Add some documentation to add a new edition

Author: th-rst-n

README.md

@@ -27,4 +27,23 @@ Once it's running, head over to http://localhost:8000 to preview the site.
 - `pelicanconf.py`: Main configuration file
 - `data/`: Structured data (e.g., organizing committee)
 - `content/`: The core site content
-- `theme/templates/`: The template files
+- `theme/templates/`: The template files
+
+## Adding a New Edition
+
+Each edition of the conference is organized in an (ideally) self-contained repository under the IEEE SaTML GitHub organization. The domain **satml.org** is linked to this organization, which allows to serve any of its repositories via GitHub Pages under https://satml.org/<repository-name>.
+
+The **current edition** is served directly under `https://satml.org`, which is tied to the special repository **ieee-satml.github.io**.
+
+To add a new edition:
+
+1. **Archive the current site**:
+   - Duplicate the content of the main repository `ieee-satml.github.io` into a new repository named after the year (e.g., `2026`).
+   - This repository should be deployed at `https://satml.org/2026`.
+   - In `pelicanconf.py`, update the `SITEURL` to reflect this new location.
+   - Fix any internal links that may broke due to the move.
+
+2. **Create the new main site** in `ieee-satml.github.io`:
+   - This repository will serve the new edition directly under `https://satml.org`.
+   - It should be completely independent of the previous one.
+   - Include links pointing to past editions (e.g., 2023, 2024, etc.).