feat: architectural grid editor fullPage + slash commands + doc info panel + AI title

memento-note/lib/note-preview.ts

@@ -1,3 +1,8 @@
+import type { Note } from '@/lib/types'
+
+const MD_IMG = /!\[[^\]]*\]\(([^)\s]+)\)/g
+const HTML_IMG = /<img[^>]+src=["']([^"']+)["'][^>]*>/gi
+
 /**
  * Plain-text preview for list view (light markdown stripping).
  */
@@ -31,3 +36,27 @@ export function getNoteDisplayTitle(note: { title: string | null; content: strin
   const preview = stripMarkdownPreview(note.content || '', 100)
   return preview || untitled
 }
+
+export function getNoteFeedImage(note: Note): string | null {
+  const first = note.images?.[0]?.trim()
+  if (first) return first
+
+  const content = note.content || ''
+  MD_IMG.lastIndex = 0
+  const md = MD_IMG.exec(content)
+  if (md?.[1]) return md[1]
+
+  HTML_IMG.lastIndex = 0
+  const html = HTML_IMG.exec(content)
+  if (html?.[1]) return html[1]
+
+  return null
+}
+
+/** Plain excerpt for collection cards (HTML + markdown noise stripped). */
+export function getNotePlainExcerpt(note: Note, maxLen = 240): string {
+  let raw = note.content || ''
+  raw = raw.replace(/!\[[^\]]*\]\([^)]+\)/g, ' ')
+  raw = raw.replace(/<[^>]+>/g, ' ')
+  return stripMarkdownPreview(raw, maxLen)
+}