Remove reading-time dependency

Field was unused in UI; removed from types, lib, and package.json.

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

Author: 09473ZH

package.json

@@ -25,7 +25,6 @@
     "next-themes": "^0.4.4",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
-    "reading-time": "^1.5.0",
     "rehype-autolink-headings": "^7.1.0",
     "rehype-pretty-code": "^0.14.0",
     "rehype-slug": "^6.0.0",

pnpm-lock.yaml

@@ -1,7 +1,6 @@
 import fs from 'fs'
 import path from 'path'
 import matter from 'gray-matter'
-import readingTime from 'reading-time'
 import GithubSlugger from 'github-slugger'
 import type { Post, PostMeta, PostFrontmatter, TOCItem } from '@/types'
 
@@ -51,7 +50,6 @@ export function getPostMeta(type: 'article' | 'weekly', slug: string): PostMeta
     slug,
     type,
     frontmatter,
-    readingTime: readingTime(content).text,
   }
 }
 
@@ -113,6 +111,5 @@ export function getPost(type: 'article' | 'weekly', slug: string): Post | null {
     type,
     frontmatter,
     rawContent: content,
-    readingTime: readingTime(content).text,
   }
 }

src/lib/posts.ts

@@ -15,14 +15,12 @@ export interface Post {
   type: 'article' | 'weekly'
   frontmatter: PostFrontmatter
   rawContent: string
-  readingTime: string
 }
 
 export interface PostMeta {
   slug: string
   type: 'article' | 'weekly'
   frontmatter: PostFrontmatter
-  readingTime: string
 }
 
 export interface BookFrontmatter {