feat(pitch): add SDK demo slide with screenshot gallery + inline preview

- New annex slide 'annex-sdk-demo' with auto-scrolling screenshot gallery
  (22 real screenshots from Müller Maschinenbau demo project)
- Browser chrome mockup, fullscreen view, thumbnail strip navigation
- Inline SDK dashboard preview on Product slide
- Seed script for creating demo data + taking Playwright screenshots
- Presenter script for SDK demo narration

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

pitch-deck/lib/presenter/presenter-script.ts

@@ -478,6 +478,24 @@ export const PRESENTER_SCRIPT: SlideScript[] = [
       },
     ],
   },
+
+  // 20 — annex-sdk-demo (45s)
+  {
+    slideId: 'annex-sdk-demo',
+    duration: 45,
+    paragraphs: [
+      {
+        text_de: 'Zum Abschluss: Echte Screenshots aus unserem Compliance SDK. Sie sehen hier das Projekt der Müller Maschinenbau GmbH — ein typischer mittelständischer Maschinenbauer mit KI-Projekten.',
+        text_en: 'To conclude: Real screenshots from our Compliance SDK. You can see the project of Müller Maschinenbau GmbH — a typical mid-sized machine builder with AI projects.',
+        pause_after: 2500,
+      },
+      {
+        text_de: 'Von der Risikomatrix über das Verarbeitungsverzeichnis bis zum Dokumenten-Generator — alle 65 Module arbeiten zusammen. Das ist keine Mockup-Präsentation, sondern eine produktive Plattform.',
+        text_en: 'From the risk matrix to the processing register to the document generator — all 65 modules work together. This is not a mockup presentation, but a productive platform.',
+        pause_after: 2000,
+      },
+    ],
+  },
 ]
 
 export function getScriptForSlide(slideId: string): SlideScript | undefined {