in openai provider without a custom model_providers entry', async () => {
+    fs.writeFileSync(path.join(codexHome, 'config.toml'), 'model_provider = "openai"\n');
+
+    const diagnostics = await getCodexDashboardDiagnostics();
+
+    expect(diagnostics.warnings.some((warning) => warning.includes('missing from [model_providers]'))).toBe(
+      false
+    );
+  });
+
+  it('allows custom providers that use requires_openai_auth without env_key warnings', async () => {
+    fs.writeFileSync(
+      path.join(codexHome, 'config.toml'),
+      `model_provider = "corp-openai"
+
+[model_providers.corp-openai]
+base_url = "https://example.test/v1"
+requires_openai_auth = true
+`
+    );
+
+    const diagnostics = await getCodexDashboardDiagnostics();
+
+    expect(diagnostics.warnings.some((warning) => warning.includes('missing env_key'))).toBe(false);
+  });
+
   it('summarizes granular approval policies without flattening them to null', async () => {
     fs.writeFileSync(
       path.join(codexHome, 'config.toml'),