refactor: simplify AgeGroup enum and enhance normalization

Remove redundant ELIT variants from AgeGroup enum and implement case/spelling tolerant normalization function. The new normalize_age_group function handles case-insensitive matching and spelling variations (Elite/ELIT/Elit) while mapping to canonical enum values.

This reduces the enum from 15 to 13 entries while maintaining full backward compatibility.

myice/myice.py

@@ -102,8 +102,6 @@ class AgeGroup(str, Enum):
     u13p = "U13 (Prép)"
     u14ev = "U14 (Elite Vernets)"
     u14esmv = "U14 (Elite Sous-Moulin/Vergers)"
-    u14elsmv = "U14 (ELIT Sous-Moulin/Vergers)"
-    u14elv = "U14 (ELIT Vernets)"
     u15t = "U15 (Top)"
     u15a = "U15 (A)"
     u16e = "U16 (Elite)"
@@ -113,6 +111,38 @@ class AgeGroup(str, Enum):
     u21e = "U21 (ELIT)"
 
 
+def normalize_age_group(value: str) -> AgeGroup | None:
+    """Normalize age group string to handle case and spelling variations."""
+    import re
+
+    if not isinstance(value, str):
+        return None
+
+    def normalize_spelling(text: str) -> str:
+        """Normalize spelling variations of 'elit' to 'elite'."""
+        # Replace accented versions first
+        text = text.replace("élit", "elite")
+        # Use regex to replace "elit" with "elite" only when it's a complete word
+        # This avoids replacing "elit" within "elite"
+        text = re.sub(r"\belit\b", "elite", text)
+        return text
+
+    # Convert to lowercase for case-insensitive comparison
+    input_lower = value.lower()
+    input_normalized = normalize_spelling(input_lower)
+
+    for member in AgeGroup:
+        # Convert enum value to lowercase and normalize
+        member_lower = member.value.lower()
+        member_normalized = normalize_spelling(member_lower)
+
+        # Check for match
+        if member_normalized == input_normalized:
+            return member
+
+    return None
+
+
 class EventType(str, Enum):
     game = "game"
     practice = "practice"
@@ -396,9 +426,9 @@ def parse_schedule(
         data = json.loads(sanitized_content)
     # age_group filter
     if age_group:
-        events = [x for x in data if x["agegroup"] == age_group]
+        events = [x for x in data if normalize_age_group(x["agegroup"]) == age_group]
     else:
-        events = [x for x in data if x["agegroup"] in AgeGroup]
+        events = [x for x in data if normalize_age_group(x["agegroup"]) is not None]
     # event_type filter
     if event_type_filter:
         if event_type_filter.value == EventType.game:
@@ -438,7 +468,9 @@ def check_with_ai(
         sys.exit(1)
     with schedule_file.open("r") as f:
         schedule_data = json.load(f)
-    schedule_data = [x for x in schedule_data if x["agegroup"] in AgeGroup]
+    schedule_data = [
+        x for x in schedule_data if normalize_age_group(x["agegroup"]) is not None
+    ]
     for event in schedule_data:
         event["team"] = event["agegroup"].replace("(", "").replace(")", "")
         del event["agegroup"]