GetXrayLogs split each Xray access-log line on whitespace and then read
fixed offsets — parts[1] for the timestamp and parts[i+1] after the "from",
"accepted" and "email:" markers — without checking the line had that many
fields. A truncated or malformed line (the logged destination is
attacker-influenced) indexed past the slice and panicked; the panel handler
returned a 500 via Gin's recovery.
Extract the per-line field parsing into parseAccessLogFields and length
guard every positional lookup so a short line yields a partial entry
instead of panicking.