- Add `AiSettingsCard` component and server actions for configuring an
OpenAI-compatible AI endpoint (e.g. OpenWebUI) from the admin panel
- Introduce `AiSettings` Prisma model with masked API key display and
connection testing UI
- Track `completedAt` on todos with a migration and backfill for existing
completed items
- Surface `createdAt`, `updatedAt`, and `completedAt` in the todo edit
dialog via a new `formatDateTime` utility
- Update `TodoDTO`, `getBoard`, `createTodo`, `toggleTodo`, and the board
context to carry and optimistically update timestamp fields
- Add `Select` UI component built on `@base-ui/react`
- Add Project model with owner-based access and cascade delete
- Restructure Category to belong to either Home (userId) or a Project (projectId), enforced by DB constraints and access filters
- Scope all board operations (create, update, delete, reorder) to the correct board context using `categoryAccessFilter` and `projectAccessFilter`
- Replace hardcoded `revalidatePath("/")` with dynamic `boardPath()` for proper cache invalidation
- Add `ProjectsProvider` and `ProjectsNavSection` for project sidebar navigation
- Make KanbanBoard accept `projectId` and `title` props to render Home or Project boards
- Extract `getBoard()` utility to centralize board data fetching
- Refactor group/todo/notes actions to derive board context from category membership rather than trusting caller input
Brian Fertig