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>

hugo.toml

@@ -0,0 +1,64 @@
+baseURL = 'https://mcg.luxick.de/'
+title = 'Motorradclub Giebelwald e.V.'
+locale = 'de-DE'
+defaultContentLanguage = 'de'
+enableRobotsTXT = true
+enableGitInfo = false
+
+# Nothing here is dated in the future on purpose; keep drafts out of production.
+buildDrafts = false
+buildFuture = false
+
+[params]
+  description = 'Gegründet 1976'
+  tagline = 'Gegründet 1976'
+  email = 'vorstand@motorradclub-giebelwald.de'
+  logo = 'img/logo.png'
+  banner = 'img/banner.jpg'
+  dateFormat = '2. January 2006'
+
+[markup.goldmark.renderer]
+  # The imported WordPress content contains hand-written HTML (tables, links with
+  # target attributes) that must survive rendering.
+  unsafe = true
+
+[markup.tableOfContents]
+  startLevel = 2
+  endLevel = 3
+
+[taxonomies]
+  tag = 'tags'
+
+[menus]
+  [[menus.main]]
+    name = 'Aktuelles'
+    pageRef = '/aktuelles'
+    weight = 10
+  [[menus.main]]
+    name = 'Termine'
+    pageRef = '/termine'
+    weight = 20
+  [[menus.main]]
+    name = 'Downloads'
+    pageRef = '/downloads'
+    weight = 30
+  [[menus.main]]
+    name = 'Archiv'
+    pageRef = '/archiv'
+    weight = 40
+  [[menus.main]]
+    name = 'Impressum'
+    pageRef = '/impressum'
+    weight = 50
+
+[outputs]
+  home = ['html', 'rss', 'sitemap']
+  section = ['html', 'rss']
+
+[services.rss]
+  limit = 20
+
+[privacy]
+  # No third-party embeds on this site; keep it that way.
+  [privacy.youtube]
+    disable = true