Official example code cannot run directly, documentation is incomplete and poor quality

I followed the official getting-started tutorial and tried to run the provided sample code, but the example program failed to execute directly out of the box. There are missing dependency prompts, unclear configuration steps, insufficient parameter explanations, and missing prerequisite setup descriptions in the official documents, resulting in new users being unable to reproduce the sample case smoothly according to the documentation step by step.

eg dataagent:

When starting via JDBC, the documentation does not explain how to configure the data source, nor does it provide configuration methods to disable sandbox startup mode.