Rebuild admin pages around DataTable/AdminModal; restructure categories/groups and v2 groups API

Remove the generic $lib/svelte-admin CRUD layer and AdminTable.svelte; each
admin route now owns its own form/modal logic. Add DataTable.svelte,
superform-errors.ts, and profile-specific modal/field components.

Flatten proclamation categories/groups and drop subscription levels; add the
v2 groups API; update v1/v2 endpoints, serializers, auth, and regenerated
Prisma client with the new migrations.

Document the overhaul plan in docs/ADMIN_OVERHAUL.md.

AGENTS.md.bak

@@ -1,4 +1,4 @@
-# portal.Rhemawavetech.com
+# portal.radiantwavetech.com
 
 SvelteKit 2 + Svelte 5 (runes) + Tailwind CSS v4 + Prisma 7 + PostgreSQL + Better-Auth.
 
@@ -332,7 +332,7 @@ The `$effect` resets `dirty = false` on mount (when the record prop changes).
 | Template ID                    | Variables                                                       | Subject (API-level)            |
 | ------------------------------ | --------------------------------------------------------------- | ------------------------------ |
 | `automated-user-registration`  | `firstName`, `tempPassword`, `verifyUrl`, `loginUrl`            | "Your account is ready"        |
-| `license-key-delivery`         | `firstName`, `license_key`                                      | "Your Rhemawave License Key"   |
+| `license-key-delivery`         | `firstName`, `license_key`                                      | "Your Radiant Wave License Key" |
 | `email-verification-email`     | `target_email_address`, `verification_link`                     | "Verify your email address"    |
 
 Variables must be declared in the Resend template editor's Variables section. Undeclared variables render as literal `{{{varName}}}` text.