Enhance AI and simulation components with presence management and routing capabilities

- Introduced the `HSchool.Ai` project, responsible for routing, day plans, and presence management.
- Updated the `HSchool.Simulation` project to integrate with the new AI functionalities, improving decision-making and presence tracking.
- Added `travelMinutes` to room and territory definitions, ensuring accurate movement calculations within the simulation.
- Enhanced the `School` class to manage presence and implement empty-time skipping functionality.
- Updated documentation to reflect the new AI features and their impact on school simulation.
- Added tests for presence management and routing to ensure robust functionality and reliability.

src/HSchool.Simulation/GameClock.cs

@@ -50,6 +50,17 @@ public sealed class GameClock
 
     public static bool IsValidStartDate(DateTime date) => date >= MinStartDate && date <= MaxStartDate;
 
+    /// <summary>Empty-time skip. Not a tick — the calendar jumps to an instant already known to be legal.</summary>
+    public void JumpTo(DateTime time)
+    {
+        if (!IsValidStartDate(time))
+        {
+            throw new ArgumentOutOfRangeException(nameof(time), time, "Jump target is outside the supported range.");
+        }
+
+        Time = DateTime.SpecifyKind(time, DateTimeKind.Utc);
+    }
+
     /// <summary>
     /// Advances the calendar by one fixed step of <paramref name="realSeconds"/>, scaled by the
     /// base rate and the current speed. Does nothing while paused.