Enhance school day structure and decision-making for lunch breaks

- Updated `ai.md` to clarify the mechanics of hunger restoration and the importance of lunch breaks in the school schedule.
- Revised `schedule.md` to detail the new lunch break structure, allowing for separate sittings for different grade levels.
- Enhanced `Decision.cs` and `DecisionPlanner.cs` to incorporate logic for lunch breaks, ensuring that students only leave lessons during their designated lunch windows.
- Updated `DayFrameDef` and related classes to support multiple lunch breaks and validate their configurations.
- Adjusted tests to validate the new decision-making logic regarding lunch breaks and hunger management, ensuring robust functionality.
- Improved localization strings to reflect changes in the school day structure and lunch functionalities.

tests/HSchool.Simulation.Tests/NeedDecayTests.cs

@@ -32,7 +32,7 @@ public class NeedDecayTests
     }
 
     [Fact]
-    public void Sleep_ReturnsToMaxOffCampus()
+    public void SleepAndHunger_ReturnToMaxOffCampus()
     {
         var catalog = VanillaCatalog();
         var world = World.Create();
@@ -50,8 +50,9 @@ public class NeedDecayTests
             var query = new QueryDescription().WithAll<PersonNeeds>();
             world.Query(in query, (ref PersonNeeds needs) =>
             {
+                // Both are restored за кадром: the day at home covers a night and meals alike.
                 Assert.Equal(catalog.Needs["Sleep"].Max, needs.Values["Sleep"]);
-                Assert.Equal(0.4f, needs.Values["Hunger"]);
+                Assert.Equal(catalog.Needs["Hunger"].Max, needs.Values["Hunger"]);
             });
         }
         finally