Introduce automatic user UID extraction and optional --user-uid override, include user_uid and capture_source in exported JSON, and prepend UID to export filenames (falls back to unknown). Propagate detected protocol (tcp/udp) through live/libpcap parsing and accept TCP packets for UID detection; adjust libpcap filter to capture TCP as well. Update CLI flags (--copy-clipboard semantics, --user-uid), prompt user when UID is missing, and wire UID through mitmproxy and live capture flows. Bump package/exporter version to 0.1.3 and add tests for UID extraction and filename behavior.