v0.0.86

• Updated the persona prompt template to indicate that file reading is not
  required.
• Added an optional flag to the /links command.
• Made the edit subcommand of /revise optional.
• Introduced a backup subcommand for persona management, including a new
  backup_persona method and updated command regex/completion.
• Fixed the rescue exception class name in the use_model block of the chat
  logic.
• Ensured float division for duration calculations in FollowChat for accurate
  timing.
• Switched to Pathname#expand_path for tilde expansion in directory checks.
• Removed the deprecated -d flag from the /input command.
• Removed tag support from parse_content; the method now returns a single
  string.
• Updated the file_context tool description to accurately reflect its
  capabilities.
• Added an interactive loop for enabling and disabling tools, with an [EXIT]
  option.