Hubo v0.4.6

What's changed

• Add OpenCode support with resumable task_id sessions, installation instructions, and explicit /hubo and /hubo-review activation.
• Inline Hubo's complete shared principles for delegated reviewers instead of relying on external links.
• Mark both skills for explicit invocation only.
• Shorten the Codex picker description and refresh the English and Simplified Chinese documentation.

Validation

• Installed both skills into an isolated OpenCode project and verified OpenCode discovers hubo and hubo-review.
• Verified the installed reference files include the OpenCode adapter.
• Validated every JSON manifest with jq.
• Passed git diff --check.