feat(cli): rebrand splash and surface version in dashboard

Splash now reads "multi node agent orchestrator" / runfusion.ai / v<version>.
System panel and status bar also display the running CLI version.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

packages/cli/src/commands/dashboard-tui/__tests__/app.test.tsx

@@ -165,7 +165,8 @@ describe("DashboardApp smoke", () => {
     const frame = lastFrame() ?? "";
     // Splash can render either the compact text mark or the expanded block-art logo.
     expect(frame).toMatch(/FUSION|███████╗/);
-    expect(frame).toContain("AI coding agent dashboard");
+    expect(frame).toContain("multi node agent orchestrator");
+    expect(frame).toContain("runfusion.ai");
     unmount();
   });