[brew-browser] Upgrade-all failed

brew-browser: 0.6.0
Homebrew: 6.0.11
Error code: brew_exit_non_zero
Command: brew upgrade
Exit code: 1

stderr excerpt:

…(truncated)…
O_REQUIRE_TAP_TRUST=1
This is not recommended and will be removed in a later release.
For more information, see:
  https://docs.brew.sh/Tap-Trust
✔︎ Bottle Manifest container (1.1.0)
✔︎ Bottle Manifest pnpm (11.13.0)
✔︎ Bottle Manifest c-ares (1.34.8)
✔︎ Bottle Manifest fontconfig (2.18.2)
✔︎ Bottle Manifest go (1.26.5)
✔︎ Bottle Manifest uv (0.11.28)
✔︎ Bottle Manifest fish (4.8.1)
✔︎ Bottle Manifest docker-compose (5.3.1)
✔︎ Bottle Manifest libffi (3.7.1)
✔︎ Bottle Manifest docker-compose (5.3.1)
✔︎ Bottle Manifest block-goose-cli (1.42.0)
✔︎ Bottle Manifest p11-kit (0.26.4)
✔︎ Bottle Manifest node (26.5.0)
✔︎ Bottle Manifest container-compose (1.1.0)
✔︎ Bottle libffi (3.7.1)
✔︎ Bottle c-ares (1.34.8)
✔︎ API Source betterdisplay.rb
✔︎ Bottle fontconfig (2.18.2)
✔︎ Bottle p11-kit (0.26.4)
✔︎ Bottle fish (4.8.1)
✔︎ Bottle docker-compose (5.3.1)
✔︎ Bottle pnpm (11.13.0)
✔︎ Cask 1password-cli (2.35.0)
✔︎ Cask tablepro (0.56.2)
✔︎ Cask betterdisplay (4.3.5)
✔︎ Cask whatcable (1.1.9)
✔︎ Bottle container-compose (1.1.0)
✔︎ Bottle node (26.5.0)
✔︎ Bottle uv (0.11.28)
✘ Cask whatsapp (26.28.12)
Error: Download failed on Cask 'whatsapp' with message: Download failed: https://web.whatsapp.com/desktop/mac_native/release/?version=2.26.28.12&extension=zip&configuration=Release&branch=master&is_buck=true
curl: (92) HTTP/2 stream 1 was not closed cleanly: INTERNAL_ERROR (err 2)
✘ Cask nvidia-sync (0.100.18)
Error: Download failed on Cask 'nvidia-sync' with message: Download failed: https://workbench.download.nvidia.com/stable/nvidia-sync/0.100.18/nvidia-sync.dmg
curl: (18) Transferred a partial file
✔︎ Bottle go (1.26.5)
✔︎ Bottle container (1.1.0)
✔︎ Bottle block-goose-cli (1.42.0)
✔︎ Cask codex (0.144.3)
✔︎ Cask discord (0.0.399)
✔︎ Cask 1password-cli (2.35.0)
✔︎ API Source betterdisplay.rb
✔︎ Cask betterdisplay (4.3.5)
✔︎ Cask codex (0.144.3)
✔︎ Cask discord (0.0.399)
✔︎ Cask tablepro (0.56.2)
✔︎ Cask whatcable (1.1.9)
✔︎ Cask whatsapp (26.28.12)
✔︎ Cask nvidia-sync (0.100.18)

Replace this line with what you were doing when the error appeared, and what you expected to happen.

The report concerns the upgrade-all flow invoking brew upgrade; start by reproducing it with brew-browser 0.6.0 and Homebrew 6.0.11, focusing on the non-zero exit and the failed WhatsApp and NVIDIA Sync downloads. Done should mean the cause and expected handling of this failure are established, with the observed behavior covered by an appropriate regression check.