T09b overlays: lightbox, spotlight and tour, floating toolbar, peek; images fill their box; overlays take focus back when its element leaves the tree

tasks/ch01-10.md

@@ -305,7 +305,7 @@
 - [x] QuickSwitcher → `navigation::QuickSwitcher`
 - [x] SearchPalette → `navigation::SearchPalette`
 - [x] SpotlightSearch → `navigation::SearchPalette`; T04 QuickLauncher opens it always on top
-- [x] Tour / Onboarding → lands with Overlays (T09): its steps are Coachmarks
+- [x] Tour / Onboarding → `overlays::Tour` (T09b): its steps are Spotlights
 
 ## T08a Menus · Menu & hosts — `src/menus`
 
@@ -341,17 +341,17 @@
 
 ## T09b Overlays · Guides & floats
 
-- [ ] Lightbox
-- [ ] Spotlight / Coachmark — also T07c Tour / Onboarding and T37 WelcomeTour
-- [ ] FloatingToolbar
-- [ ] Callout / Peek
-- [ ] DropdownPanel → `overlays::Popover`
-- [ ] InlinePopup → `overlays::Popover`
-- [ ] ToastViewport
+- [x] Lightbox → `overlays::Lightbox`, `overlays::Slide`
+- [x] Spotlight / Coachmark → `overlays::Spotlight`; also T07c Tour / Onboarding and T37 WelcomeTour as `overlays::Tour`
+- [x] FloatingToolbar → `overlays::FloatingToolbar`
+- [x] Callout / Peek → `overlays::Peek`
+- [x] DropdownPanel → `overlays::Popover`
+- [x] InlinePopup → `overlays::Popover` with the Link variant
+- [x] ToastViewport → lands with Feedback (T10): it holds Toasts
 
 ## T10 Feedback — `src/feedback`
 
-- [ ] Toast — success, error, warning, info, action, undo
+- [ ] Toast — success, error, warning, info, action, undo; also T09b ToastViewport
 - [ ] Notification
 - [ ] NotificationCenter
 - [ ] Alert

tasks/ch31-43.md

@@ -167,7 +167,7 @@
 ## T37 Onboarding & Help — `src/onboarding`
 
 - [ ] OnboardingWizard
-- [ ] WelcomeTour → `overlays::Tour` (T09)
+- [ ] WelcomeTour → `overlays::Tour` (T09b)
 - [ ] Coachmark / Hotspot — Coachmark → `overlays::Spotlight`; Hotspot here
 - [ ] FeatureHighlight / NewBadge
 - [ ] Checklist (first-run tasks)