Add EventDef notices, morning and lesson bells, and info toasts.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/HSchool.Server/mods/core/localizations/en.jsonc

@@ -224,5 +224,8 @@
   "LessonNoTeacher": "lesson without a teacher: {0}",
   "LessonCold": "too cold in class: {0}",
   "LessonNoTextbook": "no textbook: {0}",
+  "DayStarted": "The day has started",
+  "LessonStarted": "A lesson has started",
+  "GenerationFailed": "Portrait generation failed",
   "core": "Core",
 }

src/HSchool.Server/mods/core/localizations/ru.jsonc

@@ -224,5 +224,8 @@
   "LessonNoTeacher": "урок без учителя: {0}",
   "LessonCold": "замёрз на уроке: {0}",
   "LessonNoTextbook": "нет учебника: {0}",
+  "DayStarted": "Начало дня",
+  "LessonStarted": "Начало урока",
+  "GenerationFailed": "Не удалось нарисовать портрет",
   "core": "Базовая игра",
 }