Replace retry loop with intelligent fallback strategy: - Try default installer first (better for version discovery) - On failure, fallback to pinned version 1.0.204 - Handle corrupted downloads with direct fallback install This addresses the sisyphus-agent workflow failure where OpenCode's installer failed with 'Failed to fetch version information' error. 🤖 Generated with assistance of OhMyOpenCode (https://github.com/code-yeongyu/oh-my-opencode)