test(e2e): give Claude a long-path config dir so the IDE server cannot abort - #718
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… abort On Windows runners os.tmpdir() is an 8.3 short path (C:\Users\RUNNER~1\...). The mock's CLAUDE_CONFIG_DIR inherited it, and the Claude extension, which Claude installs into the IDE server mid-test, watches that folder from the server process. libuv before 1.53.0 asserts on the first event in a short-path watched directory (libuv#5010), so the whole IDE server aborted and agent-turn failed with "No Claude session is running". Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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e2e/agent-mock.ts: resolve the mock'sCLAUDE_CONFIG_DIRwithrealpathSync.native, so a Windows runner's 8.3 short temp path (C:\Users\RUNNER~1\...) becomes its long form.agent-turn.e2e.tsfailure on Windows ("No Claude session is running", e.g. runs 36478259567 and 36472837866): Claude installs the Claude Code extension into the IDE server mid-test; the extension watchesCLAUDE_CONFIG_DIRfrom the server process, and libuv < 1.53.0 asserts (!_wcsnicmp(filename, dir, dirlen), fs-event.c:72) on the first event in a short-path watched directory (libuv#5010), aborting the whole server (exit 0xC0000409).fs.watchon the short path aborts, therealpathSync.nativeform works. No Node release bundles libuv 1.53.0 yet (deps: update libuv to 1.53.0 nodejs/node#66282 is open).