[CLAUDE] Docs: S114 PE multi-NCC per hạng mục closeout (STATUS/HANDOFF/gotcha #81/Mig 65/session-log)

Closeout feature multi-NCC per hạng mục (ship d436af2):
- STATUS/HANDOFF: S114 blurb + CURRENT STATE canonical Mig 64→65 · test 477→486 · gotcha 80→81 · bundle D51OYyGV/BVdssm5S.
- gotcha #81: derived-invariant re-derive sót DELETE writer (DeleteQuote/DeleteDetail) → IsWinner kẹt stale → HĐ giaTri=0 phantom (Bước 4 fable-clone verify bắt; fix helper PeWinnerInvariant test-before).
- ef-core skill: +Mig 65 BackfillPeQuoteIsSelectedAndWinnerInvariant row.
- session log 2026-07-12-S114 + 2 reviewer diary harvest (verify run) + run-trace fold.
- cicd on-behalf record (garble #53 ×5 → em-main-solo deploy verify).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.claude/skills/ef-core-migration/SKILL.md

@@ -84,6 +84,7 @@ when-to-use:
 | **62** | **`ExpandSupplierFields`** | **🎯 S104 — Supplier 9→27 field (Phase A của 30-col NCC Excel import, anh Kiệt FDC): 18 AddColumn nullable + 18 DropColumn Down + `SupplierType +CaHai=6` append-only + enum `SupplierStatus` mới + guarded un-cram `Sql()` (clear legacy crammed Note 4 seeded rows exact-match, reversible). **No new table (89 giữ — 18 AddColumn/0 CreateTable)**. Seed fill-nulls-if-exists 30-field TRUONGGIANG/TANPHU/TGN/DONGDUONG idempotent. Commit `778fc98` shipped UN-closed-out → S104 docs-reconcile; prod-verified Run #488 PASS; 440 test #65-no-bite dù đổi chữ ký Create/UpdateSupplierCommand. Phase B (Excel-auto-map) defer.** |
 | **63** | **`AddSupplierImportSourceFields`** | **🎯 S112 — Supplier +`SourceUpdatedAt datetime2?` + `SourceUpdatedBy nvarchar(200)?` (import-provenance cột 29/30 file Excel "Database NCC" — Phase B Excel-import Phase B). 2 AddColumn nullable + 2 DropColumn Down (reversible). **No new table (89 giữ)**. Prod-verified Run #496 PASS `__EFMigrationsHistory` top + 2/2-col present; commit `e100ef0`.** |
 | **64** | **`AddSupplierPublishState`** | **🎯 S113 — Supplier +`IsPublic` bit NOT NULL default 0 (cổng công-bố "thiếu Mã NCC → nháp/ẩn" R4): AddColumn + `Sql("UPDATE Suppliers SET IsPublic=1")` backfill 37/37 prod→public + DropIndex→CreateIndex đổi Code filtered-unique `WHERE [IsDeleted]=0 AND [Code]<>''` (cho phép nhiều nháp Code=''). **No new table (89 giữ)**. Reversible Down (⚠️ edge: rollback sau khi có ≥2 nháp Code='' sẽ kẹt CreateIndex filter cũ). Prod-verified Run #497; commit `5fa11b5`. Kèm gotcha #80 (null-Code NRE NewSupplier).** |
+| **65** | **`BackfillPeQuoteIsSelectedAndWinnerInvariant`** | **🎯 S114 — DATA-ONLY no-schema (multi-NCC per hạng mục anh Kiệt): backfill **2-CHIỀU** thiết lập bất-biến `Supplier.IsWinner == Any(Quote.IsSelected)`. CHIỀU-1 `IsWinner→IsSelected` (phiếu cũ whole-supplier winner Mig58 → set IsSelected mọi quote NCC, **preserve tổng** winnerQuoteTotal) + CHIỀU-2 `IsSelected→IsWinner` (dormant/seed EXISTS). Idempotent (`WHERE ...=0`), SQL-Server-only (SQLite EnsureCreated bỏ qua migration), Down **no-op** (data backfill không reversible, mirror Mig 61). **No new table (89 giữ)** — snapshot UNCHANGED (0 CreateColumn). Prod-verified bundle rotate ×2 `D51OYyGV`/`BVdssm5S`; commit `d436af2`. Kèm **gotcha #81** (delete-writer sót re-derive IsWinner → phantom HĐ giaTri=0 — verify-bắt).** |
 
 Total: **89 bảng** `sys.tables` (= 88 dbo-app + `__EFMigrationsHistory`; re-ground S97 cicd Run #482 LIVE — số canonical → `docs/STATUS.md`; last schema-changing Mig 50 net 93→88-app, Mig 51-64 đều AddColumn/index/data-only/schema-expand không đổi số bảng). Xem `docs/database/schema-diagram.md` migration table + §11-15 module ERD (§16+ Mig 27-64 chi tiết pending).