feat(attributes-import): import product attributes from shopPRO API into personalization

extractPersonalization() now reads both 'attributes' and 'custom_fields' fields
from the shopPRO API response, joining non-empty values with newline separator.
Previously only custom_fields was imported, causing product attributes like
"Woreczek jutowy", "Kolor koperty", "Zakrętka" to be lost during sync.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.paul/STATE.md

@@ -2,22 +2,22 @@
 
 ## Project Reference
 
-See: .paul/PROJECT.md (updated 2026-04-04)
+See: .paul/PROJECT.md (updated 2026-04-07)
 
 **Core value:** Sprzedawca moze obslugiwac zamowienia ze wszystkich kanalow sprzedazy i nadawac przesylki bez przelaczania sie miedzy platformami.
-**Current focus:** Milestone v3.0 - Phase 70 complete, ready for next PLAN
+**Current focus:** Milestone v3.0 - Phase 71 complete, ready for next PLAN
 
 ## Current Position
 
 Milestone: v3.0 Mobile Responsive - In progress
-Phase: 70 (Receipt Shipping Cost) — Complete
-Plan: 70-01 unified
+Phase: 71 (Attributes Import) — Complete
+Plan: 71-01 unified
 Status: Loop complete, ready for next PLAN
-Last activity: 2026-04-06 — Unified .paul/phases/70-receipt-shipping-cost/70-01-PLAN.md
+Last activity: 2026-04-07 — Unified .paul/phases/71-attributes-import/71-01-PLAN.md
 
 Progress:
-- Milestone: [#######...] ~72%
-- Phase 70: [##########] 100%
+- Milestone: [#######...] ~74%
+- Phase 71: [##########] 100%
 
 ## Loop Position
 
@@ -29,12 +29,12 @@ PLAN --> APPLY --> UNIFY
 
 ## Session Continuity
 
-Last session: 2026-04-06
-Stopped at: Plan 70-01 unified
+Last session: 2026-04-07
+Stopped at: Plan 71-01 unified
 Next action: Run /paul:plan for the next prioritized phase
-Resume file: .paul/phases/70-receipt-shipping-cost/70-01-SUMMARY.md
+Resume file: .paul/phases/71-attributes-import/71-01-SUMMARY.md
 
 ## Git State
 
-Last commit: 0e7ee95
+Last commit: 278f44b
 Branch: main