Add new forecasting bots

[CodexVeritas]

Please add new bots for each of the below:

• Sonnet 4.6
• Gemini 3.1 Pro (also a high model if separate config)
• Qwen 3.5
• GPT 5.4
• GPT 5.4 High
• MiniMax M2.7
• GPT 5.4 mini
• GPT 5.4 nano
  If a high reasoning version is not specifically requested, use whatever the defaults are

Script for new metac bots and their password (slack)

In general this involves

• Create new config
• Dry run the script (definitely do this initially at least)
• Run the script on prod
• Add environment variables to forecasting-tools
• Add config for bot in the run-aib-tournament.yaml and run_bots.py

Probably use an agent for a lot of this. OpenRouter includes release dates you can check against and use to compare estimate cost.