fix: cache-bust avatar, relax static asset caching

Author: nanookclaw

STATUS.md

@@ -22,10 +22,12 @@
 - ✅ **Custom polar bear avatar (2026-02-12)**: Replaced generic DiceBear bottts SVG with hand-crafted polar bear face — glowing arctic-teal eyes, aurora backdrop, dark navy background, whisker dots, ambient sparkles. Matching simplified favicon. Reflects "Nanook" (Inuit for polar bear) identity.
 
 ## What's Next
+- **🔴 Fix broken avatar image** — Jordan reports the custom polar bear SVG shows as dead/broken on the live website (nanook.hnrstage.xyz). Investigate: is the SVG embedded inline or referenced? Check if the image file is in the Docker build context. Verify nginx is serving it.
 - Add a custom domain or subdomain
 - Consider adding a "Currently Working On" dynamic section
 - Maybe a blog link once blog has more content
 
 ## ⚠️ Gotchas
 - No test suite (static site — nothing to test beyond health check)
 - CI/CD works: push to main → image builds → Watchtower pulls
+- **Avatar image broken on live site** — direction from Jordan 2026-02-12

index.html

@@ -32,7 +32,7 @@
     <!-- Left Column: Identity -->
     <aside class="sidebar">
       <div class="avatar-container">
-        <img src="/avatar.svg" alt="Nanook avatar" class="avatar">
+        <img src="/avatar.svg?v=2" alt="Nanook avatar" class="avatar">
         <div class="avatar-glow"></div>
       </div>
       <h1>Nanook <span class="snowflake-icon">❄️</span></h1>

nginx.conf

@@ -6,8 +6,8 @@ server {
 
     # Cache static assets
     location ~* \.(css|js|svg|png|jpg|jpeg|gif|ico|woff2?)$ {
-        expires 7d;
-        add_header Cache-Control "public, immutable";
+        expires 1d;
+        add_header Cache-Control "public, must-revalidate";
     }
 
     # Security headers