Scaffold site: nav, stub sections, contact/privacy/terms, styling

Adds top nav links to Books/Authors/Submissions stub pages, and
Contact/Privacy/Terms pages modeled on reground-site's structure. Contact
form posts to the already-provisioned eec-twosquirrelspress backend.
Styling implements the press's brand palette and font choices.

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

hugo.toml

@@ -10,4 +10,36 @@ disableKinds = ["taxonomy", "term"]
 
 [params]
   env = "production"
-  author = "Will Estes"
+  author = "Will Estes"
+  description = "Two Squirrels Press — character-driven speculative fiction and poetry."
+  eec_base_url = "https://eec.twosquirrelspress.com"
+
+[[menu.main]]
+  name = "Books"
+  url = "/books/"
+  weight = 10
+
+[[menu.main]]
+  name = "Authors"
+  url = "/authors/"
+  weight = 20
+
+[[menu.main]]
+  name = "Submissions"
+  url = "/submissions/"
+  weight = 30
+
+[[menu.footer]]
+  name = "Contact"
+  url = "/contact/"
+  weight = 10
+
+[[menu.footer]]
+  name = "Privacy"
+  url = "/privacy/"
+  weight = 20
+
+[[menu.footer]]
+  name = "Terms"
+  url = "/terms/"
+  weight = 30