Sprint 2 Etapas 1-2: modelo recursos utilizationMinutes+units, Dexie v3, ActivityPanel wow

src/persistence/db.ts

@@ -41,6 +41,44 @@ export class ProcessCostDb extends Dexie {
           if (proc.automationInvestment === undefined) proc.automationInvestment = 0
         })
       })
+
+    // Sprint 2: migra ActivityResourceAssignment.utilizationPercent → utilizationMinutes + units.
+    // Los stores no cambian — assignments están embebidos en Activity, no son tabla propia.
+    this.version(3)
+      .stores({
+        processes: 'id, name, updatedAt',
+        activities: 'id, processId, bpmnElementId',
+        gateways: 'id, processId, bpmnElementId',
+        resources: 'id, processId, name',
+        simulations: 'id, processId, executedAt',
+      })
+      .upgrade(async (tx) => {
+        await tx.table('activities').toCollection().modify((act) => {
+          if (!Array.isArray(act.assignedResources)) {
+            act.assignedResources = []
+            return
+          }
+          act.assignedResources = act.assignedResources.map((assignment: Record<string, unknown>) => {
+            if ('utilizationPercent' in assignment) {
+              // Heurística: minutos = round(executionTimeMinutes × utilizationPercent)
+              // Si executionTimeMinutes no está disponible o es 0, usar 0 (conservador)
+              const execMinutes = typeof act.executionTimeMinutes === 'number' ? act.executionTimeMinutes : 0
+              const utilizationMinutes = Math.round(execMinutes * (assignment.utilizationPercent as number))
+              return { resourceId: assignment.resourceId, utilizationMinutes, units: 1 }
+            }
+            if ('utilizationMinutes' in assignment) {
+              // Ya está en nuevo formato (idempotencia)
+              return {
+                resourceId: assignment.resourceId,
+                utilizationMinutes: assignment.utilizationMinutes ?? 0,
+                units: assignment.units ?? 1,
+              }
+            }
+            // Fallback defensivo
+            return { resourceId: assignment.resourceId, utilizationMinutes: 0, units: 1 }
+          })
+        })
+      })
   }
 }