GET /playthroughs/:id/phone returns the directory of the phone node the
current node is wired to; POST /playthroughs/:id/dial resolves a number to
connect (advance to the wired dialogue), voicemail (known contact, no line
here), or not-in-service. Barricelli's note-board is wired to the phone node
and Glitch Hunter's decline returns to it. Frontend (inventory on the board)
is 2b.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>