- Override wsHandshakeTimeout in 3 websocket tests that waited 30s each
- Make initialRetryDelay a package variable for faster retry tests
- Reduce time.Sleep calls across agent_test.go (1.5s->150ms, 3s->1s, etc.)
- Update Makefile with test-fast and test-short targets, add -count=1
- Update golang.org/x/crypto, x/net, x/sys to latest minors
- Fix TestWSDialDefaultPorts to use mocked dials instead of real TCP