Add the Workshops page and keep each sign-up on the site.

The form is built once to the settled field set, and a valid send is saved before anyone is emailed.

Co-authored-by: Cursor <cursoragent@cursor.com>

messages/en/pages/workshopInquiries.json

@@ -0,0 +1,17 @@
+{
+  "_comment": "Operator view of workshop inquiries. Access is a shared token, not a public page.",
+  "title": "Workshop inquiries",
+  "unlockLabel": "Access token",
+  "unlockButton": "Open inquiries",
+  "unlockError": "That token does not open inquiries.",
+  "empty": "No inquiries yet.",
+  "export": "Export CSV",
+  "columns": {
+    "when": "Received",
+    "organization": "Organization",
+    "kind": "Kind",
+    "members": "Members",
+    "route": "Route",
+    "contact": "Contact"
+  }
+}