Separate from the v1 /add-whatsapp skill — v1 remains untouched.
Follows the v2 skill pattern (flat sections, defers to /manage-channels
for wiring). Covers Baileys auth, pairing code, QR code, and
documents the native adapter's features and limitations.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
