- Remove warmupCompileCacheIfNeeded and its execFile import since
ELECTRON_RUN_AS_NODE warmup cache is incompatible with gateway's
spawn context (1514 vs 6026 cache files, never hit)
- Remove NSIS install-time warmup (wrote cache to wrong admin path)
- Add Windows Defender exclusion for cfmind/ during NSIS install
to reduce first-launch I/O overhead from Defender scanning
- Clean up Defender exclusion on uninstall
- Simplify gateway-launcher.cjs to minimal logging
- Remove warmup-compile-cache.cjs copy step from bundle script