- Add make test-integration* commands
- Add SKIP_TESTS=true fast build flag
- Add 'Comments standard' section referencing docs/commenting-standard.md
- Add 'Known gotchas' section with 6 non-obvious issues:
* go.work build context must include both sentinel + correlator
* YAML does not expand env vars in Go (hardcode DSN)
* REGEXP_TREE dict requires >=1 rule or inserts fail
* pcap only captures non-loopback traffic
* ClickHouse init needs 120s timeout
* RPM builds must use Rocky Linux (libpcap.so.1 vs .so.0.8)
* FLAT() layout requires numeric keys (use COMPLEX_KEY_HASHED for strings)
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>