[CLAUDE] Backout: Chunk D — K5 cleanup F2 zombie endpoint + UsersPage column + DTO field

Reviewer K2 Major #1: PATCH /api/users/{id}/allow-skip-final endpoint Admin tick =
NoOp swallow silent (K1 sentinel → confusion UX). Full backout Plan D S22 stack:

BE drop (7 files):
- UsersController.cs: DELETE PATCH /allow-skip-final endpoint + SetAllowDrafterSkipToFinalBody record
- UserFeatures.cs: DELETE SetUserAllowDrafterSkipToFinalCommand + Handler
                    + UserDto.AllowDrafterSkipToFinal field
                    + list/get DTO mapping sentinel-false references
- ApprovalWorkflow.cs: REWRITE stale narrative line 78-80 (Reviewer Major #2 Mig 31 semantic)
                       + docstring AllowApproverSkipToFinal line 108 clean stale Users storage ref
- PurchaseEvaluationFeatures.cs: REWRITE Command DTO comment line 401 (Reviewer Minor #3)
- ApprovalWorkflowConfiguration.cs: APPEND Mig 31 narrative line 22-24 (Reviewer Minor #4)
                                     + clean storage move comment line 87
- ApprovalWorkflowV2AdminFeatures.cs: clean DTO comment line 58 stale "F2 xuống User table"
- IPurchaseEvaluationWorkflowService.cs + PurchaseEvaluationDtos.cs: clean stale
  "storage Users.AllowDrafterSkipToFinal" comments

FE Admin drop (2 files):
- UsersPage.tsx: DELETE "Skip cuối" column + FastForward badge + FastForward import
                  + allowSkipMut mutation hook + FastForward toggle button
- types/users.ts: DELETE allowDrafterSkipToFinal field

fe-user KHÔNG đụng (no UsersPage admin-only; K6 sẽ handle Workspace Drafter checkbox).
FE Designer page KHÔNG đụng (K3 done; 2 stale comment leftover deferred K6).

Plan K refactor F2 storage Users → Levels (Mig 31) complete cumulative cleanup.
Pattern reusable: post-refactor full cleanup (BE endpoint + Command + DTO + FE column
+ types + stale narratives) atomic 1 commit thay vì leak zombie state.

Verify:
- dotnet build production projects 0 err (2 pre-existing DocxRenderer warn)
- npm build fe-admin 0 TS err (no new warning)
- Grep AllowDrafterSkipToFinal + allow-skip-final + allowDrafterSkipToFinal zero results
  across src/Backend (excl Migrations history) + fe-admin/src

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/Backend/SolutionErp.Application/Users/UserFeatures.cs

@@ -22,8 +22,7 @@ public record UserDto(
     string? DepartmentName,
     string? Position,
     bool CanBypassReview,
-    int? PositionLevel,      // Mig 18 — 1=NV, 2=PP, 3=TP. Null cho admin/system/external user.
-    bool AllowDrafterSkipToFinal);  // Mig 29 — F2 per-Drafter: cho phép Drafter gửi thẳng Cấp cuối khi tạo PE.
+    int? PositionLevel);     // Mig 18 — 1=NV, 2=PP, 3=TP. Null cho admin/system/external user.
 
 // ========== LIST ==========
 public record ListUsersQuery : PagedRequest, IRequest<PagedResult<UserDto>>;
@@ -62,9 +61,7 @@ public class ListUsersQueryHandler(UserManager<User> userManager, IApplicationDb
             var roles = await userManager.GetRolesAsync(u);
             var isLocked = u.LockoutEnd.HasValue && u.LockoutEnd.Value.UtcDateTime > now;
             string? deptName = u.DepartmentId is { } did && deptNames.TryGetValue(did, out var dn) ? dn : null;
-            // Mig 31 (S23 t1 K1) — F2 storage moved to ApprovalWorkflowLevels.
-            // DTO field kept transiently (K2 sẽ refactor DTO + drop field). Sentinel false.
-            items.Add(new UserDto(u.Id, u.Email!, u.FullName, u.IsActive, isLocked, u.CreatedAt, roles.ToList(), u.DepartmentId, deptName, u.Position, u.CanBypassReview, (int?)u.PositionLevel, false));
+            items.Add(new UserDto(u.Id, u.Email!, u.FullName, u.IsActive, isLocked, u.CreatedAt, roles.ToList(), u.DepartmentId, deptName, u.Position, u.CanBypassReview, (int?)u.PositionLevel));
         }
 
         return new PagedResult<UserDto>(items, total, request.Page, request.PageSize);
@@ -86,9 +83,7 @@ public class GetUserQueryHandler(UserManager<User> userManager, IApplicationDbCo
         string? deptName = null;
         if (u.DepartmentId is { } did)
             deptName = await db.Departments.AsNoTracking().Where(d => d.Id == did).Select(d => d.Name).FirstOrDefaultAsync(ct);
-        // Mig 31 (S23 t1 K1) — F2 storage moved to ApprovalWorkflowLevels.
-        // DTO field kept transiently (K2 sẽ refactor DTO + drop field). Sentinel false.
-        return new UserDto(u.Id, u.Email!, u.FullName, u.IsActive, isLocked, u.CreatedAt, roles.ToList(), u.DepartmentId, deptName, u.Position, u.CanBypassReview, (int?)u.PositionLevel, false);
+        return new UserDto(u.Id, u.Email!, u.FullName, u.IsActive, isLocked, u.CreatedAt, roles.ToList(), u.DepartmentId, deptName, u.Position, u.CanBypassReview, (int?)u.PositionLevel);
     }
 }
 
@@ -328,23 +323,7 @@ public class SetUserPositionLevelCommandHandler(UserManager<User> userManager)
     }
 }
 
-// ========== SET ALLOW DRAFTER SKIP TO FINAL (Mig 29 — F2 per-Drafter) ==========
-// Admin toggle AllowDrafterSkipToFinal cho 1 user. Khi true, user (Drafter) được
-// dùng checkbox "Gửi thẳng Cấp cuối" trong PE Workspace để skip toàn bộ Bước/Cấp
-// trung gian và bay thẳng tới Cấp cuối. Mặc định false (an toàn — Drafter phải
-// tuần tự qua mọi Bước/Cấp theo workflow).
-public record SetUserAllowDrafterSkipToFinalCommand(Guid Id, bool AllowDrafterSkipToFinal) : IRequest;
-
-public class SetUserAllowDrafterSkipToFinalCommandHandler(UserManager<User> userManager)
-    : IRequestHandler<SetUserAllowDrafterSkipToFinalCommand>
-{
-    public async Task Handle(SetUserAllowDrafterSkipToFinalCommand request, CancellationToken ct)
-    {
-        // Mig 31 (S23 t1 K1) — F2 storage moved to ApprovalWorkflowLevels.AllowApproverSkipToFinal
-        // (per-Approver slot, set via Workflow Designer). Command kept transiently NoOp until K2
-        // sẽ replace với SetApprovalWorkflowLevelAllowApproverSkipToFinalCommand + FE remove toggle.
-        _ = await userManager.FindByIdAsync(request.Id.ToString())
-            ?? throw new NotFoundException("User", request.Id);
-        await Task.CompletedTask;
-    }
-}
+// Mig 31 (S23 t1 Plan K Chunk D) — DELETED F2 Command + Handler per-Drafter.
+// F2 semantic + storage refactor sang ApprovalWorkflowLevels (per-Approver
+// slot, admin opt-in qua Workflow Designer). Plan K backout zombie Command.
+// Replaced bởi Workflow Designer per-Level toggle trong ApprovalWorkflowV2AdminFeatures.