MY SKY: dashboard applet + full-page natal chart — TDD

- User model: sky_birth_dt/lat/lon/place/house_system/chart_data fields (lyric migration 0018)
- Applet seed: my-sky (6×6, dashboard context) via applets migration 0009
- dashboard/sky/ — full monoapplet page: natus form + D3 wheel, LS key scoped to dashboard:sky; saves to User model
- dashboard/sky/preview/ — PySwiss proxy (same logic as epic:natus_preview, no seat check)
- dashboard/sky/save/ — persists 6 sky fields to User via update_fields
- _applet-my-sky.html: tile with h2 link to /dashboard/sky/
- 2 FTs (applet→link→form, localStorage persistence) + 12 ITs — all green

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

src/apps/dashboard/urls.py

@@ -14,4 +14,7 @@ urlpatterns = [
     path('wallet/setup-intent', views.setup_intent, name='setup_intent'),
     path('wallet/save-payment-method', views.save_payment_method, name='save_payment_method'),
     path('kit-bag/', views.kit_bag, name='kit_bag'),
+    path('sky/', views.sky_view, name='sky'),
+    path('sky/preview/', views.sky_preview, name='sky_preview'),
+    path('sky/save/', views.sky_save, name='sky_save'),
 ]