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release-db-config-sync

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Compute the remote DB migration + Nacos config diff before a test release — apc release db-config-sync really spawns sync-test-migrations.ts --dry-run (never a stub) and diffs Nacos key dumps, stopping at the write boundary. green(0) no diff · staged(3) pending migrations/missing keys await approval · blocked(1) real script failed. Diff only, never writes the remote.

sdk/apc/skills/release-db-config-sync/SKILL.md

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Oct 22, 2026
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# release-db-config-sync

发版前算清**远端 DB 迁移**与 **Nacos 配置**的差异（`apc/01` §2 db-config-sync，收口步 3/4）。这是治 **R3**（"DB sync 走桩、`writes:0` 换马甲冒充已同步"）的真机制：它**真 spawn** `scripts/ops/sync-test-migrations.ts --dry-run`——真解析凭证、真连库、真算迁移计划——退出码由真脚本决定，**绝不注入桩**。Nacos 侧对两份 key dump 算真差集。**dry-run 永不写库、不写真 Nacos**——止于写入边界，真 apply 走审批后的远端路径。

**什么时候用**：`release-preflight` 绿之后、`release-tag` 之前，确认远端 test 环境的迁移账本和配置 key 都对齐了才发版。

## 承重纪律（先记死）

- **事故红线（memory / `apc/01` 开头）**：prod 曾因 Navicat 结构 diff 绕过迁移账本灌库出事故（丢回填 / 半应用）。**一切 DB sync 必须走账本，diff 工具只做审计不做写入。** 本 skill 就是账本路径的收口——**绝不教你拿 Navicat / 裸 SQL 去改远端**。
- **本 skill 只 dry-run**：算差异、出计划、停在写入边界。真 apply（把 pending 迁移打进 test RDS、把缺失 key 补进 Nacos）是**审批后**的远端动作（本机替身口径下 = M5），不由本 skill 执行。
- **别把桩当验过**：本机替身下 Nacos fetch 未接线时，key-diff 会**诚实标 `skipped`**（真路径 = M5）。看到 `skipped` 就照实报 ⬜，别写成"配置已核对无差异"。

## Anti-pattern（直接判红）
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