feat(lanes): auto-setup (profile/agents/mcp) after Add Lane (F5)

client/src/components/lanes/AddLaneModal.tsx

@@ -41,6 +41,11 @@ export function AddLaneModal({
   const [branchesError, setBranchesError] = useState<string | null>(null);
   const [busy, setBusy] = useState(false);
   const [error, setError] = useState<string | null>(null);
+  const [setupResult, setSetupResult] = useState<{
+    profile: "scaffolded" | "skipped" | "failed";
+    agents: "ok" | "failed";
+    mcp: "ok" | "failed";
+  } | null>(null);
 
   const reset = () => {
     setSourceRepo("");
@@ -50,6 +55,7 @@ export function AddLaneModal({
     setBranchesError(null);
     setError(null);
     setBusy(false);
+    setSetupResult(null);
   };
 
   // Look up the repo's branches once the path settles - debounced so every
@@ -96,6 +102,32 @@ export function AddLaneModal({
         title: name,
         base: base || undefined,
       });
+
+      const [profileOutcome, agentsOutcome, mcpOutcome] = await Promise.allSettled([
+        api.lanes.profileInit(result.lane.id),
+        api.lanes.agentsInstall(result.lane.id),
+        api.lanes.mcpSync(result.lane.id),
+      ]);
+      setSetupResult({
+        profile:
+          profileOutcome.status === "fulfilled"
+            ? profileOutcome.value.scaffolded
+              ? "scaffolded"
+              : "skipped"
+            : "failed",
+        agents: agentsOutcome.status === "fulfilled" ? "ok" : "failed",
+        mcp: mcpOutcome.status === "fulfilled" ? "ok" : "failed",
+      });
+
+      if (import.meta.env.DEV) {
+        console.info("[add-lane] auto-setup result:", {
+          profile:
+            profileOutcome.status === "fulfilled" ? profileOutcome.value : profileOutcome.reason,
+          agents: agentsOutcome.status === "fulfilled" ? agentsOutcome.value : agentsOutcome.reason,
+          mcp: mcpOutcome.status === "fulfilled" ? mcpOutcome.value : mcpOutcome.reason,
+        });
+      }
+
       reset();
       onAdded(result.lane);
       onClose();