Simplify footnote plugin to only render inline citations

• Remove footnote definition collection
• Remove footnote references section
• Simplify HTML output with placeholder links
• Keep only inline citation rendering
• Remove unused imports and types

lightrag_webui/src/utils/remarkFootnotes.ts

@@ -1,37 +1,11 @@
 import { visit } from 'unist-util-visit'
 import type { Plugin } from 'unified'
-import type { Root, Text, Paragraph, Html } from 'mdast'
+import type { Root, Text } from 'mdast'
 
-// Simple footnote plugin for remark
+// Simple footnote plugin for remark - only renders inline citations
 export const remarkFootnotes: Plugin<[], Root> = () => {
   return (tree: Root) => {
-    const footnoteDefinitions = new Map<string, string>()
-
-    // First pass: collect footnote definitions and remove them
-    const nodesToRemove: Array<{ parent: any; index: number }> = []
-
-    visit(tree, 'paragraph', (node: Paragraph, index, parent) => {
-      if (!parent || typeof index !== 'number') return
-
-      // Check if this paragraph contains only a footnote definition
-      if (node.children.length === 1 && node.children[0].type === 'text') {
-        const text = (node.children[0] as Text).value
-        const match = text.match(/^\[\^([^\]]+)\]:\s*(.+)$/)
-        if (match) {
-          const [, id, content] = match
-          footnoteDefinitions.set(id, content.trim())
-          nodesToRemove.push({ parent, index })
-          return
-        }
-      }
-    })
-
-    // Remove footnote definition paragraphs
-    nodesToRemove.reverse().forEach(({ parent, index }) => {
-      parent.children.splice(index, 1)
-    })
-
-    // Second pass: find footnote references and replace them
+    // Find footnote references and replace them with inline citations
     visit(tree, 'text', (node: Text, index, parent) => {
       if (!parent || typeof index !== 'number') return
 
@@ -53,10 +27,10 @@ export const remarkFootnotes: Plugin<[], Root> = () => {
           })
         }
 
-        // Add footnote reference as HTML
+        // Add footnote reference as HTML with placeholder link
         replacements.push({
           type: 'html',
-          value: `<sup><a href="#fn-${id}" id="fnref-${id}" class="footnote-ref">${id}</a></sup>`
+          value: `<sup><a href="#footnote" class="footnote-ref">${id}</a></sup>`
         })
 
         lastIndex = startIndex + fullMatch.length
@@ -75,42 +49,5 @@ export const remarkFootnotes: Plugin<[], Root> = () => {
         parent.children.splice(index, 1, ...replacements)
       }
     })
-
-    // Third pass: add footnotes section at the end if we have definitions
-    if (footnoteDefinitions.size > 0) {
-      const footnotesList: any[] = []
-
-      footnoteDefinitions.forEach((content, id) => {
-        footnotesList.push({
-          type: 'listItem',
-          children: [{
-            type: 'paragraph',
-            children: [{
-              type: 'html',
-              value: `<span id="fn-${id}">${content} <a href="#fnref-${id}" class="footnote-backref">↩</a></span>`
-            }]
-          }]
-        })
-      })
-
-      // Add footnotes section
-      tree.children.push({
-        type: 'html',
-        value: '<div class="footnotes">'
-      } as Html)
-
-      tree.children.push({
-        type: 'list',
-        ordered: true,
-        start: 1,
-        spread: false,
-        children: footnotesList
-      })
-
-      tree.children.push({
-        type: 'html',
-        value: '</div>'
-      } as Html)
-    }
   }
 }