fix(docs): disable git info for archived version builds

git archive extracts files without a .git directory, causing Hugo to
fail when enableGitInfo = true. Override via HUGO_ENABLEGITINFO=false
for the versioned build loop.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: aerben

.github/workflows/hugo.yaml

@@ -121,8 +121,10 @@ jobs:
             # Append version dropdown entries
             echo "${VERSIONS_TOML}" >> "${HUGO_TOML}"
 
-            # Build Hugo for this version
-            hugo \
+            # Build Hugo for this version.
+            # HUGO_ENABLEGITINFO=false because git archive extracts files
+            # without a .git directory, so git log would fail otherwise.
+            HUGO_ENABLEGITINFO=false hugo \
               --source "${WORKDIR}/docs" \
               --gc \
               --minify \