Add transparent WebP versions of the two GIFs, one gallery tile per name

heart/wink.webp is the keyed-out version of heart/wink.gif. The standing
cat in cat/tail.gif is now cat/wag.{webp,gif} since cat/tail.webp is a
different drawing; cat/tail.gif stays so old links work but is no longer
listed. Gallery images get a content hash in the query so browsers pick
up changed files instead of showing cached copies.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

vite.config.js

@@ -1,17 +1,21 @@
 // fills <!--gallery--> in index.html from whatever is in public/
-// anything rendered from gen/ gets one tile with webp + gif links, older hand-made files get a tile each
+// one tile per name: shows the .webp (or the .gif if that's all there is) and links every format
-import{readdirSync as rd,readFileSync as rf,existsSync as ex}from'fs'
+// tile images get ?v=<hash> so browsers drop old copies when a file changes, links stay clean for hotlinking
+import{readdirSync as rd,readFileSync as rf}from'fs'
+import{createHash}from'crypto'
+const hidden=['cat/tail.gif']  // same drawing as cat/wag.gif, kept so old links still work
 const walk=d=>rd(d,{withFileTypes:true}).flatMap(e=>e.isDirectory()?walk(`${d}/${e.name}`):`${d}/${e.name}`)
-const dims=f=>{const b=rf(f);return f.endsWith('.gif')?[b.readUInt16LE(6),b.readUInt16LE(8)]:[b.readUIntLE(24,3)+1,b.readUIntLE(27,3)+1]}
+const dims=(b,x)=>x=='gif'?[b.readUInt16LE(6),b.readUInt16LE(8)]:[b.readUIntLE(24,3)+1,b.readUIntLE(27,3)+1]
 const gallery=()=>{
-  const seen=new Set
+  const g={}
-  return walk('public').filter(f=>/\.(webp|gif)$/.test(f)).sort().map(f=>{
+  for(const f of walk('public').filter(f=>/\.(webp|gif)$/.test(f)).sort()){
-    const id=f.slice(7).replace(/\.\w+$/,''),g=ex(`gen/${id}.js`)
+    const p=f.slice(7),x=p.split('.').pop()
-    if(g&&seen.has(id))return''
+    if(!hidden.includes(p))(g[p.slice(0,-x.length-1)]??={})[x]=f
-    seen.add(id)
+  }
-    const src=g?`/${id}.webp`:f.slice(6),[w,h]=dims('public'+src)
+  return Object.entries(g).map(([id,fm])=>{
-    const links=(g?['webp','gif']:[f.split('.').pop()]).map(x=>`<a href="/${id}.${x}">${x}</a>`).join(' ')
+    const x=fm.webp?'webp':'gif',b=rf(fm[x]),[w,h]=dims(b,x),v=createHash('md5').update(b).digest('hex').slice(0,8)
-    return`<figure><a href="${src}"><img src="${src}" alt="${id.replace('/',' ')}" width="${w}" height="${h}" loading="lazy" decoding="async"></a><figcaption>${links}</figcaption></figure>`
+    const links=['webp','gif'].filter(k=>fm[k]).map(k=>`<a href="/${id}.${k}">${k}</a>`).join(' ')
-  }).filter(Boolean).join('\n')
+    return`<figure><a href="/${id}.${x}"><img src="/${id}.${x}?v=${v}" alt="${id.replace('/',' ')}" width="${w}" height="${h}" loading="lazy" decoding="async"></a><figcaption>${links}</figcaption></figure>`
+  }).join('\n')
 }
 export default{plugins:[{name:'gallery',transformIndexHtml:h=>h.replace('<!--gallery-->',gallery())}]}