add liveline page: recreation of benji.org/liveline editorial design

Recreates the benji.org/liveline page in the website folder using React,
Tailwind, and the same editorial design system. Charts are replaced with
static SVG placeholders.

Typography:
- Inter variable font from rsms.me (same source as next/font)
- font-weight 475 body, 560 headings, font-optical-sizing: auto
- 14px body, 20px line-height, -0.09px letter-spacing
- Near-black text rgb(17,17,17), 40% opacity secondary
- Display P3 accent colors with @supports fallback

Layout:
- 550px narrow content column, fixed TOC sidebar
- Stagger-in entrance animation with cascading delays
- Fixed header fade gradient (multi-stop white-to-transparent)
- Scroll-spy TOC highlighting via IntersectionObserver

Code blocks:
- Prism.js syntax highlighting with GitHub-light color palette
- Line numbers column with 20px right padding
- 12px / 18px font size

Props tables, dividers, captions, code blocks, bullet lists all
styled to match the original computed values.

pnpm-lock.yaml

@@ -427,6 +427,9 @@ importers:
       '@tailwindcss/typography':
         specifier: ^0.5.19
         version: 0.5.19(tailwindcss@4.1.18)
+      '@types/prismjs':
+        specifier: ^1.26.6
+        version: 1.26.6
       '@vercel/react-router':
         specifier: ^1.2.4
         version: 1.2.4(@react-router/dev@7.11.0(@types/node@25.0.3)(jiti@2.6.1)(lightningcss@1.30.2)(react-router@7.11.0(react-dom@19.2.3(react@19.2.3))(react@19.2.3))(tsx@4.20.6)(typescript@5.9.3)(vite@7.3.0(@types/node@25.0.3)(jiti@2.6.1)(lightningcss@1.30.2)(tsx@4.20.6)(yaml@2.6.0))(yaml@2.6.0))(@react-router/node@7.11.0(react-router@7.11.0(react-dom@19.2.3(react@19.2.3))(react@19.2.3))(typescript@5.9.3))(isbot@5.1.32)(react-dom@19.2.3(react@19.2.3))(react@19.2.3)
@@ -442,6 +445,9 @@ importers:
       lucide-react:
         specifier: ^0.562.0
         version: 0.562.0(react@19.2.3)
+      prismjs:
+        specifier: ^1.30.0
+        version: 1.30.0
       react:
         specifier: ^19.2.3
         version: 19.2.3
@@ -499,7 +505,7 @@ importers:
         version: 6.0.3(typescript@5.9.3)(vite@7.3.0(@types/node@25.0.3)(jiti@2.6.1)(lightningcss@1.30.2)(tsx@4.20.6)(yaml@2.6.0))
       vitest:
         specifier: ^4.0.16
-        version: 4.0.16(@opentelemetry/api@1.9.0)(@types/node@25.0.3)(@vitest/ui@4.0.8(vitest@4.0.8))(jiti@2.6.1)(jsdom@27.2.0(bufferutil@4.0.9))(lightningcss@1.30.2)(tsx@4.20.6)(yaml@2.6.0)
+        version: 4.0.16(@opentelemetry/api@1.9.0)(@types/node@25.0.3)(@vitest/ui@4.0.8)(jiti@2.6.1)(jsdom@27.2.0(bufferutil@4.0.9))(lightningcss@1.30.2)(tsx@4.20.6)(yaml@2.6.0)
 
 packages:
 
@@ -2773,6 +2779,9 @@ packages:
   '@types/pg@8.6.1':
     resolution: {integrity: sha512-1Kc4oAGzAl7uqUStZCDvaLFqZrW9qWSjXOmBfdgyBP5La7Us6Mg4GBvRlSoaZMhQF/zSj1C8CtKMBkoiT8eL8w==}
 
+  '@types/prismjs@1.26.6':
+    resolution: {integrity: sha512-vqlvI7qlMvcCBbVe0AKAb4f97//Hy0EBTaiW8AalRnG/xAN5zOiWWyrNqNXeq8+KAuvRewjCVY1+IPxk4RdNYw==}
+
   '@types/react-dom@19.2.3':
     resolution: {integrity: sha512-jp2L/eY6fn+KgVVQAOqYItbF0VY/YApe5Mz2F0aykSO8gx31bYCZyvSeYxCHKvzHG5eZjc+zyaS5BrBWya2+kQ==}
     peerDependencies:
@@ -5467,6 +5476,10 @@ packages:
     engines: {node: '>=14'}
     hasBin: true
 
+  prismjs@1.30.0:
+    resolution: {integrity: sha512-DEvV2ZF2r2/63V+tK8hQvrR2ZGn10srHbXviTlcv7Kpzw8jWiNTqbVgjO3IY8RxrrOUF8VPMQQFysYYYv0YZxw==}
+    engines: {node: '>=6'}
+
   process-warning@5.0.0:
     resolution: {integrity: sha512-a39t9ApHNx2L4+HBnQKqxxHNs1r7KF+Intd8Q/g1bUh6q0WIp9voPXJ/x0j+ZL45KF1pJd9+q2jLIRMfvEshkA==}
 
@@ -9257,6 +9270,8 @@ snapshots:
       pg-protocol: 1.10.3
       pg-types: 2.2.0
 
+  '@types/prismjs@1.26.6': {}
+
   '@types/react-dom@19.2.3(@types/react@19.2.7)':
     dependencies:
       '@types/react': 19.2.7
@@ -12368,6 +12383,8 @@ snapshots:
 
   prettier@3.7.4: {}
 
+  prismjs@1.30.0: {}
+
   process-warning@5.0.0: {}
 
   progress@2.0.3: {}
@@ -13516,7 +13533,7 @@ snapshots:
       tsx: 4.20.6
       yaml: 2.6.0
 
-  vitest@4.0.16(@opentelemetry/api@1.9.0)(@types/node@25.0.3)(@vitest/ui@4.0.8(vitest@4.0.8))(jiti@2.6.1)(jsdom@27.2.0(bufferutil@4.0.9))(lightningcss@1.30.2)(tsx@4.20.6)(yaml@2.6.0):
+  vitest@4.0.16(@opentelemetry/api@1.9.0)(@types/node@25.0.3)(@vitest/ui@4.0.8)(jiti@2.6.1)(jsdom@27.2.0(bufferutil@4.0.9))(lightningcss@1.30.2)(tsx@4.20.6)(yaml@2.6.0):
     dependencies:
       '@vitest/expect': 4.0.16
       '@vitest/mocker': 4.0.16(vite@7.3.0(@types/node@25.0.3)(jiti@2.6.1)(lightningcss@1.30.2)(tsx@4.20.6)(yaml@2.6.0))