feat: add note 4 porting

Author: Fre0Grella

src/content/notes/1-algebra.astro

@@ -25,7 +25,7 @@ export const meta: NoteMeta = {
 <div class="cover">
   <div class="cover-label">Interactive Notes</div>
   <h1>Linear Algebra<br>for Quantum Computing</h1>
-  <p>From the absolute basics to the qubit — with visualizations and exercises</p>
+  <p>{meta.description}</p>
 </div>
 
 <!-- TOC -->

src/content/notes/2-basics.astro

@@ -24,7 +24,7 @@ export const meta: NoteMeta = {
 <div class="cover">
   <div class="cover-label">Interactive Notes</div>
   <h1>Basic Concepts<br>of Quantum Computing</h1>
-  <p>Introduction to the fundamental ideas of quantum mechanics and quantum computing</p>
+  <p>{meta.description}</p>
 </div>
 
 <!-- TOC -->

src/content/notes/3-composite.astro

@@ -20,7 +20,7 @@ export const meta: NoteMeta = {
 <div class="cover">
   <div class="cover-label">Interactive Notes</div>
   <h1>Composite Quantum Systems<br>and Tensor Products</h1>
-  <p>Introduction to the tensor product, computing basis states of composite systems, and visualizing two-qubit states.</p>
+  <p>{meta.description}</p>
 </div>
 
 <div class="toc">