Merge branch 'mako_changes-20260806' into content-sizes

Brings in revision-level redirect detection and its regenerated
baselines. Conflicts were the expected adjacent insertions where both
branches extended the same seams (build_table and WikiqParser
signatures, the argparse block, the build_table call sites, and the
test file); resolved by keeping both branches' additions.

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

README.md

@@ -37,6 +37,16 @@ Each output row describes one revision. The output format follows the
 else produces tab-separated values. With no dump file argument, wikiq
 reads XML on stdin and writes to stdout.
 
+The `title` and `namespace` columns are page-level identity values as
+of the time of export: a moved page's entire history carries its final
+title, and namespace derives from that title. Redirect status, by
+contrast, is determined per revision from each revision's own text: the
+`revision_is_redirect` and `revision_redirect_target` columns record
+whether a revision's text begins with a redirect directive and where it
+points. `#REDIRECT` is recognized on every wiki; wikis that also use a
+localized keyword can add it with `--redirect-aliases` (for example,
+`--redirect-aliases OMDIRIGERING` for Swedish wikis).
+
 The most commonly useful options (`wikiq --help` describes them all):
 
 - `-n ID` limits output to a namespace, and can be given more than once.