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Install: curl -fsSL https://github.com/TessenLab/zero/releases/latest/download/install.sh | sh
Then: tessen auth:login · tessen zero · tessen opencode · opencode --model tessen/project-zero
Requires Node.js 20+ (macOS, Linux, WSL). Source commit: 5723a7d66c7f6fe369ba1efd87700511bbd6cd4c. Verify: sha256sum -c SHA256SUMS.
Windows (PowerShell, Node.js 20+): irm https://github.com/TessenLab/zero/releases/latest/download/install.ps1 | iex — then add the printed directory to your user PATH.
1.0.2: owner-only credential files on Windows (NTFS ACL); sessions, tasks, usage, credits, agents, discover no longer print placeholder data (they exit 1). End-to-end coding inference through the Gateway is not yet verified for this release.