OpenCode 2 v2.0.23 adds a native Cohere provider and hardens editor use over ACP

The Oct 5 release adds a dedicated Cohere chat provider, keeps system prompts intact for Gemini, Mistral, and Cohere, retries flaky MCP connections, and fixes compaction and permission handling when OpenCode runs inside Zed, JetBrains, or Neovim via the Agent Client Protocol. Skill authors also get a disable-model-invocation: true frontmatter key that hides a skill from auto-invocation while keeping it loadable by ID.