Refactor configuration and enhance AI capabilities

Updated .env.example to improve clarity and added new configuration options for memory and reliability settings. Refactored main.py to streamline the bot's entry point and improved error handling. Enhanced README to reflect new features and command structure. Removed deprecated cmd_zip_skill and skills_creator modules to clean up the codebase. Updated AIClient and MemorySystem for better performance and flexibility in handling user interactions.

tests/test_personality_scope_priority.py

@@ -0,0 +1,44 @@
+from pathlib import Path
+
+from src.ai.personality import PersonalityProfile, PersonalitySystem, PersonalityTrait
+
+
+def _profile(name: str) -> PersonalityProfile:
+    return PersonalityProfile(
+        name=name,
+        description=f"{name} profile",
+        traits=[PersonalityTrait.FRIENDLY],
+        speaking_style="plain",
+    )
+
+
+def test_scope_priority_session_over_group_over_user_over_global(tmp_path: Path):
+    cfg = tmp_path / "personalities.json"
+    state = tmp_path / "personality_state.json"
+    system = PersonalitySystem(config_path=cfg, state_path=state)
+
+    system.add_personality("p_global", _profile("global"))
+    system.add_personality("p_user", _profile("user"))
+    system.add_personality("p_group", _profile("group"))
+    system.add_personality("p_session", _profile("session"))
+
+    assert system.set_personality("p_global", scope="global")
+    assert system.set_personality("p_user", scope="user", scope_id="u1")
+    assert system.set_personality("p_group", scope="group", scope_id="g1")
+    assert system.set_personality("p_session", scope="session", scope_id="g1:u1")
+
+    profile = system.get_active_personality(user_id="u1", group_id="g1", session_id="g1:u1")
+    assert profile is not None
+    assert profile.name == "session"
+
+    profile_no_session = system.get_active_personality(user_id="u1", group_id="g1", session_id="other")
+    assert profile_no_session is not None
+    assert profile_no_session.name == "group"
+
+    profile_user_only = system.get_active_personality(user_id="u1", group_id=None, session_id=None)
+    assert profile_user_only is not None
+    assert profile_user_only.name == "user"
+
+    profile_global = system.get_active_personality(user_id="u2", group_id=None, session_id=None)
+    assert profile_global is not None
+    assert profile_global.name == "global"