Hero Sections Integrated into the Block Model
Mastheads now sit inside the same block model as all other page sections, ending their status as a special-case template corner.
Mastheads are now built and configured through the same controls as every other page section. Previously, hero-style content had a separate rendering path that editors and theme developers had to track independently. That separation is gone: a masthead is now just another block.
What this means for editors
Building a masthead uses the same interface as any other section. There is no separate screen or special-case workflow to learn.
What this means for theme developers
The separate masthead rendering path has been removed. Follow-up fixes also tighten migrations, source values, and styling references so existing pages continue rendering correctly while the new model becomes the default.