Add live bugs found counter to homepage and refresh bugs page

- New bug-counter shortcode reads data/bugs.json at build time and
  displays the count (matching export.py filter) linked to /bugs/
- Regenerated bugs.html via export.py to sync counts

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

Author: mrigger

content/home/welcome.md

@@ -66,9 +66,10 @@ Core Areas:
 * Systems
 * Programming Languages
 * CS for Nature Conservation 🆕
-  
+
 <!-- {{< figure src="group-photos/group-2025-1.jpg">}} -->
 
+{{< bug-counter >}}
 
 [{{<icon name="twitter" pack="fab" >}}](https://twitter.com/test_nus)
 [{{<icon name="github" pack="fab" >}}](https://github.com/nus-test/)

layouts/shortcodes/bug-counter.html

@@ -0,0 +1,25 @@
+{{ $count := 0 }}
+{{ range site.Data.bugs }}
+  {{ $res := .resolution }}
+  {{ if or (eq $res "confirmed") (eq $res "fixed") (eq $res "open") (eq $res nil) }}
+    {{ $count = add $count 1 }}
+  {{ end }}
+{{ end }}
+<a href="/bugs/" style="text-decoration: none;">
+  <div style="
+    display: inline-block;
+    margin: 1rem 0;
+    padding: 0.75rem 1.5rem;
+    background: linear-gradient(135deg, #2c3e50, #3d5166);
+    color: white;
+    border-radius: 8px;
+    font-size: 1.15rem;
+    font-weight: 600;
+    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
+    transition: transform 0.15s, box-shadow 0.15s;
+  "
+  onmouseover="this.style.transform='translateY(-2px)';this.style.boxShadow='0 4px 14px rgba(0,0,0,0.25)'"
+  onmouseout="this.style.transform='';this.style.boxShadow='0 2px 8px rgba(0,0,0,0.2)'">
+    🐛 <strong>{{ $count }}</strong> Bugs Found &rarr;
+  </div>
+</a>