Add Memory Module for AURA

[NeoRyumasil]

Summary

Add Memory module for chat and call session.

Changes

• Add database model for Message, Conversation, and Memory table in ai-service and voice-agent
• Change memory service in ai-service such as:
  - create conversation for a session and save it to database
  - get conversation from database
  - save interaction messages to database
• Ai service now load the history first before generate response
• Add memory service in voice-agent (same as in ai service but add function that get and save extracted LLM conversation to memory table))
• Add memory extraction system prompt in agent.py
• Add build_system_prompt function that combine base prompt with long term memory in agent.py
• Extract and save memories in agent.py
• Add some requirements for memory in requirements.txt
• Add pixi.js dependencies for dashboard in package.json

Testing

• Run the program

• Test with chat :

  • Give some information like telling a name in a chat session
  • Ask the information that has been given in a new chat session

• Test with call:

  • Give some information like telling a name in a call session
  • Ask the information that has been given in a new call session
  • AI can remember the chat session so, you can also ask the information from chat session

• Notes:

  • In a chat session took about 30 seconds - 1 minutes for ai to reply for first message in the chat session
  • In a call session took about 30 seconds - 1 minutes for ai to "warmup" for every call session
  • In some test took about 10 seconds for ai to reply in call session
  • After Call Session ended need about 3 minutes - 5 minutes to do the call session again (For this minutes of range call session not generated i think)

Related Issues

Closes #18