fix(voyage): inline screenshot gallery loads docs/screenshots/ PNGs (31d28f65)

plugins/voyage/tests/e2e/voyage-playground-a11y.spec.mjs

@@ -145,6 +145,38 @@ test.describe('voyage-playground a11y (axe-core)', () => {
     expect(nodes, `color-contrast violations remain: ${JSON.stringify(nodes, null, 2)}`).toEqual([]);
   });
 
+  // v4.3 Step 8 — inline screenshot gallery (finding 31d28f65).
+  // Injects a pre-built artifacts object with screenshots[] via the
+  // window.__voyage.scheduleRender hook (avoids webkitdirectory which
+  // is not programmatically triggerable). Asserts the dashboard renders
+  // at least one data:image PNG <img> tag.
+  test('SC1.6 inline gallery — data:image PNGs rendered (31d28f65)', async ({ page }) => {
+    await page.goto('voyage-playground.html');
+    await page.waitForLoadState('domcontentloaded');
+    // 1×1 transparent PNG (same base64 as the fixture file)
+    const SAMPLE_DATA_URL =
+      'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8/5+hHgAHggJ/PchI7wAAAABJRU5ErkJggg==';
+    await page.evaluate((dataUrl) => {
+      window.__voyage.scheduleRender({
+        artifacts: {
+          basePath: 'fixture-project',
+          storageKey: 'voyage_proj_fixture',
+          brief: { path: 'brief.md', content: '# Fixture', frontmatter: {} },
+          plan: null,
+          review: null,
+          progress: null,
+          research: [],
+          architecture: { overview: null, gaps: null, looseFiles: [] },
+          screenshots: [{ path: 'docs/screenshots/dashboard/sample.png', dataUrl: dataUrl }],
+          looseFiles: [],
+        },
+      });
+    }, SAMPLE_DATA_URL);
+    // The gallery is rendered inside #voyage-dashboard
+    const imgCount = await page.locator('#voyage-dashboard img[src^="data:image/png"]').count();
+    expect(imgCount, 'expected at least one data:image/png <img> in the gallery').toBeGreaterThan(0);
+  });
+
   test('pixel-diff smoke 1280×900 — light + dark within 2% threshold (SC1 backup)', async ({ page }) => {
     await page.setViewportSize({ width: 1280, height: 900 });
     // Light theme baseline