chore: update TASK-46 progress — postMessage bridge + module switcher

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backlog/tasks/task-46 - Implement-Cross-App-Embedding-r-ecosystem-apps-in-rSpace-canvases.md

@@ -1,9 +1,10 @@
 ---
 id: TASK-46
 title: 'Implement Cross-App Embedding: r-ecosystem apps in rSpace canvases'
-status: To Do
+status: In Progress
 assignee: []
 created_date: '2026-02-18 20:07'
+updated_date: '2026-02-26 03:50'
 labels:
   - feature
   - phase-5
@@ -60,7 +61,15 @@ Runtime:
 - [ ] #3 Trusted Web Components share CRDT and port/event system
 - [ ] #4 Sandboxed iframe mode works with postMessage bridge
 - [ ] #5 Server proxy avoids CORS for manifest/module loading
-- [ ] #6 Toolbar dynamically shows ecosystem app buttons
-- [ ] #7 Remote clients lazy-load modules when ecosystem shapes appear
+- [x] #6 Toolbar dynamically shows ecosystem app buttons
+- [x] #7 Remote clients lazy-load modules when ecosystem shapes appear
 - [ ] #8 Service Worker caches ecosystem modules for offline
 <!-- AC:END -->
+
+## Implementation Notes
+
+<!-- SECTION:NOTES:BEGIN -->
+POC implemented in commit 50f0e11: folk-rapp shape type embeds live rApp modules as iframes on the canvas. Toolbar rApps section creates folk-rapp shapes with r-prefixed moduleIds. Module picker dropdown, colored header with badge, open-in-tab action, Automerge sync. Remaining: manifest protocol, EcosystemBridge, sandboxed mode, Service Worker caching, remote lazy-loading.
+
+Enhanced in 768ea19: postMessage bridge (parent↔iframe context + shape events), module switcher dropdown, open-in-tab navigation. AC#7 (remote lazy-load) works — newShapeElement switch handles folk-rapp from sync.
+<!-- SECTION:NOTES:END -->