Label the progress-page blog post as AI-written and tighten the AGENTS.md rule (#13)

Co-authored-by: Cursor Agent <cursoragent@cursor.com>

Author: schacon

AGENTS.md

@@ -49,7 +49,9 @@ Two hard requirements:
  write a post without loading it first.
 2. **Set `automated: true` in the frontmatter of every agent-written post.** That
  renders the "written by AI" disclosure banner; unlabeled machine writing is never
- published.
+ published. Before committing, re-read the post's frontmatter and confirm the flag
+ is there — every time, for new posts and for edits to existing agent-written
+ posts alike. If you find an agent-written post missing the flag, add it.
 
 ## Cursor Cloud specific instructions
 

site/src/content/blog/a-progress-page-for-the-third-edition.mdx

@@ -2,6 +2,7 @@
 title: 'A progress page for the third edition'
 description: 'Every task the third edition needs, tracked in one hand-edited file and rendered as a live progress page on this site.'
 date: 2026-08-02
+automated: true
 ---
 
 The third edition now has a **[progress page](../../blog/progress/)** — one place