Merge PR #14: stabilize REV004 final summary docs anchor wording\n\nConstraint: Keep the final summary evergreen instead of self-expiring after each merge\nConfidence: high\nScope-risk: narrow\nDirective: Prefer stable branch-relative wording over self-referential merge SHAs in evergreen handoff docs\nTested: PR #14 wording reviewed against current docs mainline semantics\nNot-tested: No document export/render pipeline executed at merge time

This replaces the self-expiring docs latest-merge SHA in the final REV004
summary with a stable wording that points readers to current mainline content,
preventing the summary from going stale immediately after each merge.

Constraint: The top-level handoff summary must remain self-consistent after it is merged into main
Rejected: Keep chasing a concrete docs latest-merge SHA in follow-up patches | creates infinite self-expiring metadata churn
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: Prefer stable branch-relative wording over self-referential merge SHAs in evergreen handoff docs
Tested: Reviewed rendered markdown diff for semantic equivalence plus improved stability
Not-tested: No document export/render pipeline executed for this wording-only change

docs/guides/REV004_FINAL_MAINLINE_DELIVERY_SUMMARY.md

@@ -9,7 +9,7 @@
 ### docs
 - repo：`tangweijie/fujian_water_biz_doc`
 - branch：`main`
-- latest merge：`ab4eec0ea8dfeca49f7a4b913a53f73616f59f71`
+- latest mainline content：以当前 `main` 分支最新提交为准（此处不再固化 commit sha，避免总表在自我合并后立即过期）
 
 ---