diff --git a/ROADMAP.md b/ROADMAP.md
index 0b75d1d..25895b4 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -151,7 +151,23 @@ Design doc: `docs/DESIGN-surface-runners.md`
 | Runner result API | done | `POST/GET /api/v1/admin/test-runners/results`. In-memory store, 4 Go tests. |
 | CI integration | done | `test-runners` stage in Gitea CI. Playwright driver, `wait-for-healthy.sh`. |
 
-### v0.7.3 — Headless E2E Automation
+### v0.7.3 — Extension Shell Migration + Headless E2E
+
+**Extension Shell Migration**
+
+Chat, Notes, and Schedules still use the old `sw.shell.Topbar` component,
+producing a double topbar (shell-injected + surface-owned). Migrate all
+three to the v0.7.0 shell contract (`sw.shell.topbar.setTitle/setSlot`),
+same pattern as the kernel surface migrations.
+
+| Step | Status | Description |
+|------|--------|-------------|
+| Chat → shell topbar | | Delete `<Topbar>`, use `setTitle('Chat')` + `setSlot()` for thread title/people button. |
+| Notes → shell topbar | | Delete `<Topbar>`, use `setTitle('Notes')` + `setSlot()` for sidebar tabs/search. |
+| Schedules → shell topbar | | Delete `<Topbar>`, use `setTitle('Schedules')`. Pattern A (title only). |
+| Update package runner tests | | Assert shell topbar present, no double topbar, on migrated surfaces. |
+
+**Headless E2E Automation**
 
 | Step | Status | Description |
 |------|--------|-------------|