v0.0.84

• Added OllamaChat::Utils::ValueFormatter providing a format_bytes helper
  for human‑readable byte sizes.
• Introduced the RetrieveDocumentSnippets tool, which searches the local
  document collection for snippets matching a query and returns them with
  associated tags.
• Refactored Dialog#confirm? to accept a yes: regex keyword, display
  coloured emoji feedback, and handle timeouts.
• Updated tool payloads to include a message key for browse, search_web,
  paste_from_clipboard, resolve_tag, and other tools.
• The browse tool now returns a message indicating whether a URL or file was
  successfully opened.
• File‑related tools (write_file, patch_file, paste_from_clipboard) now
  report byte sizes using format_bytes.
• Enabled retrieve_document_snippets by default in default_config.yml.
• Updated model_handling to use format_bytes for displaying model sizes.
• Adjusted message_output and related modules to use the new confirm?
  signature and emoji output.
• Updated tests to reflect new message outputs and tool behavior.