Summary

This replaces the Painless section that was proposed for the Troubleshooting section of the docs, to instead be a Debugging Painless scripts section in the Explore & Analyze Painless docs.

To my mind, this has two advantages:

• These Painless pages aren't true "troubleshooting" docs, and I think would not fit well into the Symptoms / Diagnosis / Resolution format that is now standard for that section. Debugging, here, is something that people need to be mindful of as they're composing their scripts, rather than a spontaneous error that needs diagnosis and recovery.
• Embedding this content into the existing Explore and Analyze section means that we have our Painless info in two locations (narrative + reference), rather than split across three separate parts of the docs. Much better as a user experience, IMHO.

Preview: Please see Debug Painless scripts in Elasticsearch and all sub-topics.

@yetanothertw I made changes as we talked about, except that I didn't move the "root cause" sections. As I read through I realized that these are specific to each example, so they wouldn't make sense where the description is. But, I have moved the "Notes" sections to be part of the descriptions at the top of each page (above the fold).

Generative AI disclosure

1. Did you use a generative AI (GenAI) tool to assist in creating this contribution?

• Yes
• No