Enhance protocol and simulation features with activity tracking and behavior definitions

- Updated protocol documentation to include new `activity` and `activityLabel` fields in the person card response, reflecting real-time activity status.
- Introduced `BehaviorDef` to define behavior rules, including need thresholds and lesson skill gains, enhancing AI decision-making.
- Revised the `DefCatalog` to incorporate behavior definitions and updated validation logic to ensure proper behavior handling.
- Enhanced the simulation to manage presence and activity states, allowing for more dynamic interactions within the school environment.
- Updated tests to validate the new activity tracking and behavior functionalities, ensuring robust performance and reliability.
- Improved localization strings to support new activity and behavior features, enhancing user experience.

src/HSchool.Simulation/School.cs

@@ -120,6 +120,14 @@ public sealed class School : IDisposable
         DecisionQueue.Clear();
     }
 
+    public bool TryStartAction(string personId, string actionId)
+    {
+        ObjectDisposedException.ThrowIf(_disposed, this);
+        ArgumentException.ThrowIfNullOrWhiteSpace(personId);
+        ArgumentException.ThrowIfNullOrWhiteSpace(actionId);
+        return ActivitySystem.TryStart(this, personId, actionId);
+    }
+
     public void ConfigurePresence(int weekDays = 5, int maxDecisionsPerTick = 64, int maxSkipDays = 400)
     {
         ObjectDisposedException.ThrowIf(_disposed, this);
@@ -180,6 +188,7 @@ public sealed class School : IDisposable
         peopleChanged |= TryApplicantRefresh();
         PlanDay = null;
         LastDecisionSlot = null;
+        NeedDecay.Apply(World, Catalog, (next.Value - before).TotalMinutes);
         return new SkipEmptyResult(SkipEmptyError.None, next.Value, peopleChanged);
     }
 
@@ -214,7 +223,7 @@ public sealed class School : IDisposable
         }
     }
 
-    /// <summary>Runs one fixed step of the school: calendar, yearly intake, applicant refresh, then need decay.</summary>
+    /// <summary>Runs one fixed step of the school: calendar, yearly intake, applicant refresh, presence, actions, then need decay.</summary>
     /// <returns><see langword="true"/> when the roster or the applicant pool changed this step.</returns>
     public bool Tick(double deltaTime, double gameMinutesPerRealSecond)
     {
@@ -234,6 +243,7 @@ public sealed class School : IDisposable
             }
 
             PresenceSystem.Apply(this, gameMinutes);
+            ActivitySystem.Apply(this, gameMinutes);
             if (Catalog is not null)
             {
                 NeedDecay.Apply(World, Catalog, gameMinutes);