Initial commit: omp-advisor DSH plugin (oh-my-pi port) with docs and tests

locale/en.json

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+{ "meta": { "title": "OMP Advisor", "description": "A second model reviews every agent step and injects notes, concerns or hard blockers into the conversation." } }

locale/zh.json

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+{ "meta": { "title": "OMP 顾问", "description": "第二个模型审查智能体的每一步，并向对话中注入提示、疑虑或阻断意见。" } }