The upstream OpenCode installer pipes `curl -# -L | tar xz` which fails
in container exec environments (Sprite, E2B, Modal, Daytona) where the
binary stream gets corrupted through the exec layer, producing
"gzip: stdin: not in gzip format" errors.
Added opencode_install_cmd() to shared/common.sh that downloads the
binary to a file first, then extracts it. Updated all 17 opencode.sh
scripts to use this robust method instead of the upstream installer.
The previous fix (#44) only addressed Sprite with a hardcoded
linux-x86_64 architecture. This fix detects OS/arch dynamically and
applies to all cloud providers.
Fixes#42
Co-authored-by: Sprite <noreply@sprite.dev>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
