fix(web): typecast handle() response in auth/join page to unblock TS build

The Hono RPC client loses the response shape on /organizations/:id because
the route has no zod response validator on c.json(). Tactical cast at the
callsite unblocks the web Docker build. Proper fix is to add a
getOrganizationResponseSchema in packages/api and wire it into the route.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/web/src/app/[locale]/auth/join/page.tsx

@@ -42,11 +42,16 @@ export default async function JoinPage({
   const invitation = await getInvitation({ id: invitationId });
 
   if (invitation) {
-    const { organization } = await handle(api.organizations[":id"].$get)({
+    // tactical typecast: Hono RPC inference loses the response shape on this
+    // route (no zod validator on the response). Proper fix is to add a
+    // getOrganizationResponseSchema to packages/api and wire it into the
+    // route's c.json() call.
+    const res = (await handle(api.organizations[":id"].$get)({
       param: {
         id: invitation.organizationId,
       },
-    });
+    })) as { organization: Parameters<typeof Invitation>[0]["organization"] | null };
+    const { organization } = res;
 
     if (!organization) {
       return notFound();