Make images clickable when both _src and _link fields exist

Fix bookmarklet rendering to wrap images in anchor tags when both
image source and link URL are present. This enables users to click
on thumbnails to navigate to the linked content.

Changes:
- Check for link companion when rendering images (both array and single values)
- Wrap <img> in <a> tag with target="_blank" if link exists
- Preserve non-clickable image rendering when no link is present
- Apply absolute URL conversion to both image sources and links

Example usage that now creates clickable images:
{
  "videos_src": "img@src",
  "videos_link": "a@href"
}

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: stenhougaard

src/utils/landing.ts

@@ -996,7 +996,18 @@ export function generateLandingPage(baseUrl: string): string {
                       img.src = toAbsoluteUrl(src);
                       if (alt) img.alt = alt;
                       img.style.cssText = 'max-width:100%;height:auto;border-radius:4px;display:block;';
-                      li.appendChild(img);
+
+                      // Wrap image in link if link exists
+                      if (link) {
+                        const a = document.createElement('a');
+                        a.href = toAbsoluteUrl(link);
+                        a.target = '_blank';
+                        a.style.cssText = 'display:block;';
+                        a.appendChild(img);
+                        li.appendChild(a);
+                      } else {
+                        li.appendChild(img);
+                      }
 
                       if (v) {
                         const caption = document.createElement('div');
@@ -1030,7 +1041,18 @@ export function generateLandingPage(baseUrl: string): string {
                     img.src = toAbsoluteUrl(srcs);
                     if (alts) img.alt = alts;
                     img.style.cssText = 'max-width:100%;height:auto;border-radius:4px;display:block;';
-                    content.appendChild(img);
+
+                    // Wrap image in link if link exists
+                    if (links) {
+                      const a = document.createElement('a');
+                      a.href = toAbsoluteUrl(links);
+                      a.target = '_blank';
+                      a.style.cssText = 'display:block;';
+                      a.appendChild(img);
+                      content.appendChild(a);
+                    } else {
+                      content.appendChild(img);
+                    }
 
                     if (value) {
                       const caption = document.createElement('div');