Add truncate markers to all blog posts (13 posts missing)

[dfberry]

Problem

13 blog posts are missing <!-- truncate --> markers. Without them, the blog list page renders the full post body instead of a preview — hurting UX and page load time.

Build warning:

[WARNING] Docusaurus found blog posts without truncation markers

Affected files (all in website/blog/)

• 2023-02-04-blog.md
• 2023-02-09-azure-cloud-shell-faq.md
• 2023-06-04-openai-cli-with-typescript.md
• 2023-10-27-cloud-native-001.md
• 2023-11-03-cloud-native-002-developer-environment-setup.md
• 2023-11-10-cloud-native-003-api.md
• 2023-11-21-cloud-native-004-devops.md
• 2023-12-10-cloud-native-005-deploy-from-github-to-azure.md
• 2023-12-28-cloud-native-006-client-todo.md
• 2024-01-21-cloud-native-008-api-database.md
• 2024-04-06-remote-code.md
• 2024-04-07-mono-repo-functions.md
• 2025-12-30-github-account-clean.md

Fix

Add <!-- truncate --> after the first meaningful paragraph of each post — after enough context for the reader to decide if they want to keep reading.

Notes

Book should place the marker at a natural break point, not mechanically after line 5.