Document static assets and image handling

- Add detailed section on image storage location and serving
- Document image URL rewriting from Windows paths to HTTP URLs
- Include examples of image content (robotics, running, technical diagrams)
- Update file structure with image handling details

DESIGN.md

@@ -11,7 +11,7 @@ There are two related projects:
 1. **thingamablog-api** (`projects/thingamablog-api/`): Contains the Java export tool for data extraction
 2. **thingamablog-v2** (`projects/thingamablog-v2/`): Contains the web app for browsing the extracted data
 
-No Git repositories are set up for these folders yet.
+No Git repositories are set up for these folders.
 
 ## Problem Statement
 
@@ -157,6 +157,25 @@ App
 | Frontend | React/Material-UI | Modern, component-based UI |
 | Images | Static serving | Direct file access for performance |
 
+### Static Assets & Image Handling
+
+#### Image Storage Location
+- **Path:** `/home/paulh/.openclaw/workspace/docs/pauls-blogs/Paul/1096292361887/web`
+- **Contents:** ~3.2MB of image files (JPG, GIF) from original blog posts
+- **Examples:** Robotics photos, running/training images, technical diagrams, circuit schematics
+- **Date Range:** Images from 2004-2009 blog posts
+
+#### Image Serving
+- **URL Path:** `/1096292361887/web/*` (preserves original blog structure)
+- **Implementation:** Express.static middleware serves files directly
+- **Fallback:** Root path `/` also serves images for compatibility
+
+#### Image URL Rewriting
+- **Problem:** Original blog posts contain Windows file paths (`file:///\\paulspc2\...\Weblogs/FILENAME.jpg`)
+- **Solution:** Backend rewrites image src attributes to HTTP URLs (`http://localhost:3637/FILENAME.jpg`)
+- **Regex Pattern:** Converts Windows UNC paths to web-accessible URLs
+- **Benefit:** Images display correctly without manual editing of HTML content
+
 ### File Structure
 ```
 projects/