Migrate WordPress site to Hugo

Replaces the WordPress 7.0.2 / HitMag site with a static Hugo build,
deployed by Gitea Actions over rsync/SSH.

Content: 26 files (9 pages + 17 posts) as Markdown page bundles, plus
127 of 165 media attachments. The remaining 38 are media-library
leftovers that appear nowhere on the live site; they are listed in
MIGRATION.md.

The WXR export contains neither media binaries nor widgets, so both were
recovered from the live host before it is retired:
  - tools/fetch_media.py downloads all uploads, capping them at 2000px
  - tools/build_data.py scrapes the "Unsere Mitglieder" and
    "In Erinnerung" widgets into data/*.yaml

TablePress' six Termine tables became data/termine.yaml, rendered with
the newest year expanded and earlier years collapsed. Old permalinks are
not preserved (clean slugs, no redirects, as agreed).

Custom layouts, no third-party theme. Plain CSS, since the pinned Hugo
0.164.0 is the non-extended build and cannot compile Sass.

Verified: clean build with zero warnings, 718 internal links checked and
none broken, no surviving wp-content URLs.

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

content/aktuelles/vorankuendigung-mcg-wochenende-2024/index.md

@@ -0,0 +1,15 @@
+---
+title: "Vorankündigung MCG Wochenende 2024"
+date: 2023-03-11T10:03:48Z
+featured: "whatsapp-image-2022-05-26-at-17-47-34.jpeg"
+---
+
+![](whatsapp-image-2022-05-26-at-17-47-34.jpeg)
+
+*Save the Date!*
+
+Das MCG Wochenende im Haus Marienmünster in Hövelhof wird nächstes Jahr an folgendem Datum stattfinden:
+
+**09.-12. Mai 2024** Wochenende Himmelfahrt
+
+Weitere Infos und Anmeldung folgen im laufe des Jahres