Merge remote-tracking branch 'origin/staging' into feat/multi-tenant-isolation-phases-2-4

# Conflicts:
#	src/agent/agent_loop.rs

tests/support/gateway_workflow_harness.rs

@@ -226,7 +226,8 @@ impl GatewayWorkflowHarness {
             job_manager: None,
             prompt_queue: None,
             scheduler: Some(scheduler_slot.clone()),
-            default_user_id: user_id.clone(),
+            owner_id: user_id.clone(),
+            default_sender_id: user_id.clone(),
             shutdown_tx: tokio::sync::RwLock::new(None),
             ws_tracker: Some(Arc::new(WsConnectionTracker::new())),
             llm_provider: Some(Arc::clone(&components.llm)),

tests/support/trace_llm.rs

@@ -566,6 +566,7 @@ impl LlmProvider for TraceLlm {
                         id: tc.id,
                         name: tc.name,
                         arguments: tc.arguments,
+                        reasoning: None,
                     })
                     .collect();
                 Ok(ToolCompletionResponse {