[CLAUDE] Infra: Plan B Hotfix CICD — SeedSampleContractWorkflowV2 OUT of DemoSeed gate

CICD Monitor post-deploy verify (Run #231 SUCCESS) caught CRITICAL:
SeedSampleContractWorkflowV2Async nested inside `if (!demoSeedDisabled)`
branch → prod has DemoSeed:Disabled=true (Plan T S23 t10) → seed SKIP →
QT-HD-V2-001 KHÔNG tồn tại prod → Drafter Workspace dropdown V2 EMPTY
→ V2 contract path BLOCKED end-to-end UAT.

Fix: PROMOTE SeedSampleContractWorkflowV2 ra ngoài DemoSeed gate. Lý do
architectural:
- Sample workflow là INFRASTRUCTURE config (như Roles + Departments + Catalogs)
- KHÔNG phải demo data wipeable
- Production cần để Drafter create V2 contract
- Admin có thể edit/delete/disable qua Designer sau seed (idempotent skip)

Pattern lesson reusable cross-project: phân biệt INFRASTRUCTURE seed (always
run) vs DEMO seed (gated by flag). Bảng phân loại:
- INFRASTRUCTURE always: Roles, Departments, Catalogs, MenuTree, AdminPerms, Templates
- DEMO gated: DemoUsers (30 sample, Plan T disabled prod), DemoContracts, DemoPE, SampleWorkflows
- INFRASTRUCTURE NEW post-S29: SampleContractWorkflowV2 (cần cho V2 path work)

Verify:
- dotnet build PASS 0 err
- Mig 32 + Mig 33 prod đã apply (Run #231 success)
- Sample seed sẽ chạy on next IIS recycle post-push
- Idempotent: skip nếu QT-HD-V2-001 already exists (rare race admin tự seed Designer trước)

Post-deploy expect:
- ApprovalWorkflows table +1 row Code=QT-HD-V2-001 ApplicableType=3 IsActive=1 IsUserSelectable=1
- Drafter login fe-user → /contracts/new → Workspace dropdown "Quy trình duyệt V2" có 1 option

CICD Monitor ROI: caught BEFORE bro UAT 401/empty dropdown experience. Smart
Friend guard pattern proven 4× cumulative S22 #44 + S25 #48 + S29 Plan B
Reviewer ApplicableType + S29 Plan B CICD DemoSeed gate.

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

src/Backend/SolutionErp.Infrastructure/Persistence/DbInitializer.cs

@@ -107,9 +107,18 @@ public static class DbInitializer
             await SeedDemoContractsAsync(db, userManager, codeGen, logger);
             await SeedDemoPurchaseEvaluationsAsync(db, userManager, logger);
             await SeedSampleApprovalWorkflowsV2Async(db, userManager, logger);
-            await SeedSampleContractWorkflowV2Async(db, userManager, logger);
         }
 
+        // [Plan B S29 2026-05-22 Hotfix CICD] SeedSampleContractWorkflowV2Async
+        // PROMOTED ra ngoài DemoSeed gate — đây là INFRASTRUCTURE workflow
+        // (như Roles + Departments + Catalogs), KHÔNG phải demo data wipeable.
+        // Production cần workflow V2 mẫu để Drafter create V2 contract end-to-end
+        // (Workspace dropdown filter ApplicableType=3 + IsUserSelectable=true).
+        // CICD Monitor S29 Plan B caught: nested inside gate → skip prod → V2
+        // path BLOCKED. Admin có thể edit/delete/disable qua Designer sau seed.
+        // Idempotent: skip nếu workflow QT-HD-V2-001 đã tồn tại.
+        await SeedSampleContractWorkflowV2Async(db, userManager, logger);
+
         await WarnDefaultAdminPasswordAsync(userManager, logger);
     }