fix(tools): drop stale team_id/task_id fields from lane_completion test helper

AgentOutput has no team_id or task_id fields, but the lane_completion
tests::test_output() helper initialized both. This broke compilation of
the tools lib test crate, which in turn blocked `cargo test --workspace`.

The fields were never present on AgentOutput (team_id/task_id live on
the Task registry entries, not on agent output). Remove the stale
initializers so the test compiles and the lane-completion suite runs.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

rust/crates/tools/src/lane_completion.rs

@@ -116,8 +116,6 @@ mod tests {
             lane_events: vec![],
             derived_state: "working".to_string(),
             current_blocker: None,
-            team_id: None,
-            task_id: None,
             error: None,
         }
     }