docs(phase-20): update tracking after wave 1

.planning/ROADMAP.md

@@ -1533,11 +1533,11 @@ Plans:
   3. The demo is deployed publicly: the frontend is open, `/backend` is not reachable from the public internet, and the site carries a "want to see the backend? contact Golem15" call to action.
   4. The new code has unit tests, delivered in the phase's last plan.
 
-**Plans:** 6 plans
+**Plans:** 1/6 plans executed
 
 Plans:
 **Wave 1**
-- [ ] 20-01-PLAN.md — shared plugin release: siblings fast-forwarded, chat and forum pre-save seams (D-18), new sm-moderation-plugin (D-17), go.mod fixes, eight tags after go-ahead
+- [x] 20-01-PLAN.md — shared plugin release: siblings fast-forwarded, chat and forum pre-save seams (D-18), new sm-moderation-plugin (D-17), go.mod fixes, eight tags after go-ahead
 
 **Wave 2** *(blocked on Wave 1 completion)*
 - [ ] 20-02-PLAN.md — demo backend: oauthserver bump (folded todo), eight plugins mounted by tag, demo context and channel adapter, bootstrap endpoints, realtime for members, slash commands, moderation wiring, EN/PL seed and reset, Centrifugo namespaces, local LiveKit
@@ -1804,7 +1804,7 @@ Phases execute in numeric order: 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 →
 | 19.6.1. Backend Administrators screen (INSERTED) | 5/5 | Complete    | 2026-10-22 |
 | 19.7. Generic MCP module | 9/9 | In Progress|  |
 | 19.8. Console commands overhaul (INSERTED) | 6/6 | In Progress|  |
-| 20. Demo instance with every shared plugin | 0/TBD | Not started | - |
+| 20. Demo instance with every shared plugin | 1/6 | In Progress|  |
 | 30. Płytarium cutover | 0/TBD | Not started | - |
 | 31. Chat polish against WavePath clients | 0/TBD | Not started | - |
 | 32. SEO foundation | 6/6 | In Progress|  |