gffranco
4a717bcb31
The heading lexer required a space after the opening `=`s, so `==Heading==` fell through to a literal `<p>==Heading==</p>` instead of an `<h2>`. vimwiki accepts the spaceless form, so a migrated page whose top heading was `==TODO==` (or `====Progress====`) rendered with no heading at all. Drop the space-after-marker requirement; the existing title trim already handles one optional space per side, so both `== H ==` and `==H==` work. Marker-only (`======`) and unbalanced (`==a==b`, `==> x`) lines still stay paragraphs (title-present + matching trailing-`=` checks). Regression tests added at the lexer and renderer levels. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>