docs(11.2): create phase plan

.planning/ROADMAP.md

@@ -586,10 +586,17 @@ 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:** 0 plans
+**Plans:** 3 plans
 
 Plans:
-- [ ] TBD (run /gsd-plan-phase 11.2 to break down)
+**Wave 1**
+- [ ] 11.2-01-PLAN.md — vue-summercms-app: Nuxt 4 landing page matching the handoff (en-only i18n, @nuxt/fonts, @nuxtjs/seo with static OG, sun assets from logo.png, single-source terminal commands, Copy, scroll-spy, app config flags)
+
+**Wave 2** *(blocked on Wave 1 completion)*
+- [ ] 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-summercms-plugin static serving at / and /docs (D-07, D-47), sm-summercms-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
 
 ### Phase 11.3: Newsletter plugin and signup on summercms.io (INSERTED)