feat(112): re-import data protection — delta-only re-import + project_generated preservation

Phase 112 / Plan 112-01 complete (v3.6):
- OrderImportRepository::upsertOrderAggregate split into create vs re-import paths
- replaceAddresses/Items/Notes/Shipments/StatusHistory invoked only on first import
- new updateOrderDelta() narrows UPDATE to status_code (cond.), payment_status,
  total_paid, is_canceled_by_buyer, source_updated_at, payload_json, fetched_at
- source-side cancellation override (is_canceled_by_buyer=1 OR pull status_code='anulowane')
- identical-payload no-op guard via normalizePayloadJson()
- fixes case #882: order_items.id stable, project_generated (Phase 97) preserved
- Phase 111 payment.status_changed emit retained without regression

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

.paul/ROADMAP.md

@@ -6,7 +6,7 @@ orderPRO to narzedzie do wielokanalowego zarzadzania sprzedaza. Projekt przechod
 
 ## Current Milestone
 
-Brak aktywnego milestone - v3.5 zamkniety. Nastepny milestone do zaplanowania.
+Brak aktywnego milestone - v3.6 zamkniety. Nastepny milestone do zaplanowania.
 
 ## Next Milestone
 
@@ -19,6 +19,19 @@ Kandydaci w kolejce:
 
 ## Completed Milestones
 
+<details>
+<summary>v3.6 Re-import Data Protection - 2026-05-07 (1 phase, 1 plan)</summary>
+
+Re-import istniejacego zamowienia (Allegro + shopPRO) jest delta-only: `replaceAddresses/Items/Notes` wywolywane wylacznie przy pierwszym imporcie, nowy `updateOrderDelta()` aktualizuje tylko pola realnie zmieniajace sie ze zrodla. Stabilne `order_items.id` chronia `project_generated` (Phase 97) i flow generowania PSD. Dodatkowo: propagacja anulowania ze zrodla (override niezalezny od statusOverwriteAllowed) i identical-payload no-op guard. Naprawa case #882 (znikajaca flaga "Projekt" po re-imporcie wymuszanym przez `payment.status_changed` z Phase 111).
+
+| Phase | Name | Plans | Status |
+|-------|------|-------|--------|
+| 112 | Re-import Data Protection | 1/1 | Complete |
+
+Archive: `.paul/phases/112-reimport-data-protection/`
+
+</details>
+
 <details>
 <summary>v3.5 Payment Transition Event - 2026-05-05 (1 phase, 1 plan)</summary>
 
@@ -467,4 +480,4 @@ Archive: `.paul/milestones/v0.1-ROADMAP.md`
 
 ---
 *Roadmap created: 2026-03-12*
-*Last updated: 2026-04-28 - v3.4 Statistics Summary milestone closed (Phase 110)*
+*Last updated: 2026-05-07 - v3.6 Re-import Data Protection milestone closed (Phase 112)*