docs(state): record plan 11.2-03 completion

.planning/ROADMAP.md

@@ -586,7 +586,7 @@ Plans:
 
 **Context:** `.planning/phases/11.2-ready-to-share-summercms-io-website-and-newsletter-plugin/11.2-CONTEXT.md` (D-01 to D-05, D-07, D-09 and D-12 still apply; see its supersession note)
 
-**Plans:** 2/3 plans executed
+**Plans:** 3/3 plans executed
 
 Plans:
 **Wave 1**
@@ -596,7 +596,7 @@ Plans:
 - [x] 11.2-02-PLAN.md — Framework PG15 verification and site_url/site_label (D-25, D-41, D-46), v0.1.0 tag checkpoint (D-42), sm-summercmsio-plugin static serving at / and /docs (D-07, D-47), sm-summercmsio-app wiring, build and smoke scripts, link and terminal checks (SC3, D-40), DEPLOY.md with nginx, supervisor and rollback
 
 **Wave 3** *(blocked on Wave 2 completion)*
-- [ ] 11.2-03-PLAN.md — Unit tests last: plugin rule table at 90%+ coverage, site_url/site_label branches, terminal-check helpers, check-phase11.2.sh gate, validated VALIDATION.md
+- [x] 11.2-03-PLAN.md — Unit tests last: plugin rule table at 90%+ coverage, site_url/site_label branches, terminal-check helpers, check-phase11.2.sh gate, validated VALIDATION.md
 
 ### Phase 11.3: Newsletter plugin and signup on summercms.io (INSERTED)
 
@@ -707,7 +707,7 @@ Phases execute in numeric order: 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 →
 | 10. Admin Vue SPA | 5/5 | Complete    | 2026-09-27 |
 | 11. Jobs, realtime and search infrastructure | 8/8 | In Progress|  |
 | 11.1. SummerCMS documentation for humans and AI agents | 7/7 | In Progress|  |
-| 11.2. summercms.io Alpha 0.1 landing page on SummerCMS | 2/3 | In Progress|  |
+| 11.2. summercms.io Alpha 0.1 landing page on SummerCMS | 3/3 | In Progress|  |
 | 11.3. Newsletter plugin and signup on summercms.io | 0/TBD | Not started | - |
 | 12. Płytarium API — Collections and Albums | 0/TBD | Not started | - |
 | 13. Płytarium API — wishlist, notifications, CSV, credentials, public routes | 0/TBD | Not started | - |