IPC API

Constant	Direction	Parameters	Returns	Description
READ_FILE	Renderer to Main	filePath: string	Promise<string>	Reads a validated markdown file.
OPEN_FILE_DIALOG	Renderer to Main	none	Promise<string | null>	Opens the native markdown picker.
OPEN_FOLDER_DIALOG	Renderer to Main	none	Promise<string | null>	Opens the native folder picker.
READ_FOLDER	Renderer to Main	folderPath: string	Promise<FileType>	Reads a bounded markdown folder tree.
SEARCH_FOLDER	Renderer to Main	folderPath, query	Promise<FolderSearchResult[]>	Searches markdown files in an opened folder.
WATCH_FILE	Renderer to Main	filePath: string	Promise<void>	Starts a validated markdown file watcher.
UNWATCH_FILE	Renderer to Main	filePath: string	Promise<void>	Stops a file watcher.
FILE_CHANGED	Main to Renderer	filePath: string	event	Notifies the renderer that a watched file changed.
GET_RECENT_FILES	Renderer to Main	none	Promise<RecentFile[]>	Returns existing recent files.
ADD_RECENT_FILES	Renderer to Main	filePath: string	Promise<void>	Adds a file to recents.
GET_SETTINGS	Renderer to Main	none	Promise<AppSettings>	Loads settings.
SAVE_SETTINGS	Renderer to Main	Partial<AppSettings>	Promise<AppSettings>	Validates and merges settings.
GET_APP_VERSION	Renderer to Main	none	Promise<string>	Returns app.getVersion().
EXPORT_HTML	Renderer to Main	html, css, outPath	Promise<ExportResult>	Writes HTML export.
EXPORT_PDF	Renderer to Main	html, css, outPath	Promise<ExportResult>	Writes PDF export.
EXPORT_DOCX	Renderer to Main	html, css, outPath	Promise<ExportResult>	Writes DOCX export.

Most handlers throw on untrusted senders, invalid paths, disallowed extensions, or paths that escape the opened folder root.

DOCX Export

DOCX export is currently treated as a bonus export format. Keep it covered by tests and IPC docs while it remains in the product.