docs: 新增技能维护节奏 MAINTENANCE.md #15

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qiudl merged 1 commits from docs/maintenance-cadence into main 2026-10-31 14:26:06 +00:00
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johnQ 26352c4c69 docs: 新增技能维护节奏 MAINTENANCE.md 并在 README 挂入口 2026-10-31 22:26:00 +08:00