docs(18-07): record plan 07 progress in STATE and ROADMAP

.planning/ROADMAP.md

@@ -1113,7 +1113,7 @@ Plans:
   4. A host test proves the order-create, Stripe-pay and order-paid flow that Horoskopia relies on.
   5. The new code has unit tests, delivered in the phase's last plan.
 
-**Plans:** 6/7 plans executed
+**Plans:** 7/7 plans executed
 
 Plans:
 **Wave 1**
@@ -1135,7 +1135,7 @@ Plans:
 - [x] 18-06-PLAN.md — Customer order API `/_paymentgateway/api/v1` (D-06 contract gate, authz, twelve endpoints) and the new vue-paymentgateway-layer (typed client, Pg* components, i18n, tests); repository creation, fixture request, pushes and layer tag v0.1.0 with go-ahead
 
 **Wave 7** *(blocked on 18-01..18-06)*
-- [ ] 18-07-PLAN.md — Unit tests last: the 74-case PHP map, money and FSM matrices, legacy fixtures, security evidence, framework and layer tests, `scripts/check-phase18.sh`, validated 18-VALIDATION.md, final push approval
+- [x] 18-07-PLAN.md — Unit tests last: the 74-case PHP map, money and FSM matrices, legacy fixtures, security evidence, framework and layer tests, `scripts/check-phase18.sh`, validated 18-VALIDATION.md, final push approval
 
 ### Phase 18.1: Payment Gateway Subscriptions (INSERTED)
 
@@ -1340,7 +1340,7 @@ Phases execute in numeric order: 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 →
 | 15. Journal plugin | 4/4 | Complete   | 2026-10-06 |
 | 16. grzybyfunkcjonalne.pl on reusable blog views | 5/5 | In Progress|  |
 | 17. Blog companions | 6/6 | In Progress|  |
-| 18. Payment Gateway | 6/7 | In Progress|  |
+| 18. Payment Gateway | 7/7 | In Progress|  |
 | 18.1. Payment Gateway Subscriptions | 0/TBD | Not started | - |
 | 19. Chat and ChatChannels | 0/TBD | Not started | - |
 | 19.1. Chat satellites | 0/TBD | Not started | - |