Add Forrest Mims Mini-Notebooks resource link

Links the homepage reference row to forrest.warehack.ing/mims/ — the classic
hand-drawn Engineer's Mini-Notebook series. Custom spiral-notebook SVG with a
sketched resistor zigzag, in warm amber to sit apart from the teal IC chip.

frontend/src/components/OscilloscopeDisplay.astro

@@ -125,11 +125,11 @@
   // ── Signal configuration ──────────────────────────────────
   const SIGNALS = [
     { id: 'spirals',   name: 'Spirals',   src: '/spirals_shrt.mp3', artist: 'Jerobeam Fenderson', license: 'CC BY-NC-SA 4.0', link: 'http://oscilloscopemusic.com/' },
-    { id: 'function',  name: 'Function',  src: '/n-spheres/function.flac',  artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
-    { id: 'intersect', name: 'Intersect', src: '/n-spheres/intersect.flac', artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
-    { id: 'attractor', name: 'Attractor', src: '/n-spheres/attractor.flac', artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
-    { id: 'flux',      name: 'Flux',      src: '/n-spheres/flux.flac',      artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
-    { id: 'core',      name: 'Core',      src: '/n-spheres/core.flac',      artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
+    { id: 'function',  name: 'Function',  src: '/n-spheres/function.mp3',  artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
+    { id: 'intersect', name: 'Intersect', src: '/n-spheres/intersect.mp3', artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
+    { id: 'attractor', name: 'Attractor', src: '/n-spheres/attractor.mp3', artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
+    { id: 'flux',      name: 'Flux',      src: '/n-spheres/flux.mp3',      artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
+    { id: 'core',      name: 'Core',      src: '/n-spheres/core.mp3',      artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
   ] as const;
 
   // ── Skin configuration ────────────────────────────────────

frontend/src/pages/index.astro

@@ -156,6 +156,33 @@ try {
         <Icon name="lucide:chevron-right" class="w-4 h-4 text-slate-600 group-hover:text-slate-400 transition-colors" />
       </a>
 
+      <a href="https://forrest.warehack.ing/mims/" target="_blank" rel="noopener noreferrer"
+         class="inline-flex items-center gap-4 px-5 py-3 rounded-lg border border-slate-700
+                hover:border-slate-500 hover:bg-slate-800/40 transition-colors group">
+        <!-- Inline spiral-notebook SVG with a hand-sketched resistor zigzag — a nod to Mims' hand-drawn schematics -->
+        <svg viewBox="0 0 120 32" class="w-24 h-8 flex-shrink-0" xmlns="http://www.w3.org/2000/svg" aria-label="Hand-drawn electronics mini-notebook">
+          <!-- Notebook cover -->
+          <rect x="30" y="4" width="60" height="24" rx="2" fill="rgba(217,119,6,0.08)" stroke="rgba(217,119,6,0.6)" stroke-width="1.5"/>
+          <!-- Spiral binding rings on the left edge -->
+          <line x1="30" y1="9" x2="24" y2="9" stroke="rgba(217,119,6,0.5)" stroke-width="1.5"/>
+          <line x1="30" y1="16" x2="24" y2="16" stroke="rgba(217,119,6,0.5)" stroke-width="1.5"/>
+          <line x1="30" y1="23" x2="24" y2="23" stroke="rgba(217,119,6,0.5)" stroke-width="1.5"/>
+          <!-- Hand-drawn resistor zigzag inside the notebook -->
+          <polyline points="42,16 48,11 54,21 60,11 66,21 72,11 78,16" fill="none" stroke="rgba(217,119,6,0.55)" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+          <!-- Terminal node dot -->
+          <circle cx="83" cy="16" r="1.6" fill="rgba(217,119,6,0.65)"/>
+        </svg>
+        <div>
+          <span class="text-sm font-semibold text-slate-200 group-hover:text-slate-100">
+            Forrest Mims Mini-Notebooks
+          </span>
+          <span class="block text-xs text-slate-500">
+            15 classic hand-drawn electronics guides
+          </span>
+        </div>
+        <Icon name="lucide:chevron-right" class="w-4 h-4 text-slate-600 group-hover:text-slate-400 transition-colors" />
+      </a>
+
     </div>
   </section>