Show HN: Stackit – Pruning LLM context windows using a branching chat UI (github.com)

Stackit, a new Chrome Extension, has been introduced to transform Google Gemini into a non-linear, branching research tool. This innovative tool addresses the limitations of standard AI chat interfaces that operate as linear buffers, which often lead to loss of context during lengthy conversations. With Stackit, users can "fork" discussions at any point, creating nested child cards that capture specific moments in the dialogue, isolating logic to prevent context pollution, and visualizing the depth of branching research through a recursive UI. This development is significant for the AI/ML community as it enhances the usability of conversational AI for research and complex problem-solving. Key technical features include context slicing, which ensures the AI only perceives relevant information from the chosen branch, privacy-focused design with local API key storage, and optimized performance using advanced CSS techniques. By treating conversation history like a memory stack, Stackit provides a more structured way to engage with AI, potentially revolutionizing how users interact with sophisticated models and enabling richer, more organized exploration of ideas.