fix(web-admin): fix TypeScript cast error in normalize() for AppVersion

Cast via unknown first to satisfy strict TS type checker:
  ...(raw as unknown as AppVersion)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

it0-web-admin/src/infrastructure/repositories/api-app-version.repository.ts

@@ -10,7 +10,7 @@ import {
 /** Normalize version-service response: platform comes back as ANDROID/IOS, fileSize as bigint string */
 function normalize(raw: Record<string, unknown>): AppVersion {
   return {
-    ...(raw as AppVersion),
+    ...(raw as unknown as AppVersion),
     platform: (raw.platform as string).toLowerCase() as 'android' | 'ios',
     fileSize: raw.fileSize != null ? Number(raw.fileSize) : undefined,
   };