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<title>开发运维一体化流水线反馈闭环</title><desc>image_type=feedback_loop; target_section=开篇总览; purpose=展示代码提交、流水线、发布、观测反馈和复盘更新之间的开发运维闭环; key_terms=代码提交,CI/CD流水线,GitOps发布,可观测反馈,回滚审计; reader_task=理解开发运维一体化不是工具清单而是变更事实链闭环</desc>
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