Truth, observations and actors

The agent boundary is explicit: TruthState → WorldModel → AgentObservation → Decision → TransitionPlan.

prochain-world-model projects engine truth through a profile. prochain-agent-observer combines the result with a bounded candidate shortlist and session/partner context. prochain-agent-core defines provider-independent decisions. prochain-agent-rig makes model calls; prochain-actors manages individual memory and the optional local policy. The B2B orchestrator alone rotates turns and assigns decks.

Truth contains frame positions and internal gain. It is not serialized as an agent prompt. Each observable contains an optional value, source, timestamp and confidence. ClubBaseline exposes a 100 ms quantized position estimate, beat/bar/regular phrase indexes and analyzed library metadata. It masks faders and EQ. SimulatorFull additionally exposes simulated fader state; it is a diagnostic profile, not the default training input. Neither profile fabricates measured master headroom, vocals or semantic sections.

Forecasts sample library energy at +8/+16/+32/+64 bars. Beyond-track windows remain unknown. Regular 32-beat grid groups are not semantic verse/drop detection. These distinctions must survive into prompts and scoring.

Candidates are filtered for reviewed analysis, key/BPM, tempo ratio, phrase divisibility, sufficient duration and the previous two tracks. Scores currently use tempo, exact-key preference, energy fit and novelty. Spectral/vocal/embedding compatibility is not scored until trustworthy features exist. Each candidate supplies feasible 16/32-beat transition IDs; the model selects an ID rather than inventing timing.

Each actor gets its own last eight memory notes, recent set history and the previous actor's public handoff. Handoffs are musical messages, not private reasoning. Track metadata and handoffs are untrusted data, and model output still passes deterministic shortlist validation.

Future physical profiles need captured evidence per observable and control. ClubBaseline is a conservative simulation policy, not a declaration that any particular CDJ/XDJ supplies every field.