(might be) by Birkar
This work was initiated in 2025 and developed over an extended period with support from a grant of Tsinghua University and a grant of the National Program of Overseas High Level Talent. The main ideas, definitions, questions, and overall direction of this work were developed by the author. AI tools (ChatGPT and DeepSeek) were used during the preparation of the paper as technical assistants to help with checking calculations and arguments, developing details of proofs and examples using standard techniques, locating relevant references, and improving the exposition. All mathematical statements, proofs, and conclusions were verified by the author.