* feat(delegate-task): add prometheus self-delegation block and delegate_task permission
- Block prometheus from delegating to itself via delegate_task
- Grant delegate_task permission to prometheus when called as subagent
- Other subagents still have delegate_task disabled
* feat(version): add OPENCODE_NATIVE_AGENTS_INJECTION_VERSION constant
* docs: add deprecation notes for directory-agents-injector
* feat(hooks): auto-disable directory-agents-injector for OpenCode 1.1.37+
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Co-authored-by: justsisyphus <justsisyphus@users.noreply.github.com>