The log stopped at run 10's headline (boxes reach each other). Three
runs later the arc is closed and RUNS.md should say so:
- run 11 (45/2): A3 re-answered with the fixed probe — BLOCKED,
security.port_isolation; both FAILs were the drill's own empty-host
assumption
- run 12 (46/0): first zero-failure run
- run 13 (47/0): full teardown → rebuild → drill from a bare host,
pinned resolver built from scratch on a Tailscale host
Answer table updated (A3/A4 show fixed + re-measured state), headline
flipped to match, traps 13–15 added (TTY stdin under timeout, the
gateway-ping false alarm, demanding an empty host), run history gains
the three rows and a closing note.
