Add Azure AI Content Understanding to azure-ai README

[Chien Yuan Chang (chienyuanchang)]

Summary

Updates the langchain-azure-ai README to document Microsoft Foundry Tools and add missing changelog entries for Content Understanding.

Changes

1. Feature list: Renamed "Azure AI Services tools" → "Microsoft Foundry Tools" with parenthetical noting Content Understanding, Document Intelligence, and more (also fixed the source link to use /tree/main/ for correct GitHub rendering)

2. New section — Microsoft Foundry Tools: Added a quick-reference section mentioning AzureAIServicesToolkit and AzureAIContentUnderstandingLoader, with a link to the demo notebook

3. Changelog (1.2.2): Added two [NEW] entries that were missing:

   • AzureAIContentUnderstandingLoader document loader (#423)
   • AzureAIContentUnderstandingTool agent tool, also available via AzureAIServicesToolkit (#446)

Why

Content Understanding components shipped in 1.2.2 but were not mentioned in the README feature list, had no Quick Start section, and had no changelog entries. This makes CU discoverable on PyPI. Detailed usage docs live in the demo notebook and Microsoft Learn.

Related PRs

• #423 — AzureAIContentUnderstandingLoader (merged)
• #446 — AzureAIContentUnderstandingTool (merged)

[Yung-Shin Lin (yungshinlintw)]

One change recommended

LGTB