From e58ee9df76c66de303d748e4a50d9f52c26e1216 Mon Sep 17 00:00:00 2001
From: Anthony Ettinger <anthony@profullstack.com>
Date: Tue, 3 Nov 2026 08:44:05 +0000
Subject: [PATCH 1/2] feat(auctions): accept video submissions (MP4, MOV, WebM
 up to 25 MB) with byte-range playback

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 src/auctions.ts       | 58 +++++++++++++++++++++++++++++++++++--------
 test/auctions.test.ts | 36 ++++++++++++++++++++++++++-
 2 files changed, 82 insertions(+), 12 deletions(-)

diff --git a/src/auctions.ts b/src/auctions.ts
index b678075..cd4e164 100644
--- a/src/auctions.ts
+++ b/src/auctions.ts
@@ -45,6 +45,20 @@ function themePicker(theme: AuctionTheme, path: string) {
 type ArtworkImage = { image_type: string; image: Uint8Array }
 
 const MAX_IMAGE_BYTES = 8 * 1024 * 1024
+// Caddy and the relay both cap a request body at 30 MiB, so a video stays under that with room for the form.
+const MAX_VIDEO_BYTES = 25 * 1024 * 1024
+const VIDEO_TYPES = new Set(['video/mp4', 'video/webm', 'video/quicktime'])
+const isVideo = (type: string) => type.startsWith('video/')
+
+/** The real video type from the file's first bytes, whatever the browser declared (phones often send none). */
+export function sniffVideo(bytes: Uint8Array): string | null {
+  if (bytes.length >= 4 && bytes[0] === 0x1a && bytes[1] === 0x45 && bytes[2] === 0xdf && bytes[3] === 0xa3) return 'video/webm'
+  if (bytes.length < 12 || String.fromCharCode(...bytes.slice(4, 8)) !== 'ftyp') return null
+  const brand = String.fromCharCode(...bytes.slice(8, 12))
+  if (brand === 'qt  ') return 'video/quicktime'
+  if (/^(isom|iso[2-9]|mp41|mp42|avc1|M4V |M4VP|dash|3gp[4-6]|3g2a|MSNV|f4v |mmp4)$/.test(brand)) return 'video/mp4'
+  return null
+}
 const IMAGE_TYPES = new Set(['image/jpeg', 'image/png', 'image/webp', 'image/avif', 'image/heic', 'image/heif'])
 const esc = (value: unknown) => String(value ?? '').replace(/[&<>"']/g, (c) => ({ '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#39;' })[c]!)
 const clean = (value: unknown, length: number) => String(value ?? '').replace(/[\u0000-\u001f\u007f]/g, ' ').trim().slice(0, length)
@@ -74,7 +88,7 @@ function page(theme: AuctionTheme, title: string, body: string, description = 'A
 }
 
 function artworkCard(item: Artwork) {
-  return `<article class="art-card"><a class="art-image" href="/art/${encodeURIComponent(item.id)}"><img src="/image/${encodeURIComponent(item.id)}" alt="${esc(item.title)} by ${esc(item.artist)}" loading="lazy"></a><div class="art-info"><span class="eyebrow">${esc(item.medium || 'ORIGINAL WORK')}</span><h3><a href="/art/${encodeURIComponent(item.id)}">${esc(item.title)}</a></h3><p>by ${esc(item.artist)}</p></div></article>`
+  return `<article class="art-card"><a class="art-image" href="/art/${encodeURIComponent(item.id)}">${isVideo(item.image_type) ? `<video src="/image/${encodeURIComponent(item.id)}" muted loop autoplay playsinline preload="metadata" aria-label="${esc(item.title)} by ${esc(item.artist)}"></video>` : `<img src="/image/${encodeURIComponent(item.id)}" alt="${esc(item.title)} by ${esc(item.artist)}" loading="lazy">`}</a><div class="art-info"><span class="eyebrow">${esc(item.medium || 'ORIGINAL WORK')}</span><h3><a href="/art/${encodeURIComponent(item.id)}">${esc(item.title)}</a></h3><p>by ${esc(item.artist)}</p></div></article>`
 }
 
 function home(house: AuctionHouse, theme: AuctionTheme) {
@@ -90,11 +104,11 @@ function home(house: AuctionHouse, theme: AuctionTheme) {
 }
 
 function formPage(theme: AuctionTheme, error = '') {
-  return page(theme, 'Submit artwork', `<main><section class="form-wrap"><a class="back-link" href="/">← Back to the house</a><p class="eyebrow">ADD A PIECE TO THE WALLS</p><h1>Show us<br><em>what you made.</em></h1><p class="form-intro">Share a clear photo and a little about the work. Your submission will appear in the public gallery.</p>${error ? `<p class="error" role="alert">${esc(error)}</p>` : ''}<form class="art-form" method="post" action="/new" enctype="multipart/form-data"><div class="hp" aria-hidden="true"><label>Leave this empty<input name="website" tabindex="-1" autocomplete="off"></label></div><label class="field"><span>Title <b>*</b></span><input name="title" maxlength="120" autocomplete="off" required placeholder="What is this piece called?"></label><label class="field"><span>Artist name <b>*</b></span><input name="artist" maxlength="80" autocomplete="name" required placeholder="The name you want shown"></label><label class="field"><span>Medium <small>optional</small></span><input name="medium" maxlength="80" autocomplete="off" placeholder="Oil on canvas, ceramic, collage…"></label><label class="field"><span>About the piece <small>optional</small></span><textarea name="description" rows="4" maxlength="1600" placeholder="A few words about the work"></textarea></label><label class="field upload-field"><span>Photo of your work <b>*</b></span><input name="image" type="file" accept="image/*" required><small>JPEG, PNG, WebP, AVIF or HEIC. Up to 8 MB.</small></label><label class="permission"><input type="checkbox" name="permission" value="yes" required><span>I own this work or have permission to share it, and I agree to display the photo and details publicly.</span></label><button class="button button-dark submit-button" type="submit">Add to the gallery <span aria-hidden="true">↗</span></button><p class="form-foot">Submissions are public as soon as they are added. Bidding and payment features are not active yet.</p></form></section></main>`, undefined, '/new')
+  return page(theme, 'Submit artwork', `<main><section class="form-wrap"><a class="back-link" href="/">← Back to the house</a><p class="eyebrow">ADD A PIECE TO THE WALLS</p><h1>Show us<br><em>what you made.</em></h1><p class="form-intro">Share a clear photo or a short video and a little about the work. Your submission will appear in the public gallery.</p>${error ? `<p class="error" role="alert">${esc(error)}</p>` : ''}<form class="art-form" method="post" action="/new" enctype="multipart/form-data"><div class="hp" aria-hidden="true"><label>Leave this empty<input name="website" tabindex="-1" autocomplete="off"></label></div><label class="field"><span>Title <b>*</b></span><input name="title" maxlength="120" autocomplete="off" required placeholder="What is this piece called?"></label><label class="field"><span>Artist name <b>*</b></span><input name="artist" maxlength="80" autocomplete="name" required placeholder="The name you want shown"></label><label class="field"><span>Medium <small>optional</small></span><input name="medium" maxlength="80" autocomplete="off" placeholder="Oil on canvas, ceramic, collage…"></label><label class="field"><span>About the piece <small>optional</small></span><textarea name="description" rows="4" maxlength="1600" placeholder="A few words about the work"></textarea></label><label class="field upload-field"><span>Photo or video of your work <b>*</b></span><input name="image" type="file" accept="image/*,video/mp4,video/webm,video/quicktime,.mp4,.mov,.webm" required><small>Photos: JPEG, PNG, WebP, AVIF or HEIC up to 8 MB. Videos: MP4, MOV or WebM up to 25 MB.</small></label><label class="permission"><input type="checkbox" name="permission" value="yes" required><span>I own this work or have permission to share it, and I agree to display the photo and details publicly.</span></label><button class="button button-dark submit-button" type="submit">Add to the gallery <span aria-hidden="true">↗</span></button><p class="form-foot">Submissions are public as soon as they are added. Bidding and payment features are not active yet.</p></form></section></main>`, undefined, '/new')
 }
 
 function detail(item: Artwork, theme: AuctionTheme) {
-  return page(theme, item.title, `<main><section class="detail-wrap"><a class="back-link" href="/#gallery">← Back to the gallery</a><div class="detail-grid"><img class="detail-image" src="/image/${encodeURIComponent(item.id)}" alt="${esc(item.title)} by ${esc(item.artist)}"><div class="detail-copy"><p class="eyebrow">${esc(item.medium || 'ORIGINAL WORK')}</p><h1>${esc(item.title)}</h1><p class="artist">by ${esc(item.artist)}</p>${item.description ? `<p class="detail-description">${esc(item.description).replace(/\n/g, '<br>')}</p>` : ''}<a class="text-link" href="/new">Add your work <span aria-hidden="true">↗</span></a><p class="form-foot">Bidding and payment features are not active yet.</p></div></div></section></main>`, 'A piece in the Art Auctions House gallery.', `/art/${encodeURIComponent(item.id)}`)
+  return page(theme, item.title, `<main><section class="detail-wrap"><a class="back-link" href="/#gallery">← Back to the gallery</a><div class="detail-grid">${isVideo(item.image_type) ? `<video class="detail-image" src="/image/${encodeURIComponent(item.id)}" controls playsinline preload="metadata" aria-label="${esc(item.title)} by ${esc(item.artist)}"></video>` : `<img class="detail-image" src="/image/${encodeURIComponent(item.id)}" alt="${esc(item.title)} by ${esc(item.artist)}">`}<div class="detail-copy"><p class="eyebrow">${esc(item.medium || 'ORIGINAL WORK')}</p><h1>${esc(item.title)}</h1><p class="artist">by ${esc(item.artist)}</p>${item.description ? `<p class="detail-description">${esc(item.description).replace(/\n/g, '<br>')}</p>` : ''}<a class="text-link" href="/new">Add your work <span aria-hidden="true">↗</span></a><p class="form-foot">Bidding and payment features are not active yet.</p></div></div></section></main>`, 'A piece in the Art Auctions House gallery.', `/art/${encodeURIComponent(item.id)}`)
 }
 
 export class AuctionHouse {
@@ -162,8 +176,20 @@ export function createAuctionApp(house: AuctionHouse) {
   app.get('/image/:id', (c) => {
     const image = house.image(c.req.param('id'))
     if (!image) return c.text('Not found', 404)
-    const bytes = image.image.slice().buffer as ArrayBuffer
-    return c.body(bytes, 200, { 'content-type': image.image_type, 'cache-control': 'public, max-age=86400', 'x-content-type-options': 'nosniff' })
+    const all = image.image
+    const headers: Record<string, string> = { 'content-type': image.image_type, 'cache-control': 'public, max-age=86400', 'x-content-type-options': 'nosniff', 'accept-ranges': 'bytes' }
+    // Safari will not play a video unless the server answers byte ranges.
+    const range = /^bytes=(\d*)-(\d*)$/.exec(c.req.header('range') ?? '')
+    if (range && (range[1] || range[2])) {
+      const size = all.length
+      let start = range[1] ? Number(range[1]) : size - Number(range[2])
+      let end = range[1] && range[2] ? Number(range[2]) : size - 1
+      start = Math.max(0, start)
+      end = Math.min(end, size - 1)
+      if (start > end || start >= size) return c.body(null, 416, { 'content-range': `bytes */${size}` })
+      return c.body(all.slice(start, end + 1).buffer as ArrayBuffer, 206, { ...headers, 'content-range': `bytes ${start}-${end}/${size}` })
+    }
+    return c.body(all.slice().buffer as ArrayBuffer, 200, headers)
   })
   app.get('/art/:id', (c) => {
     const item = house.get(c.req.param('id'))
@@ -198,12 +224,22 @@ export function createAuctionApp(house: AuctionHouse) {
     if (!title || !artist) return c.html(formPage(theme, 'Add a title and artist name to continue.'), 400)
     if (body.permission !== 'yes') return c.html(formPage(theme, 'Please confirm you have permission to share this work.'), 400)
     const image = body.image
-    if (!(image instanceof File) || image.size === 0) return c.html(formPage(theme, 'Choose a photo of your work to continue.'), 400)
-    if (image.size > MAX_IMAGE_BYTES) return c.html(formPage(theme, 'That photo is over 8 MB. Choose a smaller image and try again.'), 413)
-    const imageType = image.type.toLowerCase()
-    if (!IMAGE_TYPES.has(imageType)) return c.html(formPage(theme, 'Choose a JPEG, PNG, WebP, AVIF or HEIC image.'), 415)
+    if (!(image instanceof File) || image.size === 0) return c.html(formPage(theme, 'Choose a photo or video of your work to continue.'), 400)
+    const declared = image.type.toLowerCase()
+    const wantsVideo = isVideo(declared) || (!IMAGE_TYPES.has(declared) && /\.(mp4|m4v|mov|webm)$/i.test(image.name))
+    if (wantsVideo) {
+      if (image.size > MAX_VIDEO_BYTES) return c.html(formPage(theme, 'That video is over 25 MB. Trim it or export a smaller version and try again.'), 413)
+    } else {
+      if (image.size > MAX_IMAGE_BYTES) return c.html(formPage(theme, 'That photo is over 8 MB. Choose a smaller image and try again.'), 413)
+      if (!IMAGE_TYPES.has(declared)) return c.html(formPage(theme, 'Choose a JPEG, PNG, WebP, AVIF or HEIC photo, or an MP4, MOV or WebM video.'), 415)
+    }
     const bytes = new Uint8Array(await image.arrayBuffer())
-    if (!validImage(imageType, bytes)) return c.html(formPage(theme, 'That file does not look like a supported image.'), 415)
+    let imageType = declared
+    if (wantsVideo) {
+      const sniffed = sniffVideo(bytes)
+      if (!sniffed || !VIDEO_TYPES.has(sniffed)) return c.html(formPage(theme, 'That file does not look like an MP4, MOV or WebM video.'), 415)
+      imageType = sniffed
+    } else if (!validImage(imageType, bytes)) return c.html(formPage(theme, 'That file does not look like a supported image.'), 415)
     const id = house.add({ title, artist, medium, description, imageType, image: bytes })
     return c.redirect(`/art/${encodeURIComponent(id)}`, 303)
   })
@@ -217,4 +253,4 @@ const AUCTIONS_CSS = `/* Themes: "warm" (the original cream and green house look
 /* Blue must come after the :root default: equal specificity, so source order decides. */
 html[data-theme=blue]{--ink:#16213a;--muted:#5f6b82;--soft:#46526a;--paper:#eef3fa;--white:#fbfdff;--green:#1f4f8f;--on-green:#f6f9ff;--on-green-accent:#9cc7ff;--line:#d2dcea;--accent:#2f7fe0;--frame:#dbe4f1;--panel:#e2eaf5;--art-1:#c9d8ee;--art-2:#8eaad3;--art-3:#3d6aa8;--art-4:#13294d;--art-shadow:#d6e1f1;--art-frame:#f2f7ff;--art-sun:#f1f5fb;--shape-1:#183865;--shape-2:#4b7fc4;--shape-3:#dbe7f6;--shape-4:#7aa3d9;--invite-eyebrow:#a8c9f2;--invite-em:#c6dcf8;--invite-small:#c5d1e4;--input-line:#c0cbdc;--input-bg:#fff;--upload-line:#98a8c2;--upload-bg:#f4f7fc;--error-bg:#fbe4e4;--error-ink:#8a2b2b;--focus:#3b82f6}
 .theme-pick{display:flex;align-items:center;gap:6px;color:var(--muted);font-size:11px;letter-spacing:.08em}.theme-pick a{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border:1px solid var(--line);border-radius:999px;color:var(--ink)}.theme-pick a[aria-current=true]{border-color:var(--green);font-weight:700}.theme-pick i{display:inline-block;width:10px;height:10px;border-radius:50%}.swatch-blue{background:#1f4f8f}.swatch-warm{background:#384b36}
-:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink)}a{color:inherit;text-decoration:none}.top{height:82px;padding:0 max(6vw,24px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-family:Georgia,serif;font-size:20px;line-height:1}.brand small{display:block;margin-top:7px;font:9px/1.1 ui-sans-serif,system-ui,sans-serif;letter-spacing:.15em;color:var(--muted)}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border:1px solid var(--green);border-radius:50%;color:var(--green);font:italic 24px Georgia,serif}.top nav{display:flex;align-items:center;gap:32px;font-size:13px}.top nav a:first-child{color:var(--muted)}.nav-cta,.text-link{font-weight:650}.nav-cta span,.text-link span,.button span{margin-left:8px;color:var(--accent)}main{max-width:1440px;margin:0 auto;padding:0 max(6vw,24px)}.hero{position:relative;min-height:540px;padding:76px 0 86px;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:8%;border-bottom:1px solid var(--line)}.hero-copy{position:relative;z-index:1}.eyebrow{margin:0 0 18px;color:var(--green);font-size:10px;font-weight:750;letter-spacing:.19em}.hero h1,.form-wrap h1{margin:0;font:clamp(52px,6.5vw,88px)/.96 Georgia,"Times New Roman",serif;letter-spacing:-.055em;font-weight:400}.hero h1 em,.form-wrap h1 em,.invite h2 em{color:var(--green);font-weight:400}.lede{max-width:370px;margin:24px 0 28px;color:var(--soft);font:18px/1.55 Georgia,serif}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border:0;border-radius:2px;font:650 13px ui-sans-serif,system-ui,sans-serif;cursor:pointer}.button-dark{background:var(--green);color:var(--on-green)}.button-dark span{color:var(--on-green-accent)}.button-light{background:var(--paper);color:var(--ink)}.hero-note{margin:17px 0 0;color:var(--muted);font-size:11px}.hero-art{position:relative;overflow:hidden;width:min(100%,500px);height:380px;justify-self:end;background:linear-gradient(135deg,var(--art-1) 0%,var(--art-2) 47%,var(--art-3) 47%,var(--art-4) 100%);box-shadow:20px 24px 0 var(--art-shadow)}.hero-art:before{content:"";position:absolute;inset:18px;border:1px solid var(--art-frame);opacity:.7}.sun{position:absolute;top:46px;right:78px;width:132px;height:132px;border-radius:50%;background:var(--art-sun)}.shape{position:absolute;bottom:-50px;border-radius:50% 50% 0 0}.shape-one{left:4%;width:65%;height:63%;background:var(--shape-1);transform:rotate(-17deg)}.shape-two{right:-12%;width:62%;height:75%;background:var(--shape-2);transform:rotate(15deg)}.shape-three{left:27%;bottom:-28%;width:48%;height:65%;background:var(--shape-3);transform:rotate(33deg)}.shape-four{left:52%;bottom:-22%;width:30%;height:61%;background:var(--shape-4);transform:rotate(-24deg)}.art-caption{position:absolute;left:34px;bottom:28px;color:white;font:italic 18px/1.45 Georgia,serif}.art-caption b{font:10px ui-sans-serif,system-ui,sans-serif;letter-spacing:.12em;text-transform:uppercase}.hero-index{position:absolute;right:0;bottom:22px;color:var(--muted);font-size:10px;letter-spacing:.15em}.gallery-section{padding:74px 0 92px}.section-head{display:flex;align-items:end;justify-content:space-between;margin-bottom:30px}.section-head .eyebrow{margin-bottom:11px}.section-head h2,.invite h2{margin:0;font:clamp(30px,4vw,48px)/1.1 Georgia,serif;font-weight:400;letter-spacing:-.03em}.count{margin-left:7px;vertical-align:top;color:var(--muted);font:11px ui-sans-serif,system-ui,sans-serif;letter-spacing:0}.text-link{font-size:12px}.gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px 22px}.art-card{min-width:0}.art-image{display:block;overflow:hidden;aspect-ratio:4/4.7;background:var(--frame)}.art-image img{width:100%;height:100%;display:block;object-fit:cover;transition:transform .35s}.art-card:hover img{transform:scale(1.025)}.art-info{padding:16px 1px}.art-info .eyebrow{font-size:9px;margin:0 0 8px}.art-info h3{margin:0;font:23px/1.2 Georgia,serif;font-weight:400}.art-info p{margin:7px 0 0;color:var(--muted);font:14px Georgia,serif}.empty{padding:72px 24px;text-align:center;background:var(--panel)}.empty-stamp{display:grid;place-items:center;width:55px;height:55px;margin:0 auto 20px;border:1px solid var(--green);border-radius:50%;color:var(--green);font-size:25px}.empty h3{margin:0;font:30px Georgia,serif;font-weight:400}.empty p{max-width:390px;margin:12px auto 22px;color:var(--muted);font:15px/1.6 Georgia,serif}.invite{margin:0 calc(-1 * max(6vw,24px));padding:76px max(6vw,24px);background:var(--green);color:var(--on-green);display:grid;grid-template-columns:1fr 1fr;gap:8%;align-items:center}.invite .eyebrow{color:var(--invite-eyebrow)}.invite h2 em{color:var(--invite-em)}.invite-copy p{max-width:360px;margin:0 0 24px;font:18px/1.55 Georgia,serif}.invite-copy small{display:block;max-width:390px;margin-top:15px;color:var(--invite-small);font-size:11px;line-height:1.5}.form-wrap{max-width:620px;margin:0 auto;padding:64px 0 100px}.back-link{display:inline-block;margin-bottom:52px;color:var(--muted);font-size:12px}.form-wrap .eyebrow{margin-bottom:16px}.form-wrap h1{font-size:clamp(48px,8vw,70px)}.form-intro{max-width:460px;margin:20px 0 30px;color:var(--soft);font:17px/1.6 Georgia,serif}.art-form{padding:30px;background:var(--white);border:1px solid var(--line)}.field{display:block;margin-bottom:21px}.field>span{display:block;margin-bottom:8px;font-size:12px;font-weight:700}.field b{color:var(--accent)}.field small{margin-left:7px;color:var(--muted);font-weight:400}.field input:not([type=file]),.field textarea{display:block;width:100%;min-height:48px;padding:12px 13px;border:1px solid var(--input-line);border-radius:2px;background:var(--input-bg);color:var(--ink);font:15px ui-sans-serif,system-ui,sans-serif}.field textarea{min-height:120px;resize:vertical}.upload-field input[type=file]{display:block;width:100%;min-height:54px;padding:13px;border:1px dashed var(--upload-line);background:var(--upload-bg);color:var(--ink);font-size:13px}.upload-field>small{display:block;margin:8px 0 0;color:var(--muted);font-size:11px}.permission{display:flex;gap:11px;align-items:flex-start;margin:24px 0;color:var(--soft);font-size:12px;line-height:1.55}.permission input{width:18px;height:18px;margin:0;flex:0 0 auto;accent-color:var(--green)}.submit-button{width:100%}.form-foot{margin:16px 0 0;color:var(--muted);font-size:11px;line-height:1.55}.error{padding:12px 14px;background:var(--error-bg);color:var(--error-ink);font-size:13px}.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}.detail-wrap{padding:48px 0 90px}.detail-wrap .back-link{margin-bottom:30px}.detail-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(280px,.75fr);gap:8%;align-items:start}.detail-image{display:block;width:100%;max-height:78vh;object-fit:contain;background:var(--frame)}.detail-copy{padding:10px 0}.detail-copy h1{margin:0;font:clamp(42px,6vw,72px)/1 Georgia,serif;font-weight:400;letter-spacing:-.04em}.detail-copy .artist{margin:13px 0 28px;color:var(--muted);font:18px Georgia,serif}.detail-description{margin:0 0 28px;font:16px/1.7 Georgia,serif}.footer-brand{font-size:17px}.footer-brand .brand-mark{width:33px;height:33px;font-size:21px}footer{display:flex;justify-content:space-between;align-items:center;padding:28px max(6vw,24px);border-top:1px solid var(--line)}footer p{max-width:240px;color:var(--muted);font:13px/1.5 Georgia,serif}input:focus-visible,textarea:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid var(--focus);outline-offset:3px}@media(max-width:760px){.top{height:70px}.top nav{gap:16px;font-size:11px}.brand{font-size:17px}.brand small{font-size:8px}.hero{min-height:auto;padding:55px 0 65px;grid-template-columns:1fr;gap:38px}.hero h1{font-size:clamp(50px,13vw,76px)}.hero-art{width:100%;height:clamp(250px,75vw,380px);justify-self:stretch}.hero-index{bottom:18px}.gallery-section{padding:58px 0 68px}.section-head{align-items:start;gap:12px}.section-head .text-link{padding-top:20px;font-size:11px}.gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 13px}.art-info h3{font-size:18px}.art-info p{font-size:12px}.invite{grid-template-columns:1fr;gap:24px;padding-top:56px;padding-bottom:58px}.form-wrap{padding:42px 0 72px}.back-link{margin-bottom:36px}.art-form{padding:20px}.detail-grid{grid-template-columns:1fr;gap:30px}.detail-image{max-height:65vh}footer{gap:18px;align-items:flex-start;flex-wrap:wrap}.theme-pick{flex-basis:100%}footer p{max-width:150px;font-size:12px}}@media(max-width:380px){.top{padding-inline:16px}.top nav{gap:12px}.top nav a:first-child{display:none}main{padding-inline:16px}.invite{margin-inline:-16px;padding-inline:16px}.hero-art{height:250px}.art-form{padding:16px}footer{padding-inline:16px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}`
+:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink)}a{color:inherit;text-decoration:none}.top{height:82px;padding:0 max(6vw,24px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-family:Georgia,serif;font-size:20px;line-height:1}.brand small{display:block;margin-top:7px;font:9px/1.1 ui-sans-serif,system-ui,sans-serif;letter-spacing:.15em;color:var(--muted)}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border:1px solid var(--green);border-radius:50%;color:var(--green);font:italic 24px Georgia,serif}.top nav{display:flex;align-items:center;gap:32px;font-size:13px}.top nav a:first-child{color:var(--muted)}.nav-cta,.text-link{font-weight:650}.nav-cta span,.text-link span,.button span{margin-left:8px;color:var(--accent)}main{max-width:1440px;margin:0 auto;padding:0 max(6vw,24px)}.hero{position:relative;min-height:540px;padding:76px 0 86px;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:8%;border-bottom:1px solid var(--line)}.hero-copy{position:relative;z-index:1}.eyebrow{margin:0 0 18px;color:var(--green);font-size:10px;font-weight:750;letter-spacing:.19em}.hero h1,.form-wrap h1{margin:0;font:clamp(52px,6.5vw,88px)/.96 Georgia,"Times New Roman",serif;letter-spacing:-.055em;font-weight:400}.hero h1 em,.form-wrap h1 em,.invite h2 em{color:var(--green);font-weight:400}.lede{max-width:370px;margin:24px 0 28px;color:var(--soft);font:18px/1.55 Georgia,serif}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border:0;border-radius:2px;font:650 13px ui-sans-serif,system-ui,sans-serif;cursor:pointer}.button-dark{background:var(--green);color:var(--on-green)}.button-dark span{color:var(--on-green-accent)}.button-light{background:var(--paper);color:var(--ink)}.hero-note{margin:17px 0 0;color:var(--muted);font-size:11px}.hero-art{position:relative;overflow:hidden;width:min(100%,500px);height:380px;justify-self:end;background:linear-gradient(135deg,var(--art-1) 0%,var(--art-2) 47%,var(--art-3) 47%,var(--art-4) 100%);box-shadow:20px 24px 0 var(--art-shadow)}.hero-art:before{content:"";position:absolute;inset:18px;border:1px solid var(--art-frame);opacity:.7}.sun{position:absolute;top:46px;right:78px;width:132px;height:132px;border-radius:50%;background:var(--art-sun)}.shape{position:absolute;bottom:-50px;border-radius:50% 50% 0 0}.shape-one{left:4%;width:65%;height:63%;background:var(--shape-1);transform:rotate(-17deg)}.shape-two{right:-12%;width:62%;height:75%;background:var(--shape-2);transform:rotate(15deg)}.shape-three{left:27%;bottom:-28%;width:48%;height:65%;background:var(--shape-3);transform:rotate(33deg)}.shape-four{left:52%;bottom:-22%;width:30%;height:61%;background:var(--shape-4);transform:rotate(-24deg)}.art-caption{position:absolute;left:34px;bottom:28px;color:white;font:italic 18px/1.45 Georgia,serif}.art-caption b{font:10px ui-sans-serif,system-ui,sans-serif;letter-spacing:.12em;text-transform:uppercase}.hero-index{position:absolute;right:0;bottom:22px;color:var(--muted);font-size:10px;letter-spacing:.15em}.gallery-section{padding:74px 0 92px}.section-head{display:flex;align-items:end;justify-content:space-between;margin-bottom:30px}.section-head .eyebrow{margin-bottom:11px}.section-head h2,.invite h2{margin:0;font:clamp(30px,4vw,48px)/1.1 Georgia,serif;font-weight:400;letter-spacing:-.03em}.count{margin-left:7px;vertical-align:top;color:var(--muted);font:11px ui-sans-serif,system-ui,sans-serif;letter-spacing:0}.text-link{font-size:12px}.gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px 22px}.art-card{min-width:0}.art-image{display:block;overflow:hidden;aspect-ratio:4/4.7;background:var(--frame)}.art-image img,.art-image video{width:100%;height:100%;display:block;object-fit:cover;transition:transform .35s}.art-card:hover img,.art-card:hover video{transform:scale(1.025)}.art-info{padding:16px 1px}.art-info .eyebrow{font-size:9px;margin:0 0 8px}.art-info h3{margin:0;font:23px/1.2 Georgia,serif;font-weight:400}.art-info p{margin:7px 0 0;color:var(--muted);font:14px Georgia,serif}.empty{padding:72px 24px;text-align:center;background:var(--panel)}.empty-stamp{display:grid;place-items:center;width:55px;height:55px;margin:0 auto 20px;border:1px solid var(--green);border-radius:50%;color:var(--green);font-size:25px}.empty h3{margin:0;font:30px Georgia,serif;font-weight:400}.empty p{max-width:390px;margin:12px auto 22px;color:var(--muted);font:15px/1.6 Georgia,serif}.invite{margin:0 calc(-1 * max(6vw,24px));padding:76px max(6vw,24px);background:var(--green);color:var(--on-green);display:grid;grid-template-columns:1fr 1fr;gap:8%;align-items:center}.invite .eyebrow{color:var(--invite-eyebrow)}.invite h2 em{color:var(--invite-em)}.invite-copy p{max-width:360px;margin:0 0 24px;font:18px/1.55 Georgia,serif}.invite-copy small{display:block;max-width:390px;margin-top:15px;color:var(--invite-small);font-size:11px;line-height:1.5}.form-wrap{max-width:620px;margin:0 auto;padding:64px 0 100px}.back-link{display:inline-block;margin-bottom:52px;color:var(--muted);font-size:12px}.form-wrap .eyebrow{margin-bottom:16px}.form-wrap h1{font-size:clamp(48px,8vw,70px)}.form-intro{max-width:460px;margin:20px 0 30px;color:var(--soft);font:17px/1.6 Georgia,serif}.art-form{padding:30px;background:var(--white);border:1px solid var(--line)}.field{display:block;margin-bottom:21px}.field>span{display:block;margin-bottom:8px;font-size:12px;font-weight:700}.field b{color:var(--accent)}.field small{margin-left:7px;color:var(--muted);font-weight:400}.field input:not([type=file]),.field textarea{display:block;width:100%;min-height:48px;padding:12px 13px;border:1px solid var(--input-line);border-radius:2px;background:var(--input-bg);color:var(--ink);font:15px ui-sans-serif,system-ui,sans-serif}.field textarea{min-height:120px;resize:vertical}.upload-field input[type=file]{display:block;width:100%;min-height:54px;padding:13px;border:1px dashed var(--upload-line);background:var(--upload-bg);color:var(--ink);font-size:13px}.upload-field>small{display:block;margin:8px 0 0;color:var(--muted);font-size:11px}.permission{display:flex;gap:11px;align-items:flex-start;margin:24px 0;color:var(--soft);font-size:12px;line-height:1.55}.permission input{width:18px;height:18px;margin:0;flex:0 0 auto;accent-color:var(--green)}.submit-button{width:100%}.form-foot{margin:16px 0 0;color:var(--muted);font-size:11px;line-height:1.55}.error{padding:12px 14px;background:var(--error-bg);color:var(--error-ink);font-size:13px}.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}.detail-wrap{padding:48px 0 90px}.detail-wrap .back-link{margin-bottom:30px}.detail-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(280px,.75fr);gap:8%;align-items:start}.detail-image{display:block;width:100%;max-height:78vh;object-fit:contain;background:var(--frame)}.detail-copy{padding:10px 0}.detail-copy h1{margin:0;font:clamp(42px,6vw,72px)/1 Georgia,serif;font-weight:400;letter-spacing:-.04em}.detail-copy .artist{margin:13px 0 28px;color:var(--muted);font:18px Georgia,serif}.detail-description{margin:0 0 28px;font:16px/1.7 Georgia,serif}.footer-brand{font-size:17px}.footer-brand .brand-mark{width:33px;height:33px;font-size:21px}footer{display:flex;justify-content:space-between;align-items:center;padding:28px max(6vw,24px);border-top:1px solid var(--line)}footer p{max-width:240px;color:var(--muted);font:13px/1.5 Georgia,serif}input:focus-visible,textarea:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid var(--focus);outline-offset:3px}@media(max-width:760px){.top{height:70px}.top nav{gap:16px;font-size:11px}.brand{font-size:17px}.brand small{font-size:8px}.hero{min-height:auto;padding:55px 0 65px;grid-template-columns:1fr;gap:38px}.hero h1{font-size:clamp(50px,13vw,76px)}.hero-art{width:100%;height:clamp(250px,75vw,380px);justify-self:stretch}.hero-index{bottom:18px}.gallery-section{padding:58px 0 68px}.section-head{align-items:start;gap:12px}.section-head .text-link{padding-top:20px;font-size:11px}.gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 13px}.art-info h3{font-size:18px}.art-info p{font-size:12px}.invite{grid-template-columns:1fr;gap:24px;padding-top:56px;padding-bottom:58px}.form-wrap{padding:42px 0 72px}.back-link{margin-bottom:36px}.art-form{padding:20px}.detail-grid{grid-template-columns:1fr;gap:30px}.detail-image{max-height:65vh}footer{gap:18px;align-items:flex-start;flex-wrap:wrap}.theme-pick{flex-basis:100%}footer p{max-width:150px;font-size:12px}}@media(max-width:380px){.top{padding-inline:16px}.top nav{gap:12px}.top nav a:first-child{display:none}main{padding-inline:16px}.invite{margin-inline:-16px;padding-inline:16px}.hero-art{height:250px}.art-form{padding:16px}footer{padding-inline:16px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}`
diff --git a/test/auctions.test.ts b/test/auctions.test.ts
index 38fb5fc..2cc9811 100644
--- a/test/auctions.test.ts
+++ b/test/auctions.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from 'bun:test'
-import { AuctionHouse, createAuctionApp, isAuctionHost } from '../src/auctions.js'
+import { AuctionHouse, createAuctionApp, isAuctionHost, sniffVideo } from '../src/auctions.js'
 import { createApp } from '../src/server.js'
 
 const png = Uint8Array.from(Buffer.from('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mP8/x8AAwMCAO+/l0sAAAAASUVORK5CYII=', 'base64'))
@@ -137,4 +137,38 @@ describe('Art Auctions House', () => {
     expect(house.list()).toHaveLength(1)
     house.db.close()
   })
+
+  it('accepts a phone video, sniffs its real type and serves byte ranges', async () => {
+    const house = new AuctionHouse()
+    const app = createAuctionApp(house)
+    // A minimal ISO BMFF header: [size]ftyp + brand, then padding.
+    const mp4 = new Uint8Array(64)
+    mp4.set([0, 0, 0, 0x18], 0)
+    mp4.set([...'ftypqt  '].map((ch) => ch.charCodeAt(0)), 4)
+    expect(sniffVideo(mp4)).toBe('video/quicktime')
+    const form = new FormData()
+    form.set('title', 'Dahlia timelapse')
+    form.set('artist', 'Ada Artist')
+    form.set('permission', 'yes')
+    form.set('image', new File([mp4], 'IMG_0001.MOV', { type: '' }))
+    const res = await app.fetch(new Request('https://auctions.pit.world/new', { method: 'POST', headers: { origin: 'https://auctions.pit.world' }, body: form }), { ip: '203.0.113.30' })
+    expect(res.status).toBe(303)
+    const id = res.headers.get('location')!.split('/').at(-1)!
+    const page = await (await app.fetch(new Request(`https://auctions.pit.world/art/${id}`))).text()
+    expect(page).toContain('<video class="detail-image"')
+    const home = await (await app.fetch(new Request('https://auctions.pit.world/'))).text()
+    expect(home).toContain('<video src="/image/')
+    const ranged = await app.fetch(new Request(`https://auctions.pit.world/image/${id}`, { headers: { range: 'bytes=0-15' } }))
+    expect(ranged.status).toBe(206)
+    expect(ranged.headers.get('content-range')).toBe('bytes 0-15/64')
+    expect(ranged.headers.get('content-type')).toBe('video/quicktime')
+    expect(new Uint8Array(await ranged.arrayBuffer())).toEqual(mp4.slice(0, 16))
+    const bad = new FormData()
+    bad.set('title', 'Fake')
+    bad.set('artist', 'Ada Artist')
+    bad.set('permission', 'yes')
+    bad.set('image', new File(['<html>'], 'fake.mp4', { type: 'video/mp4' }))
+    expect((await app.fetch(new Request('https://auctions.pit.world/new', { method: 'POST', headers: { origin: 'https://auctions.pit.world' }, body: bad }), { ip: '203.0.113.31' })).status).toBe(415)
+    house.db.close()
+  })
 })

From c1c56c102f479e911f2c6305923bde470235738d Mon Sep 17 00:00:00 2001
From: Anthony Ettinger <anthony@profullstack.com>
Date: Tue, 3 Nov 2026 08:46:24 +0000
Subject: [PATCH 2/2] feat(auctions): topics (dahlias, mums, roses, sea cliffs)
 with a home page directory and drawn placeholders

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 src/auctions.ts       | 94 ++++++++++++++++++++++++++++++++++++-------
 test/auctions.test.ts | 51 +++++++++++++++++++++++
 2 files changed, 131 insertions(+), 14 deletions(-)

diff --git a/src/auctions.ts b/src/auctions.ts
index cd4e164..fff0a81 100644
--- a/src/auctions.ts
+++ b/src/auctions.ts
@@ -21,6 +21,7 @@ type Artwork = {
   medium: string
   description: string
   image_type: string
+  topic: string
   created_at: number
 }
 
@@ -42,6 +43,55 @@ function themePicker(theme: AuctionTheme, path: string) {
   return `<nav class="theme-pick" aria-label="Color theme">THEME ${AUCTION_THEMES.map((t) => `<a href="/theme/${t}?back=${back}" rel="nofollow" aria-current="${t === theme}"><i class="swatch-${t}" aria-hidden="true"></i>${THEME_LABEL[t]}</a>`).join('')}</nav>`
 }
 
+export const AUCTION_TOPICS = {
+  dahlias: { name: 'Dahlias', blurb: 'Dinner plates, pompons and cactus blooms in every medium.' },
+  mums: { name: 'Mums', blurb: 'Chrysanthemums: spiders, spoons and autumn color.' },
+  roses: { name: 'Roses', blurb: 'Garden roses, climbers and the classic bloom.' },
+  seacliffs: { name: 'Sea cliffs', blurb: 'Coastal bluffs, surf and the edge of the land.' },
+} as const
+export type AuctionTopic = keyof typeof AUCTION_TOPICS
+export const isTopic = (value: unknown): value is AuctionTopic => typeof value === 'string' && Object.hasOwn(AUCTION_TOPICS, value)
+const TOPIC_SLUGS = Object.keys(AUCTION_TOPICS) as AuctionTopic[]
+
+function mediaTag(item: Artwork, lazy = true) {
+  const src = `/image/${encodeURIComponent(item.id)}`
+  const label = `${esc(item.title)} by ${esc(item.artist)}`
+  return isVideo(item.image_type)
+    ? `<video src="${src}" muted loop autoplay playsinline preload="metadata" aria-label="${label}"></video>`
+    : `<img src="${src}" alt="${label}"${lazy ? ' loading="lazy"' : ''}>`
+}
+
+/** Drawn stand-in art for a topic with nothing on its walls yet. */
+const flower = (slug: AuctionTopic) => slug === 'seacliffs'
+  ? `<span class="flower-ph ph-seacliffs" aria-hidden="true"><span class="sky-sun"></span><span class="cliff"></span><span class="sea"></span></span>`
+  : `<span class="flower-ph ph-${slug}" aria-hidden="true"><span class="flower"></span><span class="stem"></span></span>`
+
+function topicDirectory(house: AuctionHouse) {
+  const cards = TOPIC_SLUGS.map((slug) => {
+    const t = AUCTION_TOPICS[slug]
+    const count = house.countTopic(slug)
+    const cover = house.list(1, slug)[0]
+    return `<a class="topic-card" href="/topics/${slug}"><span class="topic-cover">${cover ? mediaTag(cover) : flower(slug)}</span><span class="topic-body"><span class="eyebrow">${count ? `${count} ${count === 1 ? 'PIECE' : 'PIECES'}` : 'OPEN CALL'}</span><h3>${t.name}</h3><p>${t.blurb}</p></span></a>`
+  }).join('')
+  return `<section id="topics" class="topics-section"><div class="section-head"><div><p class="eyebrow">THE DIRECTORY</p><h2>Browse by topic</h2></div><a class="text-link" href="/topics">All topics <span aria-hidden="true">↗</span></a></div><div class="topic-grid">${cards}</div></section>`
+}
+
+function placeholderTiles(slug: AuctionTopic) {
+  const name = AUCTION_TOPICS[slug].name.replace(/s$/, '').toLowerCase()
+  return `<div class="gallery">${[1, 2, 3].map((n) => `<a class="art-card placeholder-card" href="/new?topic=${slug}"><span class="art-image placeholder-tile">${flower(slug)}<span class="placeholder-label">Your ${esc(name)} here</span></span><div class="art-info"><span class="eyebrow">OPEN SPOT ${String(n).padStart(2, '0')}</span><h3>Add a piece</h3><p>Photo or short video</p></div></a>`).join('')}</div>`
+}
+
+function topicPage(house: AuctionHouse, slug: AuctionTopic, theme: AuctionTheme) {
+  const t = AUCTION_TOPICS[slug]
+  const works = house.list(48, slug)
+  const others = TOPIC_SLUGS.filter((s) => s !== slug).map((s) => `<a href="/topics/${s}">${AUCTION_TOPICS[s].name}</a>`).join('')
+  return page(theme, t.name, `<main><section class="gallery-section topic-page"><a class="back-link" href="/#topics">← All topics</a><div class="section-head"><div><p class="eyebrow">TOPIC</p><h2>${t.name} <span class="count">${works.length.toString().padStart(2, '0')}</span></h2><p class="topic-lede">${t.blurb}</p></div><a class="text-link" href="/new?topic=${slug}">Submit a piece <span aria-hidden="true">↗</span></a></div>${works.length ? `<div class="gallery">${works.map(artworkCard).join('')}</div>` : placeholderTiles(slug)}<nav class="topic-chips" aria-label="Other topics">${others}</nav></section></main>`, `${t.name} in the Art Auctions House: ${t.blurb}`, `/topics/${slug}`)
+}
+
+function topicsIndex(house: AuctionHouse, theme: AuctionTheme) {
+  return page(theme, 'Topics', `<main class="topics-main">${topicDirectory(house).replace('<a class="text-link" href="/topics">All topics <span aria-hidden="true">↗</span></a>', '<a class="text-link" href="/new">Submit a piece <span aria-hidden="true">↗</span></a>')}</main>`, 'Browse the Art Auctions House by topic.', '/topics')
+}
+
 type ArtworkImage = { image_type: string; image: Uint8Array }
 
 const MAX_IMAGE_BYTES = 8 * 1024 * 1024
@@ -84,11 +134,11 @@ const cssHref = () => `/style.css?v=${(cssVersion ??= createHash('sha256').updat
 function page(theme: AuctionTheme, title: string, body: string, description = 'A home for art, artists and the stories behind every piece.', canonicalPath = '/') {
   return `<!doctype html>
 <html lang="en" data-theme="${theme}"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1,viewport-fit=cover"><meta name="theme-color" content="${THEME_COLOR[theme]}"><meta name="description" content="${esc(description)}"><link rel="stylesheet" href="${cssHref()}"><link rel="canonical" href="https://${AUCTION_HOST}${esc(canonicalPath)}"><title>${esc(title)} · Art Auctions</title></head>
-<body><header class="top"><a class="brand" href="/" aria-label="Art Auctions home"><span class="brand-mark">A</span><span>Art Auctions<small>THE HOUSE FOR ORIGINAL WORK</small></span></a><nav><a href="/#gallery">Browse art</a><a class="nav-cta" href="/new">Submit a piece <span aria-hidden="true">↗</span></a></nav></header>${body}<footer><a class="brand footer-brand" href="/"><span class="brand-mark">A</span><span>Art Auctions<small>ART, WITH A STORY.</small></span></a><p>A place for original work and the people who make it.</p>${themePicker(theme, canonicalPath)}</footer></body></html>`
+<body><header class="top"><a class="brand" href="/" aria-label="Art Auctions home"><span class="brand-mark">A</span><span>Art Auctions<small>THE HOUSE FOR ORIGINAL WORK</small></span></a><nav><a href="/#gallery">Browse art</a><a href="/topics">Topics</a><a class="nav-cta" href="/new">Submit a piece <span aria-hidden="true">↗</span></a></nav></header>${body}<footer><a class="brand footer-brand" href="/"><span class="brand-mark">A</span><span>Art Auctions<small>ART, WITH A STORY.</small></span></a><p>A place for original work and the people who make it.</p>${themePicker(theme, canonicalPath)}</footer></body></html>`
 }
 
 function artworkCard(item: Artwork) {
-  return `<article class="art-card"><a class="art-image" href="/art/${encodeURIComponent(item.id)}">${isVideo(item.image_type) ? `<video src="/image/${encodeURIComponent(item.id)}" muted loop autoplay playsinline preload="metadata" aria-label="${esc(item.title)} by ${esc(item.artist)}"></video>` : `<img src="/image/${encodeURIComponent(item.id)}" alt="${esc(item.title)} by ${esc(item.artist)}" loading="lazy">`}</a><div class="art-info"><span class="eyebrow">${esc(item.medium || 'ORIGINAL WORK')}</span><h3><a href="/art/${encodeURIComponent(item.id)}">${esc(item.title)}</a></h3><p>by ${esc(item.artist)}</p></div></article>`
+  return `<article class="art-card"><a class="art-image" href="/art/${encodeURIComponent(item.id)}">${mediaTag(item)}</a><div class="art-info"><span class="eyebrow">${esc(item.medium || 'ORIGINAL WORK')}</span><h3><a href="/art/${encodeURIComponent(item.id)}">${esc(item.title)}</a></h3><p>by ${esc(item.artist)}</p></div></article>`
 }
 
 function home(house: AuctionHouse, theme: AuctionTheme) {
@@ -99,16 +149,17 @@ function home(house: AuctionHouse, theme: AuctionTheme) {
   return page(theme, 'Art Auctions House', `<main>
     <section class="hero"><div class="hero-copy"><p class="eyebrow">ART · PEOPLE · STORIES</p><h1>Good art deserves<br><em>a good home.</em></h1><p class="lede">A new house for original art, made by people with something to say.</p><a class="button button-dark" href="/new">Bring us a piece <span aria-hidden="true">↗</span></a><p class="hero-note">Made for artists. Ready for your camera roll.</p></div><div class="hero-art" role="img" aria-label="Abstract art in a warm gallery"><div class="sun"></div><div class="shape shape-one"></div><div class="shape shape-two"></div><div class="shape shape-three"></div><div class="shape shape-four"></div><span class="art-caption">A house for art<br><b>Vol. 01 · Open call</b></span></div><span class="hero-index">01 / 01</span></section>
     <section id="gallery" class="gallery-section"><div class="section-head"><div><p class="eyebrow">FROM THE WALLS</p><h2>Works in the house <span class="count">${works.length.toString().padStart(2, '0')}</span></h2></div><a class="text-link" href="/new">Submit your work <span aria-hidden="true">↗</span></a></div>${gallery}</section>
+    ${topicDirectory(house)}
     <section class="invite"><div><p class="eyebrow">AN OPEN DOOR</p><h2>Make room<br><em>for your work.</em></h2></div><div class="invite-copy"><p>Send a photo and a few words about the piece. It will appear in the gallery with your name.</p><a class="button button-light" href="/new">Add your artwork <span aria-hidden="true">↗</span></a><small>Only share work you own or have permission to display. The gallery is public.</small></div></section>
   </main>`)
 }
 
-function formPage(theme: AuctionTheme, error = '') {
-  return page(theme, 'Submit artwork', `<main><section class="form-wrap"><a class="back-link" href="/">← Back to the house</a><p class="eyebrow">ADD A PIECE TO THE WALLS</p><h1>Show us<br><em>what you made.</em></h1><p class="form-intro">Share a clear photo or a short video and a little about the work. Your submission will appear in the public gallery.</p>${error ? `<p class="error" role="alert">${esc(error)}</p>` : ''}<form class="art-form" method="post" action="/new" enctype="multipart/form-data"><div class="hp" aria-hidden="true"><label>Leave this empty<input name="website" tabindex="-1" autocomplete="off"></label></div><label class="field"><span>Title <b>*</b></span><input name="title" maxlength="120" autocomplete="off" required placeholder="What is this piece called?"></label><label class="field"><span>Artist name <b>*</b></span><input name="artist" maxlength="80" autocomplete="name" required placeholder="The name you want shown"></label><label class="field"><span>Medium <small>optional</small></span><input name="medium" maxlength="80" autocomplete="off" placeholder="Oil on canvas, ceramic, collage…"></label><label class="field"><span>About the piece <small>optional</small></span><textarea name="description" rows="4" maxlength="1600" placeholder="A few words about the work"></textarea></label><label class="field upload-field"><span>Photo or video of your work <b>*</b></span><input name="image" type="file" accept="image/*,video/mp4,video/webm,video/quicktime,.mp4,.mov,.webm" required><small>Photos: JPEG, PNG, WebP, AVIF or HEIC up to 8 MB. Videos: MP4, MOV or WebM up to 25 MB.</small></label><label class="permission"><input type="checkbox" name="permission" value="yes" required><span>I own this work or have permission to share it, and I agree to display the photo and details publicly.</span></label><button class="button button-dark submit-button" type="submit">Add to the gallery <span aria-hidden="true">↗</span></button><p class="form-foot">Submissions are public as soon as they are added. Bidding and payment features are not active yet.</p></form></section></main>`, undefined, '/new')
+function formPage(theme: AuctionTheme, error = '', topic = '') {
+  return page(theme, 'Submit artwork', `<main><section class="form-wrap"><a class="back-link" href="/">← Back to the house</a><p class="eyebrow">ADD A PIECE TO THE WALLS</p><h1>Show us<br><em>what you made.</em></h1><p class="form-intro">Share a clear photo or a short video and a little about the work. Your submission will appear in the public gallery.</p>${error ? `<p class="error" role="alert">${esc(error)}</p>` : ''}<form class="art-form" method="post" action="/new" enctype="multipart/form-data"><div class="hp" aria-hidden="true"><label>Leave this empty<input name="website" tabindex="-1" autocomplete="off"></label></div><label class="field"><span>Title <b>*</b></span><input name="title" maxlength="120" autocomplete="off" required placeholder="What is this piece called?"></label><label class="field"><span>Artist name <b>*</b></span><input name="artist" maxlength="80" autocomplete="name" required placeholder="The name you want shown"></label><label class="field"><span>Medium <small>optional</small></span><input name="medium" maxlength="80" autocomplete="off" placeholder="Oil on canvas, ceramic, collage…"></label><label class="field"><span>Topic <small>optional</small></span><select name="topic"><option value="">No topic</option>${TOPIC_SLUGS.map((slug) => `<option value="${slug}"${slug === topic ? ' selected' : ''}>${AUCTION_TOPICS[slug].name}</option>`).join('')}</select></label><label class="field"><span>About the piece <small>optional</small></span><textarea name="description" rows="4" maxlength="1600" placeholder="A few words about the work"></textarea></label><label class="field upload-field"><span>Photo or video of your work <b>*</b></span><input name="image" type="file" accept="image/*,video/mp4,video/webm,video/quicktime,.mp4,.mov,.webm" required><small>Photos: JPEG, PNG, WebP, AVIF or HEIC up to 8 MB. Videos: MP4, MOV or WebM up to 25 MB.</small></label><label class="permission"><input type="checkbox" name="permission" value="yes" required><span>I own this work or have permission to share it, and I agree to display the photo and details publicly.</span></label><button class="button button-dark submit-button" type="submit">Add to the gallery <span aria-hidden="true">↗</span></button><p class="form-foot">Submissions are public as soon as they are added. Bidding and payment features are not active yet.</p></form></section></main>`, undefined, '/new')
 }
 
 function detail(item: Artwork, theme: AuctionTheme) {
-  return page(theme, item.title, `<main><section class="detail-wrap"><a class="back-link" href="/#gallery">← Back to the gallery</a><div class="detail-grid">${isVideo(item.image_type) ? `<video class="detail-image" src="/image/${encodeURIComponent(item.id)}" controls playsinline preload="metadata" aria-label="${esc(item.title)} by ${esc(item.artist)}"></video>` : `<img class="detail-image" src="/image/${encodeURIComponent(item.id)}" alt="${esc(item.title)} by ${esc(item.artist)}">`}<div class="detail-copy"><p class="eyebrow">${esc(item.medium || 'ORIGINAL WORK')}</p><h1>${esc(item.title)}</h1><p class="artist">by ${esc(item.artist)}</p>${item.description ? `<p class="detail-description">${esc(item.description).replace(/\n/g, '<br>')}</p>` : ''}<a class="text-link" href="/new">Add your work <span aria-hidden="true">↗</span></a><p class="form-foot">Bidding and payment features are not active yet.</p></div></div></section></main>`, 'A piece in the Art Auctions House gallery.', `/art/${encodeURIComponent(item.id)}`)
+  return page(theme, item.title, `<main><section class="detail-wrap"><a class="back-link" href="/#gallery">← Back to the gallery</a><div class="detail-grid">${isVideo(item.image_type) ? `<video class="detail-image" src="/image/${encodeURIComponent(item.id)}" controls playsinline preload="metadata" aria-label="${esc(item.title)} by ${esc(item.artist)}"></video>` : `<img class="detail-image" src="/image/${encodeURIComponent(item.id)}" alt="${esc(item.title)} by ${esc(item.artist)}">`}<div class="detail-copy"><p class="eyebrow">${esc(item.medium || 'ORIGINAL WORK')}</p><h1>${esc(item.title)}</h1><p class="artist">by ${esc(item.artist)}</p>${isTopic(item.topic) ? `<p class="topic-chips detail-topic"><a href="/topics/${item.topic}">${AUCTION_TOPICS[item.topic].name}</a></p>` : ''}${item.description ? `<p class="detail-description">${esc(item.description).replace(/\n/g, '<br>')}</p>` : ''}<a class="text-link" href="/new">Add your work <span aria-hidden="true">↗</span></a><p class="form-foot">Bidding and payment features are not active yet.</p></div></div></section></main>`, 'A piece in the Art Auctions House gallery.', `/art/${encodeURIComponent(item.id)}`)
 }
 
 export class AuctionHouse {
@@ -129,24 +180,33 @@ export class AuctionHouse {
       image BLOB NOT NULL,
       created_at INTEGER NOT NULL
     ); CREATE INDEX IF NOT EXISTS auction_artworks_created ON auction_artworks(created_at DESC);`)
+    const columns = this.db.query<{ name: string }, []>('PRAGMA table_info(auction_artworks)').all().map((c) => c.name)
+    if (!columns.includes('topic')) this.db.exec("ALTER TABLE auction_artworks ADD COLUMN topic TEXT NOT NULL DEFAULT ''")
+    this.db.exec('CREATE INDEX IF NOT EXISTS auction_artworks_topic ON auction_artworks(topic, created_at DESC)')
   }
 
-  list(limit = 48): Artwork[] {
-    return this.db.query<Artwork, [number]>('SELECT id, title, artist, medium, description, image_type, created_at FROM auction_artworks ORDER BY created_at DESC LIMIT ?').all(Math.max(1, Math.min(100, limit)))
+  list(limit = 48, topic?: AuctionTopic): Artwork[] {
+    const n = Math.max(1, Math.min(100, limit))
+    if (topic) return this.db.query<Artwork, [string, number]>('SELECT id, title, artist, medium, description, image_type, topic, created_at FROM auction_artworks WHERE topic = ? ORDER BY created_at DESC LIMIT ?').all(topic, n)
+    return this.db.query<Artwork, [number]>('SELECT id, title, artist, medium, description, image_type, topic, created_at FROM auction_artworks ORDER BY created_at DESC LIMIT ?').all(n)
+  }
+
+  countTopic(topic: AuctionTopic): number {
+    return this.db.query<{ n: number }, [string]>('SELECT COUNT(*) AS n FROM auction_artworks WHERE topic = ?').get(topic)?.n ?? 0
   }
 
   get(id: string): Artwork | null {
-    return this.db.query<Artwork, [string]>('SELECT id, title, artist, medium, description, image_type, created_at FROM auction_artworks WHERE id = ?').get(id) ?? null
+    return this.db.query<Artwork, [string]>('SELECT id, title, artist, medium, description, image_type, topic, created_at FROM auction_artworks WHERE id = ?').get(id) ?? null
   }
 
   image(id: string): ArtworkImage | null {
     return this.db.query<ArtworkImage, [string]>('SELECT image_type, image FROM auction_artworks WHERE id = ?').get(id) ?? null
   }
 
-  add(input: { title: string; artist: string; medium: string; description: string; imageType: string; image: Uint8Array }, now = Date.now()): string {
+  add(input: { title: string; artist: string; medium: string; description: string; imageType: string; image: Uint8Array; topic?: AuctionTopic | '' }, now = Date.now()): string {
     const id = randomBytes(12).toString('base64url')
-    this.db.query('INSERT INTO auction_artworks (id, title, artist, medium, description, image_type, image, created_at) VALUES (?, ?, ?, ?, ?, ?, ?, ?)')
-      .run(id, input.title, input.artist, input.medium, input.description, input.imageType, input.image, now)
+    this.db.query('INSERT INTO auction_artworks (id, title, artist, medium, description, image_type, image, topic, created_at) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)')
+      .run(id, input.title, input.artist, input.medium, input.description, input.imageType, input.image, input.topic ?? '', now)
     return id
   }
 
@@ -195,7 +255,12 @@ export function createAuctionApp(house: AuctionHouse) {
     const item = house.get(c.req.param('id'))
     return item ? c.html(detail(item, themeOf(c))) : c.html(page(themeOf(c), 'Not found', '<main><section class="empty"><h1>This piece is not here.</h1><a class="button button-dark" href="/">Back to the house</a></section></main>'), 404)
   })
-  app.get('/new', (c) => c.html(formPage(themeOf(c))))
+  app.get('/new', (c) => { const topic = c.req.query('topic'); return c.html(formPage(themeOf(c), '', isTopic(topic) ? topic : '')) })
+  app.get('/topics', (c) => c.html(topicsIndex(house, themeOf(c))))
+  app.get('/topics/:slug', (c) => {
+    const slug = c.req.param('slug').toLowerCase()
+    return isTopic(slug) ? c.html(topicPage(house, slug, themeOf(c))) : c.html(page(themeOf(c), 'Not found', '<main><section class="empty"><h1>That topic is not in the house yet.</h1><a class="button button-dark" href="/topics">See all topics</a></section></main>'), 404)
+  })
   app.post('/new', async (c) => {
     const host = String(c.req.header('host') ?? new URL(c.req.url).host).trim().toLowerCase().replace(/:\d+$/, '')
     const origin = c.req.header('origin')
@@ -220,6 +285,7 @@ export function createAuctionApp(house: AuctionHouse) {
     const title = clean(body.title, 120)
     const artist = clean(body.artist, 80)
     const medium = clean(body.medium, 80)
+    const topic = isTopic(body.topic) ? body.topic : ''
     const description = clean(body.description, 1600)
     if (!title || !artist) return c.html(formPage(theme, 'Add a title and artist name to continue.'), 400)
     if (body.permission !== 'yes') return c.html(formPage(theme, 'Please confirm you have permission to share this work.'), 400)
@@ -240,7 +306,7 @@ export function createAuctionApp(house: AuctionHouse) {
       if (!sniffed || !VIDEO_TYPES.has(sniffed)) return c.html(formPage(theme, 'That file does not look like an MP4, MOV or WebM video.'), 415)
       imageType = sniffed
     } else if (!validImage(imageType, bytes)) return c.html(formPage(theme, 'That file does not look like a supported image.'), 415)
-    const id = house.add({ title, artist, medium, description, imageType, image: bytes })
+    const id = house.add({ title, artist, medium, description, imageType, image: bytes, topic })
     return c.redirect(`/art/${encodeURIComponent(id)}`, 303)
   })
   app.get('/', (c) => c.html(home(house, themeOf(c))))
@@ -253,4 +319,4 @@ const AUCTIONS_CSS = `/* Themes: "warm" (the original cream and green house look
 /* Blue must come after the :root default: equal specificity, so source order decides. */
 html[data-theme=blue]{--ink:#16213a;--muted:#5f6b82;--soft:#46526a;--paper:#eef3fa;--white:#fbfdff;--green:#1f4f8f;--on-green:#f6f9ff;--on-green-accent:#9cc7ff;--line:#d2dcea;--accent:#2f7fe0;--frame:#dbe4f1;--panel:#e2eaf5;--art-1:#c9d8ee;--art-2:#8eaad3;--art-3:#3d6aa8;--art-4:#13294d;--art-shadow:#d6e1f1;--art-frame:#f2f7ff;--art-sun:#f1f5fb;--shape-1:#183865;--shape-2:#4b7fc4;--shape-3:#dbe7f6;--shape-4:#7aa3d9;--invite-eyebrow:#a8c9f2;--invite-em:#c6dcf8;--invite-small:#c5d1e4;--input-line:#c0cbdc;--input-bg:#fff;--upload-line:#98a8c2;--upload-bg:#f4f7fc;--error-bg:#fbe4e4;--error-ink:#8a2b2b;--focus:#3b82f6}
 .theme-pick{display:flex;align-items:center;gap:6px;color:var(--muted);font-size:11px;letter-spacing:.08em}.theme-pick a{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border:1px solid var(--line);border-radius:999px;color:var(--ink)}.theme-pick a[aria-current=true]{border-color:var(--green);font-weight:700}.theme-pick i{display:inline-block;width:10px;height:10px;border-radius:50%}.swatch-blue{background:#1f4f8f}.swatch-warm{background:#384b36}
-:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink)}a{color:inherit;text-decoration:none}.top{height:82px;padding:0 max(6vw,24px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-family:Georgia,serif;font-size:20px;line-height:1}.brand small{display:block;margin-top:7px;font:9px/1.1 ui-sans-serif,system-ui,sans-serif;letter-spacing:.15em;color:var(--muted)}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border:1px solid var(--green);border-radius:50%;color:var(--green);font:italic 24px Georgia,serif}.top nav{display:flex;align-items:center;gap:32px;font-size:13px}.top nav a:first-child{color:var(--muted)}.nav-cta,.text-link{font-weight:650}.nav-cta span,.text-link span,.button span{margin-left:8px;color:var(--accent)}main{max-width:1440px;margin:0 auto;padding:0 max(6vw,24px)}.hero{position:relative;min-height:540px;padding:76px 0 86px;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:8%;border-bottom:1px solid var(--line)}.hero-copy{position:relative;z-index:1}.eyebrow{margin:0 0 18px;color:var(--green);font-size:10px;font-weight:750;letter-spacing:.19em}.hero h1,.form-wrap h1{margin:0;font:clamp(52px,6.5vw,88px)/.96 Georgia,"Times New Roman",serif;letter-spacing:-.055em;font-weight:400}.hero h1 em,.form-wrap h1 em,.invite h2 em{color:var(--green);font-weight:400}.lede{max-width:370px;margin:24px 0 28px;color:var(--soft);font:18px/1.55 Georgia,serif}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border:0;border-radius:2px;font:650 13px ui-sans-serif,system-ui,sans-serif;cursor:pointer}.button-dark{background:var(--green);color:var(--on-green)}.button-dark span{color:var(--on-green-accent)}.button-light{background:var(--paper);color:var(--ink)}.hero-note{margin:17px 0 0;color:var(--muted);font-size:11px}.hero-art{position:relative;overflow:hidden;width:min(100%,500px);height:380px;justify-self:end;background:linear-gradient(135deg,var(--art-1) 0%,var(--art-2) 47%,var(--art-3) 47%,var(--art-4) 100%);box-shadow:20px 24px 0 var(--art-shadow)}.hero-art:before{content:"";position:absolute;inset:18px;border:1px solid var(--art-frame);opacity:.7}.sun{position:absolute;top:46px;right:78px;width:132px;height:132px;border-radius:50%;background:var(--art-sun)}.shape{position:absolute;bottom:-50px;border-radius:50% 50% 0 0}.shape-one{left:4%;width:65%;height:63%;background:var(--shape-1);transform:rotate(-17deg)}.shape-two{right:-12%;width:62%;height:75%;background:var(--shape-2);transform:rotate(15deg)}.shape-three{left:27%;bottom:-28%;width:48%;height:65%;background:var(--shape-3);transform:rotate(33deg)}.shape-four{left:52%;bottom:-22%;width:30%;height:61%;background:var(--shape-4);transform:rotate(-24deg)}.art-caption{position:absolute;left:34px;bottom:28px;color:white;font:italic 18px/1.45 Georgia,serif}.art-caption b{font:10px ui-sans-serif,system-ui,sans-serif;letter-spacing:.12em;text-transform:uppercase}.hero-index{position:absolute;right:0;bottom:22px;color:var(--muted);font-size:10px;letter-spacing:.15em}.gallery-section{padding:74px 0 92px}.section-head{display:flex;align-items:end;justify-content:space-between;margin-bottom:30px}.section-head .eyebrow{margin-bottom:11px}.section-head h2,.invite h2{margin:0;font:clamp(30px,4vw,48px)/1.1 Georgia,serif;font-weight:400;letter-spacing:-.03em}.count{margin-left:7px;vertical-align:top;color:var(--muted);font:11px ui-sans-serif,system-ui,sans-serif;letter-spacing:0}.text-link{font-size:12px}.gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px 22px}.art-card{min-width:0}.art-image{display:block;overflow:hidden;aspect-ratio:4/4.7;background:var(--frame)}.art-image img,.art-image video{width:100%;height:100%;display:block;object-fit:cover;transition:transform .35s}.art-card:hover img,.art-card:hover video{transform:scale(1.025)}.art-info{padding:16px 1px}.art-info .eyebrow{font-size:9px;margin:0 0 8px}.art-info h3{margin:0;font:23px/1.2 Georgia,serif;font-weight:400}.art-info p{margin:7px 0 0;color:var(--muted);font:14px Georgia,serif}.empty{padding:72px 24px;text-align:center;background:var(--panel)}.empty-stamp{display:grid;place-items:center;width:55px;height:55px;margin:0 auto 20px;border:1px solid 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p{font-size:12px}.invite{grid-template-columns:1fr;gap:24px;padding-top:56px;padding-bottom:58px}.form-wrap{padding:42px 0 72px}.back-link{margin-bottom:36px}.art-form{padding:20px}.detail-grid{grid-template-columns:1fr;gap:30px}.detail-image{max-height:65vh}footer{gap:18px;align-items:flex-start;flex-wrap:wrap}.theme-pick{flex-basis:100%}footer p{max-width:150px;font-size:12px}}@media(max-width:380px){.top{padding-inline:16px}.top nav{gap:12px}.top nav a:first-child{display:none}main{padding-inline:16px}.invite{margin-inline:-16px;padding-inline:16px}.hero-art{height:250px}.art-form{padding:16px}footer{padding-inline:16px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}`
+:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink)}a{color:inherit;text-decoration:none}.top{height:82px;padding:0 max(6vw,24px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-family:Georgia,serif;font-size:20px;line-height:1}.brand small{display:block;margin-top:7px;font:9px/1.1 ui-sans-serif,system-ui,sans-serif;letter-spacing:.15em;color:var(--muted)}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border:1px solid var(--green);border-radius:50%;color:var(--green);font:italic 24px Georgia,serif}.top nav{display:flex;align-items:center;gap:32px;font-size:13px}.top nav a:first-child{color:var(--muted)}.nav-cta,.text-link{font-weight:650}.nav-cta 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span{color:var(--on-green-accent)}.button-light{background:var(--paper);color:var(--ink)}.hero-note{margin:17px 0 0;color:var(--muted);font-size:11px}.hero-art{position:relative;overflow:hidden;width:min(100%,500px);height:380px;justify-self:end;background:linear-gradient(135deg,var(--art-1) 0%,var(--art-2) 47%,var(--art-3) 47%,var(--art-4) 100%);box-shadow:20px 24px 0 var(--art-shadow)}.hero-art:before{content:"";position:absolute;inset:18px;border:1px solid var(--art-frame);opacity:.7}.sun{position:absolute;top:46px;right:78px;width:132px;height:132px;border-radius:50%;background:var(--art-sun)}.shape{position:absolute;bottom:-50px;border-radius:50% 50% 0 0}.shape-one{left:4%;width:65%;height:63%;background:var(--shape-1);transform:rotate(-17deg)}.shape-two{right:-12%;width:62%;height:75%;background:var(--shape-2);transform:rotate(15deg)}.shape-three{left:27%;bottom:-28%;width:48%;height:65%;background:var(--shape-3);transform:rotate(33deg)}.shape-four{left:52%;bottom:-22%;width:30%;height:61%;background:var(--shape-4);transform:rotate(-24deg)}.art-caption{position:absolute;left:34px;bottom:28px;color:white;font:italic 18px/1.45 Georgia,serif}.art-caption b{font:10px ui-sans-serif,system-ui,sans-serif;letter-spacing:.12em;text-transform:uppercase}.hero-index{position:absolute;right:0;bottom:22px;color:var(--muted);font-size:10px;letter-spacing:.15em}.gallery-section{padding:74px 0 92px}.section-head{display:flex;align-items:end;justify-content:space-between;margin-bottom:30px}.section-head .eyebrow{margin-bottom:11px}.section-head h2,.invite h2{margin:0;font:clamp(30px,4vw,48px)/1.1 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var(--green);border-radius:50%;color:var(--green);font-size:25px}.empty h3{margin:0;font:30px Georgia,serif;font-weight:400}.empty p{max-width:390px;margin:12px auto 22px;color:var(--muted);font:15px/1.6 Georgia,serif}.invite{margin:0 calc(-1 * max(6vw,24px));padding:76px max(6vw,24px);background:var(--green);color:var(--on-green);display:grid;grid-template-columns:1fr 1fr;gap:8%;align-items:center}.invite .eyebrow{color:var(--invite-eyebrow)}.invite h2 em{color:var(--invite-em)}.invite-copy p{max-width:360px;margin:0 0 24px;font:18px/1.55 Georgia,serif}.invite-copy small{display:block;max-width:390px;margin-top:15px;color:var(--invite-small);font-size:11px;line-height:1.5}.form-wrap{max-width:620px;margin:0 auto;padding:64px 0 100px}.back-link{display:inline-block;margin-bottom:52px;color:var(--muted);font-size:12px}.form-wrap .eyebrow{margin-bottom:16px}.form-wrap h1{font-size:clamp(48px,8vw,70px)}.form-intro{max-width:460px;margin:20px 0 30px;color:var(--soft);font:17px/1.6 Georgia,serif}.art-form{padding:30px;background:var(--white);border:1px solid var(--line)}.field{display:block;margin-bottom:21px}.field>span{display:block;margin-bottom:8px;font-size:12px;font-weight:700}.field b{color:var(--accent)}.field small{margin-left:7px;color:var(--muted);font-weight:400}.field input:not([type=file]),.field textarea{display:block;width:100%;min-height:48px;padding:12px 13px;border:1px solid var(--input-line);border-radius:2px;background:var(--input-bg);color:var(--ink);font:15px ui-sans-serif,system-ui,sans-serif}.field textarea{min-height:120px;resize:vertical}.upload-field input[type=file]{display:block;width:100%;min-height:54px;padding:13px;border:1px dashed var(--upload-line);background:var(--upload-bg);color:var(--ink);font-size:13px}.upload-field>small{display:block;margin:8px 0 0;color:var(--muted);font-size:11px}.permission{display:flex;gap:11px;align-items:flex-start;margin:24px 0;color:var(--soft);font-size:12px;line-height:1.55}.permission input{width:18px;height:18px;margin:0;flex:0 0 auto;accent-color:var(--green)}.submit-button{width:100%}.form-foot{margin:16px 0 0;color:var(--muted);font-size:11px;line-height:1.55}.error{padding:12px 14px;background:var(--error-bg);color:var(--error-ink);font-size:13px}.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}.detail-wrap{padding:48px 0 90px}.detail-wrap .back-link{margin-bottom:30px}.detail-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(280px,.75fr);gap:8%;align-items:start}.detail-image{display:block;width:100%;max-height:78vh;object-fit:contain;background:var(--frame)}.detail-copy{padding:10px 0}.detail-copy h1{margin:0;font:clamp(42px,6vw,72px)/1 Georgia,serif;font-weight:400;letter-spacing:-.04em}.detail-copy .artist{margin:13px 0 28px;color:var(--muted);font:18px Georgia,serif}.detail-description{margin:0 0 28px;font:16px/1.7 Georgia,serif}.footer-brand{font-size:17px}.footer-brand .brand-mark{width:33px;height:33px;font-size:21px}footer{display:flex;justify-content:space-between;align-items:center;padding:28px max(6vw,24px);border-top:1px solid var(--line)}footer p{max-width:240px;color:var(--muted);font:13px/1.5 Georgia,serif}.field select{display:block;width:100%;min-height:48px;padding:12px 13px;border:1px solid var(--input-line);border-radius:2px;background:var(--input-bg);color:var(--ink);font:15px ui-sans-serif,system-ui,sans-serif}.topics-section{padding:0 0 92px}.topic-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:22px}.topic-card{display:flex;flex-direction:column;border:1px solid var(--line);background:var(--white);transition:border-color .2s}.topic-card:hover{border-color:var(--green)}.topic-cover{position:relative;display:block;overflow:hidden;aspect-ratio:4/3;background:var(--panel)}.topic-cover img,.topic-cover video{width:100%;height:100%;display:block;object-fit:cover}.topic-body{display:block;padding:18px 20px 22px}.topic-body .eyebrow{display:block;margin:0 0 8px;font-size:9px}.topic-body h3{margin:0;font:26px/1.15 Georgia,serif;font-weight:400}.topic-body p{margin:8px 0 0;color:var(--muted);font:14px/1.5 Georgia,serif}.topic-lede{max-width:460px;margin:10px 0 0;color:var(--soft);font:16px/1.55 Georgia,serif}.topic-page .back-link{margin-bottom:30px}.topic-chips{display:flex;flex-wrap:wrap;gap:8px;margin:34px 0 0}.topic-chips a{padding:7px 13px;border:1px solid var(--line);border-radius:999px;font-size:12px;font-weight:650}.topic-chips a:hover{border-color:var(--green)}.detail-topic{margin:-14px 0 24px}.flower-ph{position:absolute;inset:0;display:block;background:radial-gradient(circle at 50% 120%,var(--frame),var(--panel) 70%)}.flower{position:absolute;left:50%;top:42%;width:46%;aspect-ratio:1;transform:translate(-50%,-50%);border-radius:50%;z-index:1}.flower:after{content:"";position:absolute;inset:36%;border-radius:50%;background:var(--c3)}.stem{position:absolute;left:calc(50% - 2px);top:64%;width:4px;height:40%;background:#5f7d4f;border-radius:2px}.stem:before{content:"";position:absolute;left:4px;top:30%;width:34px;height:16px;border-radius:0 100% 0 100%;background:#6f8f5c}.ph-dahlias .flower{--c3:#f2c35b;background:repeating-conic-gradient(#c2416b 0 9deg,#e98aa6 9deg 18deg);box-shadow:0 0 0 10px #d65f86 inset}.ph-mums .flower{--c3:#9a6a22;background:repeating-conic-gradient(#d9962b 0 5deg,#f6cf6a 5deg 10deg)}.ph-roses .flower{--c3:transparent;background:radial-gradient(circle,#6e1028 0 10%,#c8455e 11% 22%,#9e1f3a 23% 36%,#c8455e 37% 50%,#9e1f3a 51% 70%)}.ph-seacliffs{background:linear-gradient(#cfe0ec 0 58%,#8fb3cc 58%)}.sky-sun{position:absolute;right:20%;top:16%;width:16%;aspect-ratio:1;border-radius:50%;background:#f6d48a}.cliff{position:absolute;left:0;bottom:22%;width:58%;height:62%;background:#8a6f55;clip-path:polygon(0 18%,30% 6%,58% 14%,82% 30%,100% 100%,0 100%);box-shadow:inset -14px 0 0 #6f5640}.cliff:before{content:"";position:absolute;left:0;top:0;width:100%;height:18%;background:#6f8f5c;clip-path:polygon(0 100%,0 0,30% 0,58% 40%,82% 100%)}.sea{position:absolute;left:0;right:0;bottom:0;height:24%;background:repeating-linear-gradient(170deg,#4f7fa6 0 8px,#5f90b6 8px 16px)}.placeholder-tile{position:relative;border:1px dashed var(--upload-line)}.placeholder-label{position:absolute;left:50%;bottom:16px;transform:translateX(-50%);padding:6px 14px;border-radius:999px;background:var(--white);color:var(--soft);font:italic 14px Georgia,serif;white-space:nowrap;z-index:2}.topics-main .topics-section{padding-top:64px}.placeholder-card .art-info h3{color:var(--muted)}input:focus-visible,select:focus-visible,textarea:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid var(--focus);outline-offset:3px}@media(max-width:760px){.top nav a:first-child{display:none}.topics-main .topics-section{padding-top:42px}.topic-grid{grid-template-columns:1fr;gap:16px}.topic-cover{aspect-ratio:16/9}.top{height:70px}.top nav{gap:16px;font-size:11px}.brand{font-size:17px}.brand small{font-size:8px}.hero{min-height:auto;padding:55px 0 65px;grid-template-columns:1fr;gap:38px}.hero h1{font-size:clamp(50px,13vw,76px)}.hero-art{width:100%;height:clamp(250px,75vw,380px);justify-self:stretch}.hero-index{bottom:18px}.gallery-section{padding:58px 0 68px}.section-head{align-items:start;gap:12px}.section-head .text-link{padding-top:20px;font-size:11px}.gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 13px}.art-info h3{font-size:18px}.art-info p{font-size:12px}.invite{grid-template-columns:1fr;gap:24px;padding-top:56px;padding-bottom:58px}.form-wrap{padding:42px 0 72px}.back-link{margin-bottom:36px}.art-form{padding:20px}.detail-grid{grid-template-columns:1fr;gap:30px}.detail-image{max-height:65vh}footer{gap:18px;align-items:flex-start;flex-wrap:wrap}.theme-pick{flex-basis:100%}footer p{max-width:150px;font-size:12px}}@media(max-width:380px){.top{padding-inline:16px}.top nav{gap:12px}.top nav a:first-child{display:none}main{padding-inline:16px}.invite{margin-inline:-16px;padding-inline:16px}.hero-art{height:250px}.art-form{padding:16px}footer{padding-inline:16px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}`
diff --git a/test/auctions.test.ts b/test/auctions.test.ts
index 2cc9811..1520ecd 100644
--- a/test/auctions.test.ts
+++ b/test/auctions.test.ts
@@ -171,4 +171,55 @@ describe('Art Auctions House', () => {
     expect((await app.fetch(new Request('https://auctions.pit.world/new', { method: 'POST', headers: { origin: 'https://auctions.pit.world' }, body: bad }), { ip: '203.0.113.31' })).status).toBe(415)
     house.db.close()
   })
+
+  it('files a piece under a topic, lists topic pages and shows placeholders for empty ones', async () => {
+    const house = new AuctionHouse()
+    const app = createAuctionApp(house)
+    const home0 = await (await app.fetch(new Request('https://auctions.pit.world/'))).text()
+    for (const slug of ['dahlias', 'mums', 'roses', 'seacliffs']) expect(home0).toContain(`href="/topics/${slug}"`)
+    const empty = await (await app.fetch(new Request('https://auctions.pit.world/topics/roses'))).text()
+    expect(empty).toContain('Your rose here')
+    expect(empty).toContain('href="/new?topic=roses"')
+    expect((await (await app.fetch(new Request('https://auctions.pit.world/topics/seacliffs'))).text())).toContain('Your sea cliff here')
+    expect(await (await app.fetch(new Request('https://auctions.pit.world/new?topic=mums'))).text()).toContain('value="mums" selected')
+
+    const form = new FormData()
+    form.set('title', 'Cafe au lait')
+    form.set('artist', 'Ada Artist')
+    form.set('topic', 'dahlias')
+    form.set('permission', 'yes')
+    form.set('image', new File([png], 'dahlia.png', { type: 'image/png' }))
+    const res = await app.fetch(new Request('https://auctions.pit.world/new', { method: 'POST', headers: { origin: 'https://auctions.pit.world' }, body: form }), { ip: '203.0.113.40' })
+    expect(res.status).toBe(303)
+    const dahlias = await (await app.fetch(new Request('https://auctions.pit.world/topics/dahlias'))).text()
+    expect(dahlias).toContain('Cafe au lait')
+    expect(dahlias).not.toContain('Your dahlia here')
+    expect(await (await app.fetch(new Request('https://auctions.pit.world/topics/mums'))).text()).not.toContain('Cafe au lait')
+    expect(await (await app.fetch(new Request(`https://auctions.pit.world${res.headers.get('location')}`))).text()).toContain('href="/topics/dahlias"')
+    expect((await app.fetch(new Request('https://auctions.pit.world/topics/tulips'))).status).toBe(404)
+    expect((await app.fetch(new Request('https://auctions.pit.world/topics'))).status).toBe(200)
+
+    const bogus = new FormData()
+    bogus.set('title', 'Sneaky')
+    bogus.set('artist', 'Ada Artist')
+    bogus.set('topic', '<script>')
+    bogus.set('permission', 'yes')
+    bogus.set('image', new File([png], 'x.png', { type: 'image/png' }))
+    expect((await app.fetch(new Request('https://auctions.pit.world/new', { method: 'POST', headers: { origin: 'https://auctions.pit.world' }, body: bogus }), { ip: '203.0.113.41' })).status).toBe(303)
+    expect(house.list().find((w) => w.title === 'Sneaky')!.topic).toBe('')
+    house.db.close()
+  })
+
+  it('adds the topic column to a database made before topics existed', () => {
+    const { Database } = require('bun:sqlite')
+    const path = `${require('node:os').tmpdir()}/auctions-migrate-${process.pid}.db`
+    const old = new Database(path, { create: true })
+    old.exec("CREATE TABLE auction_artworks (id TEXT PRIMARY KEY, title TEXT NOT NULL, artist TEXT NOT NULL, medium TEXT NOT NULL DEFAULT '', description TEXT NOT NULL DEFAULT '', image_type TEXT NOT NULL, image BLOB NOT NULL, created_at INTEGER NOT NULL)")
+    old.query("INSERT INTO auction_artworks VALUES ('a', 'Logo', 'Ada', '', '', 'image/png', x'00', 1)").run()
+    old.close()
+    const house = new AuctionHouse(path)
+    expect(house.get('a')!.topic).toBe('')
+    house.db.close()
+    require('node:fs').rmSync(path, { force: true }); require('node:fs').rmSync(`${path}-wal`, { force: true }); require('node:fs').rmSync(`${path}-shm`, { force: true })
+  })
 })