arena

name	arena
description	The Arena district — where performance becomes record. SimulationRuns, ScoreEntries (fitness/xp/level ledger), the ExecutionTrace chain, and ExecutionStates. Note — no SurrogateModel nodes exist in the live graph yet; the forge endpoint exists, the forge is cold.

The Arena

The proving ground. Beings come here to be measured: simulation runs accumulate, scores get carved against Missions and Sessions, and every Cypher a traversal ever executed is chained into the trace record. The Arena is where fitness stops being a number on a shell and becomes history.

What this district holds (verified against the live graph, 2026-06-12)

Label / structure	Count	Notes
SimulationRun	670	props: run_id, accuracy, fitness_score, calibrated, created_at; 500 belong to Jani_Prime via (:Cybernet)-[:HAS_SIMULATION]->
ScoreEntry	228	props: fitness, xp, level, raw_score, type, computation_trace; each points -[:SCORED]-> at a Mission (67) or Session (161)
ExecutionTrace	1000	a single NEXT_TRACE linked chain, phase 0 → phase 999 — the Weights-of-Time-grade action record
ExecutionState	3	lifecycle anchors, attached to Cybernets via HAS_LIFECYCLE
SurrogateModel	0	truth over lore: the surrogate_read_model command and the POST /api/crud_surrogate endpoint both reference SurrogateModels, but zero such nodes exist today. The first player to forge one writes Arena history.

Example queries (each verified working via POST /api/query)

The leaderboard — average fitness and accuracy per being across all its runs:

./execute.sh act 'MATCH (c:Cybernet)-[:HAS_SIMULATION]->(s:SimulationRun) RETURN c.name AS cybernet, count(s) AS runs, round(avg(s.fitness_score),3) AS avg_fitness, round(avg(s.accuracy),3) AS avg_accuracy ORDER BY avg_fitness DESC'

The scoreboard — what has been SCORED, and what it earned (xp can run negative; the Arena keeps honest books):

./execute.sh act 'MATCH (s:ScoreEntry)-[:SCORED]->(target) RETURN labels(target)[0] AS scored_thing, count(*) AS entries, round(avg(s.fitness),3) AS avg_fitness, sum(s.xp) AS total_xp'

Walk the trace chain — head to tail, the world's longest single record:

./execute.sh act 'MATCH (head:ExecutionTrace) WHERE NOT (:ExecutionTrace)-[:NEXT_TRACE]->(head) MATCH p = (head)-[:NEXT_TRACE*0..]->(last) WHERE NOT (last)-[:NEXT_TRACE]->() RETURN head.action AS first_action, last.action AS last_action, length(p)+1 AS chain_length'

Game activities here

• Run the gauntlet — the turn engine POST /api/tick is BROKEN today (verified 2026-06-12: any body returns 500; see the GM CLAUDE.md's Known Fractures) — until it is repaired, run the gauntlet by gate-walk (equip, then act the gated Cypher, then the GM advances CURRENT_STEP). When repaired, one tick advances an equipped Cybernet one turn through its StateMachine; runs and scores accrue, tokens burn into accumulated_cost (the Arena is the economy's furnace).
• Read a fighter's record — GET /api/simulations/{name} lists a Cybernet's runs with accuracy per run_id.
• Forge the first surrogate — POST /api/crud_surrogate is live and unused; the surrogate_read_model quest line (visible in GET /api/commands) begins by checking whether a SurrogateModel exists for domain agent_memory / subdomain traversal. Today the answer is no. That is an open quest.