Remove editorial_workflow - not supported by Gitea backend

Error: 'The Gitea backend does not support editorial workflow'

Editorial workflow (draft/review/publish) is a GitHub-only feature.
Gitea backend requires direct commits to master branch.

Keeping all other task improvements:
- Individual task files in docs/tasks-index/
- Priority-based sorting
- Improved field labels and hints

admin/config.yml

@@ -14,9 +14,6 @@ site_url: https://firefrostgaming.com
 display_url: https://firefrostgaming.com
 logo_url: /assets/images/2026/02/Light-logo.png
 
-# Editorial workflow - draft/review/publish flow
-publish_mode: editorial_workflow
-
 # Disable preview pane globally (dark mode compatibility - font/background color issue)
 editor:
   preview: false