fix(workspace): a new session shows in its workspace

server/lib/dashboard-runs.js

@@ -181,6 +181,21 @@ function routerForSession(sessionId) {
   }
 }
 
+const sessionLaneStmt = db.prepare(`
+  SELECT lane_id FROM dashboard_runs
+  WHERE session_id = @sessionId AND lane_id IS NOT NULL
+  ORDER BY started_at DESC LIMIT 1
+`);
+
+/** The lane of the newest run that holds `sessionId`, or null. */
+function laneForSession(sessionId) {
+  try {
+    return sessionLaneStmt.get({ sessionId })?.lane_id ?? null;
+  } catch {
+    return null;
+  }
+}
+
 const runningStmt = db.prepare(
   "SELECT id FROM dashboard_runs WHERE status IN ('running', 'spawning')"
 );
@@ -212,4 +227,12 @@ function reconcileOrphans(isAlive = () => false) {
   }
 }
 
-module.exports = { recordRun, patchRun, listRuns, getRun, reconcileOrphans, routerForSession };
+module.exports = {
+  recordRun,
+  patchRun,
+  listRuns,
+  getRun,
+  reconcileOrphans,
+  routerForSession,
+  laneForSession,
+};