Fix lint debt from admin overhaul; make check/lint/test/build green

- Scope @typescript-eslint/no-explicit-any off for *.spec.ts test doubles
- Type enhance() submit callbacks with SubmitFunction in api-keys page
- Drop as-any casts in proclamations upsert by using typed form data
- Fix useless regex escapes in profiles phone validation
- Remove unused locals param from api-keys load
- Use resolve() for admin nav/error links; store literal hrefs in adminModels
- Update README admin section and ADMIN_OVERHAUL lint caveat

src/routes/+layout.svelte

@@ -15,15 +15,31 @@
 
 	const isAdmin = $derived((data.userRoleId ?? 4) <= 3);
 	const adminModels = [
-		{ slug: 'users', displayName: 'Users' },
-		{ slug: 'profiles', displayName: 'Profiles' },
-		{ slug: 'user-roles', displayName: 'User Roles' },
-		{ slug: 'proclamations', displayName: 'Proclamations' },
-		{ slug: 'solfeggio-frequencies', displayName: 'Solfeggio Frequencies' },
-		{ slug: 'proclamation-categories', displayName: 'Proclamation Categories' },
-		{ slug: 'proclamation-groups', displayName: 'Proclamation Groups' },
-		{ slug: 'license-keys', displayName: 'License Keys' }
-	];
+		{ slug: 'users', href: '/admin/users', displayName: 'Users' },
+		{ slug: 'profiles', href: '/admin/profiles', displayName: 'Profiles' },
+		{ slug: 'user-roles', href: '/admin/user-roles', displayName: 'User Roles' },
+		{
+			slug: 'proclamations',
+			href: '/admin/proclamations',
+			displayName: 'Proclamations'
+		},
+		{
+			slug: 'solfeggio-frequencies',
+			href: '/admin/solfeggio-frequencies',
+			displayName: 'Solfeggio Frequencies'
+		},
+		{
+			slug: 'proclamation-categories',
+			href: '/admin/proclamation-categories',
+			displayName: 'Proclamation Categories'
+		},
+		{
+			slug: 'proclamation-groups',
+			href: '/admin/proclamation-groups',
+			displayName: 'Proclamation Groups'
+		},
+		{ slug: 'license-keys', href: '/admin/license-keys', displayName: 'License Keys' }
+	] as const;
 	const currentPath = $derived(page.url.pathname);
 
 	function isActive(path: string): boolean {
@@ -144,7 +160,7 @@
 							>
 								{#each adminModels as model (model.slug)}
 									<a
-										href="/admin/{model.slug}"
+										href={resolve(model.href)}
 										onclick={() => (adminOpen = false)}
 										class={`block rounded-md px-3 py-2 text-sm transition ${
 											isActive('/admin/' + model.slug)
@@ -307,7 +323,7 @@
 								<div class="mt-1 flex flex-col gap-1">
 									{#each adminModels as model (model.slug)}
 										<a
-											href="/admin/{model.slug}"
+											href={resolve(model.href)}
 											onclick={closeMenu}
 											class={`rounded-lg px-4 py-3 text-base transition ${activeClass('/admin/' + model.slug)}`}
 										>