fix(ses): preserve h1 elements — do not strip first heading

Songs always carries a # Song title line so stripping makes sense there,
but SES body structure is freeform and may use h1 deliberately.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

pipelines/ses/publish.py

@@ -10,7 +10,7 @@ import frontmatter
 import mwclient
 
 sys.path.insert(0, str(Path(__file__).resolve().parent.parent.parent))
-from lib.wiki import AUTO_BANNER_PREFIX, connect_wiki, markdown_to_wikitext, strip_first_h1
+from lib.wiki import AUTO_BANNER_PREFIX, connect_wiki, markdown_to_wikitext
 
 
 def validate(fm: dict, path: Path) -> None:
@@ -58,7 +58,7 @@ def publish_one(abs_path: Path, source_dir: Path, post, site: mwclient.Site, sou
     title = get_page_title(fm)
     page_type = get_page_type(fm, abs_path, source_dir)
 
-    body_wikitext = markdown_to_wikitext(strip_first_h1(post.content))
+    body_wikitext = markdown_to_wikitext(post.content)
     source_url = f"{gitea_repo_url}/src/commit/{source_ref}/{rel}"
     page_content = build_wikitext(fm, body_wikitext, source_url, source_ref, page_type)