diff --git a/AGENTS.md b/AGENTS.md
index fdac2ac..0811247 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -80,4 +80,5 @@ When the user requests a durable behavior change, record it here or in the relev
 
 ## Child DOX Index
 
-This project is not yet indexed. Before continuing you must scan the project, build the DOX tree and replace this message with the actual index. Go deep and scan files recursively to properly evaluate complexity and create nested DOX files where needed.
\ No newline at end of file
+- No child AGENTS.md files are needed for the current repository structure.
+- Root-owned files: `README.md`, `LICENSE`, `banner.jpg`, `video-thumbnail.jpg`, and root-level project documentation.
diff --git a/README.md b/README.md
index 963972a..7276f15 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,12 @@ The agent keeps a hierarchy of AGENTS.md files as the project changes:
 
 The result is simple: traverse the docs, understand the local rules, make precise edits, keep the docs current. Less guessing. Less drift. Less "why did it touch that file?"
 
+<p align="center">
+  <a href="https://youtu.be/NVkRkioBXQc">
+    <img src="./video-thumbnail.jpg" alt="Watch: One markdown file just fixed AI coding forever." width="640">
+  </a>
+</p>
+
 ## How to use
 
 1. Copy the contents of [AGENTS.md](./AGENTS.md) into your project's AGENTS.md file.
diff --git a/video-thumbnail.jpg b/video-thumbnail.jpg
new file mode 100644
index 0000000..91f839d
Binary files /dev/null and b/video-thumbnail.jpg differ