Summary

• Replace command config Info.zod.safeParse with an Effect Schema decoder.
• Preserve invalid-command errors while reporting Effect parse causes.
• Remove the now-unused ConfigCommand.Info.zod compatibility static.

Testing

• bun typecheck from packages/opencode
• bun test --timeout 5000 test/config/config.test.ts -t "loads commands"
• bunx prettier --check packages/opencode/src/config/command.ts
• bunx oxlint packages/opencode/src/config/command.ts

Stack

1. Validate prompt messages with Effect Schema #26796
2. Parse command config with Effect Schema #26801 👈 current
3. Define project update input with Effect Schema #26803