chore(agents): update skill metadata timestamps, source URLs, and documentation wording across dot_agents files

dot_agents/skills/shadcn/SKILL.md

@@ -64,7 +64,9 @@ These rules are **always enforced**. Each links to a file with Incorrect/Correct
 - **Use existing components before custom markup.** Check if a component exists before writing a styled `div`.
 - **Callouts use `Alert`.** Don't build custom styled divs.
 - **Empty states use `Empty`.** Don't build custom empty state markup.
-- **Toast via `sonner`.** Use `toast()` from `sonner`.
+- **Toast follows the project base.** Use `toast` from the `toast` component for
+  Base UI projects. Use `toast()` from `sonner` for Radix and React Aria
+  projects.
 - **Use `Separator`** instead of `<hr>` or `<div className="border-t">`.
 - **Use `Skeleton`** for loading placeholders. No custom `animate-pulse` divs.
 - **Use `Badge`** instead of custom styled spans.
@@ -135,7 +137,7 @@ These are the most common patterns that differentiate correct shadcn/ui code. Fo
 | Data display               | `Table`, `Card`, `Badge`, `Avatar`                                                                  |
 | Navigation                 | `Sidebar`, `NavigationMenu`, `Breadcrumb`, `Tabs`, `Pagination`                                     |
 | Overlays                   | `Dialog` (modal), `Sheet` (side panel), `Drawer` (bottom sheet), `AlertDialog` (confirmation)       |
-| Feedback                   | `sonner` (toast), `Alert`, `Progress`, `Skeleton`, `Spinner`                                        |
+| Feedback                   | `toast` (Base UI), `sonner` (Radix/Aria), `Alert`, `Progress`, `Skeleton`, `Spinner`                 |
 | Command palette            | `Command` inside `Dialog`                                                                           |
 | Charts                     | `Chart` (wraps Recharts)                                                                            |
 | Layout                     | `Card`, `Separator`, `Resizable`, `ScrollArea`, `Accordion`, `Collapsible`                          |

dot_agents/skills/shadcn/rules/composition.md

@@ -5,7 +5,7 @@
 - Items always inside their Group component
 - Callouts use Alert
 - Empty states use Empty component
-- Toast notifications use sonner
+- Toast notifications follow the project base
 - Choosing between overlay components
 - Dialog, Sheet, and Drawer always need a Title
 - Card structure
@@ -88,7 +88,19 @@ Chat components nest in a fixed order (`MessageScrollerProvider` → `MessageScr
 
 ---
 
-## Toast notifications use sonner
+## Toast notifications follow the project base
+
+For Base UI projects, use the `toast` component:
+
+```tsx
+import { toast } from "@/components/ui/toast"
+
+toast.add({
+  title: "Changes saved.",
+})
+```
+
+For Radix and React Aria projects, use Sonner:
 
 ```tsx
 import { toast } from "sonner"