What is the primary purpose and content of Chapter 1 of the Shri Sai Satcharitra?

Based on the text, Chapter 1 of the Shri Sai Satcharitra is titled Mangalacharan, which means auspicious invocations. The chapter explains that the purpose of these invocations is to ensure the obstacle-free completion of the task of writing the book and to obtain the grace of the deities. As detailed in the first chapter, the author offers salutations to several divine figures, including Lord Ganesha, Goddess Saraswati, the Guru, family deities, and Sadguru Sainath himself. This tradition of bowing to deities is adopted for attaining auspiciousness and serves to remove all hindrances, allowing the author to fulfill the desired goal of narrating Sai's life.