test(codex-link): use host path separators in bridge startup checks

apps/desktop/electron/codex-link.test.ts

@@ -1,4 +1,5 @@
 import { describe, expect, it } from 'vitest'
+import path from 'node:path'
 
 import { CODEX_BRIDGE_START_BUDGET_MS, type CodexLinkDeps, type CodexLinkPaths, createCodexLink } from './codex-link'
 import {
@@ -21,7 +22,7 @@ const PATHS: CodexLinkPaths = {
   codexConfig: 'D:\\home\\.codex\\config.toml'
 }
 
-const BRIDGE_JSON = `${PATHS.bridgeHome}\\bridge.json`
+const BRIDGE_JSON = path.join(PATHS.bridgeHome, 'bridge.json')
 const STATUS_OK = { ok: true, surum: CODEX_BRIDGE_VERSION, ide_durum: 'tamam', ide_model: 7, ozet: true }
 const USER_CONFIG = 'model = "gpt-6"\r\n\r\n[features]\r\nweb = true\r\n'