Sept 14 (Reuters) - Temporal said on Monday it has raised $550 million in a late-stage funding round, more than doubling ​its valuation to $12.55 billion in seven months, as investors ‌seek software startups seen as benefiting from the AI boom.Temporal makes open-source software that helps applications, including AI agents, recover from failure, reducing the need ​for engineers to write custom recovery code. Sign up here.AI companies accounted for ​86% of U.S. venture deal value in the ⁠first h...