Bootstrap Hugo site with PaperMod theme and custom homepage

Sets up the ReGround business site: PaperMod theme (v8.0) as a
submodule, pinned Hugo 0.124.1, and a custom homepage hero
overriding the theme's default blog-first layout with editable
front-matter copy.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

content/_index.md

@@ -0,0 +1,13 @@
+---
+title: "ReGround"
+hero_heading: "Your story deserves readers who feel it."
+hero_subheading: "ReGround helps fiction authors find the readers who were always meant to find them."
+intro: |
+  Writing a novel is a years-long act of faith. Finding the readers who will
+  actually connect with it shouldn't be left to chance. I work with authors
+  to understand both sides of that relationship — what it took to write the
+  book, and what a reader is searching for when they pick one up — and use
+  that to build a path between them.
+cta_text: "Get in touch"
+cta_link: "mailto:hello@reground.org"
+---