fix tests

Author: SentienceDEV

sentience/tools/__init__.py

@@ -2,7 +2,7 @@
 Tool registry for LLM-callable tools.
 """
 
-from .context import BackendCapabilities, ToolContext
+from .context import BackendCapabilities, ToolContext, UnsupportedCapabilityError
 from .defaults import register_default_tools
 from .filesystem import FileSandbox, register_filesystem_tools
 from .registry import ToolRegistry, ToolSpec
@@ -13,6 +13,7 @@
     "ToolContext",
     "ToolRegistry",
     "ToolSpec",
+    "UnsupportedCapabilityError",
     "register_default_tools",
     "register_filesystem_tools",
 ]