Coverage Summary for Class: SnapshotModel (core.pipeline)

 // FILE: core/src/main/kotlin/core/pipeline/SnapshotModel.kt
 package core.pipeline
 
 import core.DaySnapshot
 import core.primitives.ActiveStatus
 import core.state.GameState
 
 /**
  * Snapshot construction model.
  *
  * ## Semantic Ownership
  * Answers: **What are the key metrics at day end?**
  *
  * ## Stability Gradient
  * STABLE: Pure extraction from state.
  *
  * ## Determinism
  * - No RNG usage. All inputs are explicit.
  *
  * ## Boundary Rules
  * - Must NOT emit events.
  * - Must NOT mutate state.
  */
 object SnapshotModel {
 
     /**
      * Creates a day-end snapshot from the current game state.
      *
      * @param state Current game state.
      * @param day Day index for the snapshot.
      * @return [DaySnapshot] with key metrics.
      */
     fun createDaySnapshot(state: GameState, day: Int): DaySnapshot {
         return DaySnapshot(
             day = day,
             revision = state.meta.revision,
             money = state.economy.moneyCopper,
             trophies = state.economy.trophiesStock,
             regionStability = state.region.stability,
             guildReputation = state.guild.reputation,
             inboxCount = state.contracts.inbox.size,
             boardCount = state.contracts.board.size,
             activeCount = state.contracts.active.count { it.status == ActiveStatus.WIP },
             returnsNeedingCloseCount = state.contracts.returns.count { it.requiresPlayerClose }
         )
     }
 }