Combat Backend & Data Models

- Implement Combat Service
- Implement Damage Calculator
- Implement Effect Processor
- Implement Combat Actions
- Created Combat API Endpoints

api/tests/test_session_service.py

@@ -18,8 +18,10 @@ from app.services.session_service import (
     SessionNotFound,
     SessionLimitExceeded,
     SessionValidationError,
-    MAX_ACTIVE_SESSIONS,
 )
+
+# Session limits are now tier-based, using a test default
+MAX_ACTIVE_SESSIONS_TEST = 3
 from app.models.session import GameSession, GameState, ConversationEntry
 from app.models.enums import SessionStatus, SessionType, LocationType
 from app.models.character import Character
@@ -116,7 +118,7 @@ class TestSessionServiceCreation:
     def test_create_solo_session_limit_exceeded(self, mock_db, mock_appwrite, mock_character_service, sample_character):
         """Test session creation fails when limit exceeded."""
         mock_character_service.get_character.return_value = sample_character
-        mock_db.count_documents.return_value = MAX_ACTIVE_SESSIONS
+        mock_db.count_documents.return_value = MAX_ACTIVE_SESSIONS_TEST
 
         service = SessionService()
         with pytest.raises(SessionLimitExceeded):