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.

tests/HSchool.Content.Tests/CalendarTests.cs

@@ -86,6 +86,52 @@ public class CalendarTests
         Assert.Equal(DaySlot.BreakAfter(2), slot);
     }
 
+    [Fact]
+    public void NextWorkMorning_FromSaturdayLandsOnMondaySix()
+    {
+        var catalog = LoadVanilla();
+        var next = SchoolDay.NextWorkMorning(catalog, new DateTime(2012, 4, 7, 10, 0, 0, DateTimeKind.Utc), weekDays: 5);
+
+        Assert.Equal(new DateTime(2012, 4, 9, 6, 0, 0, DateTimeKind.Utc), next);
+    }
+
+    [Fact]
+    public void NextWorkMorning_FromTuesdayNightLandsOnThatMorning()
+    {
+        var catalog = LoadVanilla();
+        var next = SchoolDay.NextWorkMorning(catalog, new DateTime(2012, 4, 3, 3, 0, 0, DateTimeKind.Utc), weekDays: 5);
+
+        Assert.Equal(new DateTime(2012, 4, 3, 6, 0, 0, DateTimeKind.Utc), next);
+    }
+
+    [Fact]
+    public void NextWorkMorning_FromTuesdayEveningLandsOnWednesday()
+    {
+        var catalog = LoadVanilla();
+        var next = SchoolDay.NextWorkMorning(catalog, new DateTime(2012, 4, 3, 22, 0, 0, DateTimeKind.Utc), weekDays: 5);
+
+        Assert.Equal(new DateTime(2012, 4, 4, 6, 0, 0, DateTimeKind.Utc), next);
+    }
+
+    [Fact]
+    public void InWorkWindow_SevenOnAWorkday_IsAlreadyOpen()
+    {
+        var catalog = LoadVanilla();
+        var seven = new DateTime(2012, 4, 3, 7, 0, 0, DateTimeKind.Utc);
+
+        Assert.True(SchoolDay.IsWorkday(catalog, seven, weekDays: 5));
+        Assert.True(SchoolDay.InWorkWindow(catalog, seven, weekDays: 5));
+    }
+
+    [Fact]
+    public void InWorkWindow_DoesNotNeedTeachers()
+    {
+        var catalog = LoadVanilla();
+        var morning = new DateTime(2012, 4, 3, 10, 0, 0, DateTimeKind.Utc);
+
+        Assert.True(SchoolDay.InWorkWindow(catalog, morning, weekDays: 5));
+    }
+
     [Fact]
     public void Subject_UnknownRoom_FailsTheCatalog()
     {