feat(deck): add Slidev presentation template

.ai/README.md

@@ -14,7 +14,7 @@ Workflow-specific AI prompts live in [`.claude/commands/`](../.claude/commands/)
 | --- | --- |
 | `add-solution.md` | Generate a TypeScript solution walkthrough for a challenge from any input format |
 | `a11y-audit.md` | Accessibility audit using persona simulation, semantic code review, and axe output |
-| `create-presentation.md` | Create a Reveal.js or PowerPoint presentation deck |
+| `create-presentation.md` | Create a Slidev or PowerPoint presentation deck |
 | `keyboard.md` | Keyboard accessibility rules for interactive UI elements |
 | `navigation.md` | Navigation landmark structure and accessibility rules |
 | `progressive-enhancement.md` | Progressive enhancement rules for web features |
@@ -30,5 +30,5 @@ Reusable files for contributors.
 | --- | --- |
 | `solution/beginner.ts` | Annotated TypeScript template for writing a solution walkthrough |
 | `generate-pptx.mjs` | Script that generates `public/downloads/offon-deck-template.pptx` |
-| `generate-reveal-zip.mjs` | Script that generates `public/downloads/offon-reveal-template.zip` |
+| `generate-slidev-zip.mjs` | Script that generates `public/downloads/offon-slidev-template.zip` |
 | `bg.png` | Pre-rendered firefly gradient background for presentation slides |

.ai/templates/generate-slidev-zip.mjs

@@ -0,0 +1,45 @@
+/**
+ * Bundles the pre-built Slidev template from public/decks/template/ into a
+ * self-contained zip. Users download, unzip, and open index.html locally.
+ *
+ * The zip uses relative paths so it works unpacked anywhere.
+ *
+ * Run: node .ai/templates/generate-slidev-zip.mjs
+ *
+ * Requires jszip (devDependency). The Slidev output must already be built:
+ *   cd decks/template && pnpm build
+ */
+
+import JSZip from 'jszip'
+import { resolve, dirname, relative } from 'node:path'
+import { fileURLToPath } from 'node:url'
+import { readFileSync, writeFileSync, readdirSync, statSync } from 'node:fs'
+
+const __dir = dirname(fileURLToPath(import.meta.url))
+const ROOT = resolve(__dir, '../..')
+const SRC = resolve(ROOT, 'public/decks/template')
+const OUT = resolve(ROOT, 'public/downloads/offon-slidev-template.zip')
+
+function addDir(zip, fsDir) {
+  for (const entry of readdirSync(fsDir)) {
+    const fsPath = resolve(fsDir, entry)
+    const zipPath = relative(SRC, fsPath)
+    if (statSync(fsPath).isDirectory()) {
+      addDir(zip, fsPath)
+    } else {
+      zip.file(zipPath, readFileSync(fsPath))
+    }
+  }
+}
+
+const zip = new JSZip()
+const dir = zip.folder('offon-slidev-template')
+addDir(dir, SRC)
+
+const output = await zip.generateAsync({
+  type: 'nodebuffer',
+  compression: 'DEFLATE',
+  compressionOptions: { level: 6 },
+})
+writeFileSync(OUT, output)
+console.log('Done → public/downloads/offon-slidev-template.zip')