feat: add NIS2 landing page, roadmap page, and compliance section

- New /nis2 page: full Art. 21 mapping with covered/partial/roadmap/n-a
  tags, evidence-by-trigger breakdown, and roadmap callout
- New /roadmap page: planned and under-consideration items, NIS2-tagged
  items highlighted with monospace badge
- Home: new NIS2 section between screenshots and plugin block — Art. 21
  mapping list + MockCompliance UI + link to /nis2
- Features: new "Compliance & Audit (NIS2)" section
- Nav: Roadmap link added; NIS2 in Docs dropdown
- Footer: Roadmap and NIS2 links added
- docs/PRODUCT.md: NIS2 evidence foundation as value proposition #9
- docs/PAGES.md: /nis2, /roadmap, and NIS2 home section documented

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

src/App.tsx

@@ -5,6 +5,8 @@ import Home from './pages/Home'
 import Features from './pages/Features'
 import Drivers from './pages/Drivers'
 import GettingStarted from './pages/GettingStarted'
+import Roadmap from './pages/Roadmap'
+import Nis2 from './pages/Nis2'
 
 export default function App() {
   return (
@@ -17,6 +19,8 @@ export default function App() {
             <Route path="/features" element={<Features />} />
             <Route path="/drivers" element={<Drivers />} />
             <Route path="/docs/getting-started" element={<GettingStarted />} />
+            <Route path="/roadmap" element={<Roadmap />} />
+            <Route path="/nis2" element={<Nis2 />} />
           </Routes>
         </main>
         <Footer />