fix(build): resolve type errors in communications + stripe apiVersion

Two pre-existing type errors that were masking each other in the Gitea build
(Next.js's build worker exits on the first type-check failure):

1. src/app/admin/communications/page.tsx — the no-brand early-return was
   passing initialAnalytics={{ success: true, analytics: null }} to a prop
   typed as CampaignAnalytics[]. Switched to initialAnalytics={[]}.

2. Six files passed apiVersion: "2026-06-24.dahlia" to new Stripe(...), but
   the installed stripe SDK 22.x union type only contains older API
   versions. The five files using `as StripeApiVersion` (a local literal
   type) didn't bypass the SDK's union check; the sixth had no cast at all.
   Changed all to `as any` to pin a forward-dated API version safely.

Build verified locally: npm run build succeeds.

src/actions/billing/retail-checkout.ts

@@ -25,7 +25,7 @@ await getSession();  const stripeKey = process.env.STRIPE_SECRET_KEY;
   if (!stripeKey) return { success: false, error: "Stripe not configured on this server." };
 
   const Stripe = (await import("stripe")).default;
-  const stripe = new Stripe(stripeKey, { apiVersion: "2026-06-24.dahlia" as StripeApiVersion });
+  const stripe = new Stripe(stripeKey, { apiVersion: "2026-06-24.dahlia" as any });
 
   const lineItems = items.map((item) => ({
     price_data: {

src/actions/billing/retail-payment-intent.ts

@@ -51,7 +51,7 @@ await getSession();  const stripeKey = process.env.STRIPE_SECRET_KEY;
   }
 
   const Stripe = (await import("stripe")).default;
-  const stripe = new Stripe(stripeKey, { apiVersion: "2026-06-24.dahlia" as StripeApiVersion });
+  const stripe = new Stripe(stripeKey, { apiVersion: "2026-06-24.dahlia" as any });
 
   // Compute the subtotal in cents. We don't compute sales tax here —
   // Stripe's `automatic_tax` would be ideal but requires address collection

src/actions/billing/stripe-checkout.ts

@@ -60,7 +60,7 @@ await getSession();
   }
 
   const Stripe = (await import("stripe")).default;
-  const stripe = new Stripe(stripeKey, { apiVersion: "2026-06-24.dahlia" as StripeApiVersion });
+  const stripe = new Stripe(stripeKey, { apiVersion: "2026-06-24.dahlia" as any });
 
   const siteUrl = process.env.NEXT_PUBLIC_SITE_URL ?? "http://localhost:3000";
 
@@ -144,7 +144,7 @@ await getSession();
   }
 
   const Stripe = (await import("stripe")).default;
-  const stripe = new Stripe(stripeKey, { apiVersion: "2026-06-24.dahlia" as StripeApiVersion });
+  const stripe = new Stripe(stripeKey, { apiVersion: "2026-06-24.dahlia" as any });
 
   // Retrieve subscription and find the item for this add-on
   const subscription = await stripe.subscriptions.retrieve(subData.stripe_subscription_id);

src/actions/billing/stripe-portal.ts

@@ -50,7 +50,7 @@ await getSession();  const adminUser = await getAdminUser();
   }
 
   const Stripe = (await import("stripe")).default;
-  const stripe = new Stripe(stripeKey, { apiVersion: "2026-06-24.dahlia" as StripeApiVersion });
+  const stripe = new Stripe(stripeKey, { apiVersion: "2026-06-24.dahlia" as any });
 
   const session = await stripe.billingPortal.sessions.create({
     customer: stripeCustomerId,

src/app/admin/communications/page.tsx

@@ -38,7 +38,7 @@ export default async function CommunicationsRootPage() {
         templates={[]}
         brandId=""
         initialSegments={[]}
-        initialAnalytics={{ success: true, analytics: null }}
+        initialAnalytics={[]}
       />
     );
   }

src/lib/stripe-billing.ts

@@ -13,7 +13,7 @@ function getStripeClient(): Stripe {
       throw new Error("STRIPE_SECRET_KEY environment variable is not set");
     }
     _stripe = new Stripe(process.env.STRIPE_SECRET_KEY, {
-      apiVersion: "2026-06-24.dahlia",
+      apiVersion: "2026-06-24.dahlia" as any,
     });
   }
   return _stripe;