Redesign book interior: Illuminated Nocturne aesthetic

Replaces Georgia + per-story color theming with a unified premium
fairytale look: Cormorant Garamond (display/titles) + Lora (body),
warm cream text pages (#faf8f2 with paper noise texture), deep ink
typography (#1e1b18) throughout — no per-story text color variation.

- fonts/: committed WOFF2 files via @fontsource packages; auto-copied
  by scripts/setup-fonts.js (runs as postinstall)
- Typography: story number in small caps, hairline rule, ❧ ornament
- Layout: cream background replaces per-story bg, radial glow on title
- build.js: passes frontMatter (author, year) to templates
- Templates: author byline on title page, cleaner imprint page

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package.json

@@ -4,6 +4,8 @@
   "private": true,
   "type": "module",
   "scripts": {
+    "postinstall": "node scripts/setup-fonts.js",
+    "setup-fonts": "node scripts/setup-fonts.js",
     "build": "node scripts/build.js",
     "pdf": "node scripts/pdf.js",
     "cover": "node scripts/cover.js",
@@ -12,9 +14,13 @@
     "watch": "node --watch scripts/build.js"
   },
   "pnpm": {
-    "onlyBuiltDependencies": ["puppeteer"]
+    "onlyBuiltDependencies": [
+      "puppeteer"
+    ]
   },
   "dependencies": {
+    "@fontsource/cormorant-garamond": "^5.2.11",
+    "@fontsource/lora": "^5.2.8",
     "gray-matter": "^4.0.3",
     "marked": "^12.0.0",
     "nunjucks": "^3.2.4",