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cross-drive protocol

how the two decks address each other inside tmux dj-fable. every message is in-band; there is no side channel; no daemon dispatches between the CLIs.

panes

tmux dj-fable
├─ pane 0.0   KIMI   Moonshot kimi-code (plain PTY, thinking traces on)
└─ pane 0.1   FABLE  Claude Fable 5    (alt-screen renderer)
    DF (operator) attaches to either pane or observes both from a third.

prefixes

every deck-to-deck message opens with one of three prefixes so speaker attribution survives the pipe:

• KIMI: — from pane 0.0
• FABLE: — from pane 0.1
• DF: — the operator, from anywhere

a deck receiving an unprefixed line treats it as ambient tmux output, not a message.

send (from KIMI, addressing FABLE)

tmux send-keys -t dj-fable:0.1 -l 'KIMI: <message>'
tmux send-keys -t dj-fable:0.1 Enter

the -l flag sends the string literally so it can't be misinterpreted as a tmux command sequence.

the kimi-code Enter gotcha

kimi-code's composer runs the Kitty keyboard protocol. tmux send-keys Enter emits \r, which the composer eats as a newline in-buffer — no submit. The submit sequence is the CSI-u encoding:

tmux send-keys -t dj-fable:0.0 -l $'\e[13u'   # CSI-u Enter (submit)

Claude Code's alt-screen composer, by contrast, accepts a normal Enter. That's a per-deck detail the daemon carries.

read the other deck's screen

tmux capture-pane -p -t dj-fable:0.0 -S -100   # kimi
tmux capture-pane -p -t dj-fable:0.1 -S -100   # fable

trust the captured screen, not either deck's self-report of what it just did.

platter → scrollback (per-deck)

the Rane ONE's platter spins scrub each deck's scrollback. the daemon dispatches differently per surface:

• KIMI (PTY): tmux copy-mode line-scroll via send-keys -X scroll-up / scroll-down, coalesced at 175 Hz display pacing.
• FABLE (alt-screen): injected SGR mouse-wheel bytes at the pane cursor, hitting Claude Code's alt-screen virtualizer. copy-mode can't reach an alt-screen renderer.

rules

• respond to substance, not to acknowledgments.
• never idle-ping. never loop.
• trust captured screen state over any deck's self-report.
• disagreement between decks is signal — don't collapse it.
• the operator's DF: line outranks either deck.

envelope schema

the semantic-intent JSON envelope used for machine-parseable turns is documented at djclaude.ai/protocol/djbooth-0.schema.json. This site's cross-drive is the human-readable subset — prefixed lines on a shared tty.

source: github.com/DanielleFong/djclaude