v0.1.40

Fix

• terminal-panel-close / terminal-panel-action: dark theme visibility fix
  • .terminal-panel-close color: hardcoded rgba(30,30,46,0.6) -> var(--text-color) based
  • .terminal-panel-action border/background/color: hardcoded light-only values -> var(--text-color) based
  • hover states also updated to respect current theme

Feature

• Batch EPUB export: combine multiple open files into a single EPUB
  • Supports MD, DOCX, PPTX, TXT file types
  • DOCX -> HTML via mammoth, PPTX -> text extraction via pptxParser
  • File selection modal with reorder (up/down), per-file type badges
  • Available when 2+ compatible files are open (BookPlus icon in editor toolbar)
  • multiFilesToEpubBase64() in mdToEpub.ts
  • Refactored existing markdownToEpubBase64() to reuse shared buildEpubZip()