Task 10: Build Footer component with ECG decoration

- Created Footer.tsx with decorative ECG waveform SVG
- Footer uses Framer Motion for scroll-triggered entrance animation
- Centered layout with border-top, muted attribution text
- Integrated Footer into App.tsx content phase
- Three-phase orchestration (boot → ecg → content) already working

src/App.tsx

@@ -9,6 +9,7 @@ import { Experience } from './components/Experience'
 import { Education } from './components/Education'
 import { Projects } from './components/Projects'
 import { Contact } from './components/Contact'
+import { Footer } from './components/Footer'
 
 function App() {
   const [phase, setPhase] = useState<Phase>('boot')
@@ -39,6 +40,7 @@ function App() {
 
             <Contact />
           </main>
+          <Footer />
         </>
       )}
     </div>