Revert "Add client-side note encryption"

This reverts commit 5cf5a45682.

web/src/markdown/links.test.ts

@@ -1,22 +0,0 @@
-import { expect, it } from 'vitest'
-import { imageLinks, rewriteImageLinks } from './links'
-
-it('只列出图片与引用定义的地址，跳过普通链接和代码', () => {
-  const src = [
-    '![a](a.assets/1.png) [链接](a.assets/2.png) ![b](<a.assets/有 空格.png> "标题")',
-    '',
-    '`![c](a.assets/3.png)`',
-    '',
-    '```',
-    '![d](a.assets/4.png)',
-    '```',
-    '',
-    '![e][ref]',
-    '',
-    '[ref]: a.assets/5.png',
-  ].join('\n')
-  expect(imageLinks(src).map((l) => l.url)).toEqual(['a.assets/1.png', 'a.assets/有 空格.png', 'a.assets/5.png'])
-  expect(rewriteImageLinks(src, (u) => (u.endsWith('5.png') ? undefined : u.replace('a.assets', 'b.assets')))).toBe(
-    src.replace('a.assets/1.png', 'b.assets/1.png').replace('a.assets/有 空格', 'b.assets/有 空格'),
-  )
-})

web/src/markdown/links.ts

@@ -1,37 +0,0 @@
-import { markdownParser } from './html'
-
-/** 图片地址在源码中的位置；url 为书写形式（尖括号已去掉，未解码） */
-export interface ImageLink {
-  from: number
-  to: number
-  url: string
-}
-
-/** 列出图片 ![](url) 与链接引用定义 [x]: url 中的地址（引用定义可能被图片使用）；代码中的不算 */
-export function imageLinks(src: string): ImageLink[] {
-  const out: ImageLink[] = []
-  markdownParser.parse(src).iterate({
-    enter(ref) {
-      if (ref.name !== 'Image' && ref.name !== 'LinkReference') return
-      const url = ref.node.getChild('URL')
-      if (!url) return
-      let { from, to } = url
-      if (src[from] === '<' && src[to - 1] === '>') [from, to] = [from + 1, to - 1]
-      out.push({ from, to, url: src.slice(from, to) })
-    },
-  })
-  return out
-}
-
-/** 替换图片地址：map 返回 undefined 的保持不变 */
-export function rewriteImageLinks(src: string, map: (url: string) => string | undefined): string {
-  let out = ''
-  let at = 0
-  for (const l of imageLinks(src)) {
-    const next = map(l.url)
-    if (next === undefined) continue
-    out += src.slice(at, l.from) + next
-    at = l.to
-  }
-  return out + src.slice(at)
-}