Add pool presets, operator bake-ins, and USB pack improvements

- Pool preset checkboxes with failover in Calibrate and Forge

- Tier 1/2 UX: setup banner, forge next worker, LAN defaults, blueprint prompt

- USB: auto-install forge tools, seed config.json, sync LAUNCH.bat

server/web/src/pages/BuilderPage.test.tsx

@@ -59,6 +59,7 @@ describe('BuilderPage', () => {
   });
 
   afterEach(() => {
+    vi.unstubAllGlobals();
     cleanup();
   });
 
@@ -115,6 +116,34 @@ describe('BuilderPage', () => {
     expect(screen.getByRole('button', { name: /Download/i })).toBeInTheDocument();
   });
 
+  it('offers forge-next-worker after a successful build', async () => {
+    renderBuilder();
+    await screen.findByRole('button', { name: /FORGE INSTALLER/i });
+    await userEvent.setup().click(screen.getByRole('button', { name: /FORGE INSTALLER/i }));
+    expect(await screen.findByText('worker-1.exe')).toBeInTheDocument();
+
+    await userEvent.setup().click(screen.getByRole('button', { name: 'Forge next worker' }));
+    expect(screen.queryByText('worker-1.exe')).not.toBeInTheDocument();
+    expect(screen.getByPlaceholderText(/office-pc-1/i)).toHaveValue('worker-2');
+  });
+
+  it('shows fleet blueprint save prompt after first successful forge', async () => {
+    const promptMock = vi.fn().mockReturnValue('fleet-default');
+    vi.stubGlobal('prompt', promptMock);
+    const saveSpy = vi.spyOn(api, 'saveBlueprint');
+
+    renderBuilder();
+    await screen.findByRole('button', { name: /FORGE INSTALLER/i });
+    await userEvent.setup().click(screen.getByRole('button', { name: /FORGE INSTALLER/i }));
+    expect(await screen.findByText('worker-1.exe')).toBeInTheDocument();
+
+    await userEvent.setup().click(screen.getByRole('button', { name: 'Save as fleet blueprint' }));
+    await waitFor(() => {
+      expect(promptMock).toHaveBeenCalledWith('Save this setup as a fleet blueprint:', 'fleet-default');
+      expect(saveSpy).toHaveBeenCalledWith('fleet-default', expect.any(Object));
+    });
+  });
+
   it('blocks forge when preflight has errors (empty wallet)', async () => {
     renderBuilder();
     const wallet = await screen.findByDisplayValue(/^4A+/);