Two side-by-side tables fed from snapshot.scan_firehose: Top Ports (port +
24h hits) and Top Sources (IP + CC + hits). Below them a one-line muted
mono summary "Xk records · Yk sources · Z targets — last 24h." Tables, not
bar charts — operator wants to read the port number 22 / 3389, not stare
at a horizontal bar.
Port and IP and hit counts are mono with tabular-nums (digit alignment
matters). Country code stays sans (text label, not a number). Hover row
background var(--bg-row-hover) — subtle, no transform / no transition /
no theatre. Defensive empty-state — when snapshot has no scan_firehose
yet, tables render as empty (per ethos: no "no data" message).
PORT_ROW_LIMIT / SOURCE_ROW_LIMIT / THOUSAND / MILLION constants at module
scope (no inline magic). Renders in the right column as the bottom panel
per spec §11.1 column ordering.