Baby Den Den Mushi Short Range Snail Species Debut

Status: confirmed · Technique: sbs-leak + world-building-extension

The seed

Canonizes the three-species snail taxonomy that anchors every forward-canon snail-radio set-piece.
The Black Transponder Snail as listening device is the most load-bearing detail — pre-loads every wire-tap / eavesdrop / surveillance beat (CP9, Marine Intelligence, World Government interception).
The Mr.-3-style striped-cap snail on p. 19 also installs the snail-cap-design-encodes-owner-faction visual grammar — every snail in the series from this point onward wears its owner’s faction-aesthetic.