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# Advanced Mode — topologies

Advanced Mode (Control Panel) reveals the agent roster. Off — the default — is today's single-agent path: one Operator, byte-for-byte identical behavior.

## Valid stacks

Solo (1 Op) — the shipped default. Failsafe (1 Op + Supervisor) — "just make it work, efficiently": the Operator does the volume, the Supervisor catches structural blind spots and escalations. Parallel pair (2 Ops) — strict-partition parallelization: disjoint subtrees, each Operator working its own; a stalled node is enqueued to the shared work-stealing queue and the Operator moves on — nobody blocks. A temperature disparity between the two justifies genuinely different prognoses on the same stuck node. Full stack (2 Ops + Supervisor) — two small models in parallel plus the Supervisor for structural and idiosyncratic superflux.

Operators cap at 2. Coordination between them is an algorithm — the partition + queue engage automatically when a second Operator connects. It is not an agent, has no model, and costs no tokens.

Each role card carries its own on/off toggle and its own knob set, inside the card boundary. Knobs are per-agent because agents differ: a setting that enables a weak Operator can degrade a Supervisor.