Ask the player to repeat themselves on error/blank response

[soulofmischief]

If the chat enters an error state due to speech recognition failure, or if the resulting speech is blank, ask the player to repeat themselves.

For now, just use a map of 20+ pre-defined responses + corresponding emotes, such as:

• Huh? (confused)
• What? (confused)
• Eh? (confused)
• ... (silent)
• Can you repeat that? (neutral)

etc.

These should be hooked into the emote manager. We can test integration here first and then upstream it to the AI brain.