docs: overzicht van de vijf reeksen in de README, en scripts niet meetellen voor het taallabel

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

.gitattributes

@@ -0,0 +1,5 @@
+# De handleidingen zijn de inhoud; de scripts maken er PDF, dia's en video van.
+# Daarom tellen ze niet mee voor het taallabel van deze repository.
+_gereedschap/** linguist-vendored
+*/build.py linguist-vendored
+*.py linguist-vendored

README.md

@@ -9,6 +9,24 @@ The screenshots show the English Dify interface and the English build of each ap
 Licence: CC BY-SA 4.0 (documents, slides, images) and MIT (scripts), see LICENSE.md.
 Owner and contact: Guido van Dijk, guido@l-e-x.nl.
 
+
+## The five series side by side
+
+The same six agents, built in four environments, so you can practise in the platform your school
+already has. The Dutch series are in Dutch; this one is the English edition.
+
+| Series | Where you build | Who can build | Pick this if |
+| --- | --- | --- | --- |
+| [dify-guides](https://git.lexconsultancy.nl/guido/dify-guides) | Dify, English | Anyone with an account | You work in English (this series) |
+| [dify-handleidingen](https://git.lexconsultancy.nl/guido/dify-handleidingen) | Dify, Dutch | Anyone with an account | You want to see the mechanics: knowledge base, custom tools, gatekeeper, a human in the loop |
+| [copilot-handleidingen](https://git.lexconsultancy.nl/guido/copilot-handleidingen) | Microsoft 365 Copilot Chat, Dutch | Any colleague with a school account | Your school runs on Microsoft 365 |
+| [chatgpt-handleidingen](https://git.lexconsultancy.nl/guido/chatgpt-handleidingen) | ChatGPT, custom GPTs, Dutch | Only with a paid plan or workspace | You already have a ChatGPT workspace |
+| [gemini-handleidingen](https://git.lexconsultancy.nl/guido/gemini-handleidingen) | Google Gemini, Gems, Dutch | Any colleague with a school account | Your school runs on Google Workspace for Education |
+
+All series: CC BY-SA 4.0 for documents and images, MIT for the scripts. The Python scripts in
+`_gereedschap` turn the texts into PDFs and build the slides and the explainer videos; you do not
+need them to follow a guide or to build an agent.
+
 ## Contents
 
 | Folder | Title | For whom | Size |