> $ undo my mess --dry-run▋

Each tool here answers a single recurring question and gets out of the way: what is the exact git command for this mess, will this GGUF fit in this card before the 40 GB download. Every one is a static page you could save locally — the companion posts explain the arithmetic and the judgment behind each answer.

• git undo 生成器：一句话说出你该敲哪条命令回答三个问题——推没推、改不改动、分支是不是只有你用——git undo 生成器直接给你那条准确的 reset、revert 或 reflog 命令。
• GGUF 显存计算器：下载前先算清楚输入参数量、量化和上下文长度，输出权重、KV 缓存和逐档显卡判定——GGUF 显存计算器在下载开始之前给出答案。