feat(FN-3087): add immediate wake controls for agent inbox and message API,

This merge ships five distinct features: experimental-flag gating for research tools in the CLI extension and core settings, immediate wake controls for the agent inbox and message API enabling on-demand heartbeat triggers, separation of plugin lifecycle from setup probe state in the dashboard, grap

Fusion-Task-Id: FN-3087

plugins/fusion-plugin-dependency-graph/src/__tests__/DependencyGraph.highlighting.test.tsx

@@ -100,6 +100,7 @@ describe("DependencyGraph highlighting", () => {
     expect(edgeCB?.className.baseVal || edgeCB?.className).toContain("graph-edge--highlighted");
 
     fireEvent.click(screen.getByTestId("task-C"));
+    expect(onOpenDetail).toHaveBeenCalledTimes(1);
     expect(onOpenDetail).toHaveBeenCalledWith(expect.objectContaining({ id: "C" }));
   });