Initial commit: WatchStack v0.1.0

- FastAPI + SQLite backend with REST API
- Polymorphic Media model (book + series)
- Cover lookup via Open Library
- Vanilla HTML/CSS/JS frontend (MAL-inspired)
- Dark theme, status tabs, drawer detail, stats modal
- 8 seed demo entries

app/static/img/favicon.svg

@@ -0,0 +1,10 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">
+  <defs>
+    <linearGradient id="g" x1="0" x2="1" y1="0" y2="1">
+      <stop offset="0%" stop-color="#7c5cff"/>
+      <stop offset="100%" stop-color="#22d3ee"/>
+    </linearGradient>
+  </defs>
+  <rect width="64" height="64" rx="14" fill="url(#g)"/>
+  <text x="32" y="44" font-family="Arial, sans-serif" font-size="38" font-weight="800" fill="white" text-anchor="middle">W</text>
+</svg>