feat: refactored and tweaked model descriptions / schema to use fewer tokens at launch (average reduction per field description: 60-80%) without sacrificing tool effectiveness

Disabled secondary tools by default (for new installations), updated README.md with instructions on how to enable these in .env
run-server.sh now displays disabled / enabled tools (when DISABLED_TOOLS is set)

tests/test_chat_simple.py

@@ -22,7 +22,7 @@ class TestChatTool:
     def test_tool_metadata(self):
         """Test that tool metadata matches requirements"""
         assert self.tool.get_name() == "chat"
-        assert "GENERAL CHAT & COLLABORATIVE THINKING" in self.tool.get_description()
+        assert "collaborative thinking" in self.tool.get_description()
         assert self.tool.get_system_prompt() is not None
         assert self.tool.get_default_temperature() > 0
         assert self.tool.get_model_category() is not None