Fix websocket pattern + improve beacon override logic to prevent false positives/negatives

Fix false positives: high-confidence legitimate patterns no longer overridden by beacon indicators

Add machine-readable output fields for scripting (connections_analyzed, suspicious_connections, iocs, time_range, destination_summary)

Add parsers for syslog, Windows firewall, CSV, and Graylog formats

Fix log parsing: JSON arrays, Zeek format, and beacon detection priority

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