Sync docs with recent plugin changes; formatting and placeholder cleanup

- Document the new Panel Text Color control on Woo Custom Product Tabs
  (dotjuice-elementor-tools-pro 20260817.1)
- Document Dark Mode Toggle now persisting site-wide (pages without the
  toggle) and applying before first paint (dotjuice-elementor-tools
  c33084e)
- Add blank line before headings following image captions across pro
  widget docs, so they render correctly
- Regenerate placeholder screenshots for pro widget and pagespeed docs
- Remove stray H1 from the free plugin marketing overview (post title
  already serves as H1, matching the other marketing files)
- Bump local dev port to 3080, drop unused site/docs/.gitkeep

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SZsdkGdZYtCS6hZaX92NQ6

marketing/dotjuice-elementor-tools/overview.md

@@ -1,5 +1,3 @@
-# Dotjuice Elementor Tools
-
 Free, practical Elementor widgets built for real WordPress and WooCommerce sites — screenshot capture, dark mode, WooCommerce styling fixes, and small utilities that solve problems the native widgets don't.
 
 ## Why these widgets exist
@@ -26,4 +24,4 @@ Every widget in this plugin is designed to sit alongside your existing theme, El
 
 ## Free forever, with a Pro upgrade path
 
-Every widget listed here is free, permanently. [Dotjuice Elementor Tools Pro](../dotjuice-elementor-tools-pro/overview.md) adds advanced WooCommerce widgets (AJAX product filtering, a full cart widget, quick view, custom product tabs), ACF frontend forms, and watermark-free screenshots for stores and sites that need to go further.
+Every widget listed here is free, permanently. [Dotjuice Elementor Tools Pro](../dotjuice-elementor-tools-pro/overview.md) adds advanced WooCommerce widgets (AJAX product filtering, a full cart widget, quick view, custom product tabs), ACF frontend forms, and watermark-free screenshots for stores and sites that need to go further.