Automates pre-development workflow for large-scale complex tasks. Use when the user mentions "rewrite", "migrate", "overhaul", "refactor entire project", "transform", "rebuild in [language]", "spec-driven", or describes any large-scale project transformation that requires planning before coding. Also triggers on Chinese keywords: "ๆน้ ", "้ๅ", "่ฟ็งป", "้ๆ", "ๅคง่งๆจก", "่ง่้ฉฑๅจ". Performs full project analysis, task decomposition, documentation generation, progress tracking setup, and task-specific sub-SKILL creation before any development begins.