FR-5: Client Rendering

• The client receives messages with an optional description field
• If description is present and non-empty, the message is rendered as a special “image description” bubble
• The bubble includes:
  • A small camera/image icon (Unicode 📷 or a custom sprite) at the start of the text
  • The description text, word-wrapped
  • A timestamp
  • A subtle visual distinction: lighter or desaturated background tint (e.g., (0, 150, 255) for outgoing, (210, 210, 210) for incoming)
• The bubble height accounts for the icon + text + timestamp
• If description is "__ERROR__" or missing, show a failure placeholder: “[Image — could not describe]”