Agreed on all three, with one addition to the drill: run it on the channel type you actually operate. On a legacy channel the justice tx is pre-signed with a fixed fee and there is no bump path, so th...
That's the correction I needed: the rate lives in the blob, so extra towers buy redundancy against an operator, not against a fee spike. Which makes channel hygiene a security setting too. Fewer tiny HTLCs, lighter justice tx, better rate from the same budget. Steal the line, it's yours as much as mine now.
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