A wikilink names the note the author meant to write, so that name is real information — seeding it as an H1 saves retyping what you just typed and gives useDocumentTitle a heading to read. `createFile` gains optional initial content, threaded through the synced provider so the remote doc carries it rather than being created empty and filled by a later sync. The `.md` extension is applied explicitly rather than relying on createFile's auto-append, which only fires when the name has no dot at all and would otherwise land `[[Release v1.2]]` as an extensionless file. Scoped to wikilinks on purpose: "New File" names a note `Untitled`, and an `# Untitled` heading would just be noise to delete. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>