2.12.0 - Peersky theme compat, Local AI onboarding improvements

• Pages should now use the browser://theme/style.css URL for adding styles across both Agregore and Peersky
• The default LLM model is now qwen2.5-coder:3B which can run on lower end hardware
• The AI flow will try to detect ollama and guide you to install it if it's missing.
• Config changes are now immediate (upon save) and you don't need to reload the browser for changes to take effect
• The welcome page got cleaned up a bit to be more focused