Fix Claude binary download to include all platforms

- Use claude:download:all to download binaries for arm64 and x64
- Removes continue-on-error so download failures are visible

Author: aadivar

.github/workflows/build-release.yml

@@ -38,8 +38,7 @@ jobs:
         run: bun install
 
       - name: Download Claude Code binaries
-        run: bun run claude:download
-        continue-on-error: true # May fail without proper auth
+        run: bun run claude:download:all
 
       - name: Build app
         run: bun run build