feat(workspace): make directory paths clickable and rename "Today's Note" to "Add Memory"

Add open_workspace_directory Tauri command to open workspace/memory dirs
in the system file manager. Rename dailyMemory.createToday across all locales.

src-tauri/src/lib.rs

@@ -1052,6 +1052,7 @@ pub fn run() {
             commands::write_daily_memory_file,
             commands::delete_daily_memory_file,
             commands::search_daily_memory_files,
+            commands::open_workspace_directory,
         ]);
 
     let app = builder