chore: 上流タスクとPRの構造化テンプレートを導入#8

LevelCapTech merged 5 commits intomainLevelCapTech/use-copilot-agent-template:mainfrom

feature/3-sync-agile-pmbok-assistLevelCapTech/use-copilot-agent-template:feature/3-sync-agile-pmbok-assistCopy head branch name to clipboard