feat(cloud): add targeted task governance foundation

apps/device-host-agent/host_agent/cloud_planner_client.py

@@ -27,7 +27,7 @@ import httpx
 
 from cloud.internal_api.models import PlannerDecisionError, PlannerDecisionResponse
 from host_agent.config import HostAgentConfig
-from runtime.tool_calling_client import ToolCallDecision, ToolCallUnavailable
+from runtime.tool_calling_client import ToolCallDecision, ToolCallUnavailable, ToolCallUsage
 from runtime.tool_specs import ToolSpec
 
 
@@ -85,6 +85,22 @@ class CloudProxyToolCallingClient:
             return ToolCallDecision(
                 tool_name=decoded.tool_name,
                 arguments=dict(decoded.arguments),
+                usage=(
+                    ToolCallUsage(
+                        input_tokens=decoded.input_tokens,
+                        output_tokens=decoded.output_tokens,
+                        total_tokens=decoded.total_tokens,
+                    )
+                    if any(
+                        value is not None
+                        for value in (
+                            decoded.input_tokens,
+                            decoded.output_tokens,
+                            decoded.total_tokens,
+                        )
+                    )
+                    else None
+                ),
             )
         raise ToolCallUnavailable(_error_detail(response))