## 1. MudBlazor Setup

- [x] 1.1 Install MudBlazor 9.2.0 NuGet package in ChatAgent.Client
- [x] 1.2 Add MudBlazor CSS, JS, and Material Design Icons font to index.html (remove Bootstrap CSS)
- [x] 1.3 Add `@using MudBlazor` to _Imports.razor
- [x] 1.4 Register MudBlazor services (`AddMudServices()`) in Program.cs
- [x] 1.5 Add MudThemeProvider, MudPopoverProvider, MudDialogProvider to MainLayout.razor

## 2. Layout Migration

- [x] 2.1 Replace MainLayout.razor with MudBlazor layout (MudLayout, MudAppBar, MudMainContent)
- [x] 2.2 Remove NavMenu.razor (Bootstrap navbar no longer needed)
- [x] 2.3 Remove MainLayout.razor.css (MudBlazor handles styling)

## 3. Shared Model

- [x] 3.1 Create ChatMessage.cs in ChatAgent.Shared/Models with Role, Content, Timestamp

## 4. Chat Page

- [x] 4.1 Create Chat.razor at route `/` with message list and input area
- [x] 4.2 Implement message display with MudPaper cards (distinct styling for user vs assistant)
- [x] 4.3 Implement text input with MudTextField and send button adornment
- [x] 4.4 Wire Enter key and send button to submit handler
- [x] 4.5 Block empty/whitespace-only submissions
- [x] 4.6 Add hardcoded assistant response after each user message
- [x] 4.7 Implement auto-scroll to bottom on new messages

## 5. Cleanup

- [x] 5.1 Move Home.razor route from `/` to `/health`
- [x] 5.2 Remove Counter.razor and Weather.razor
- [x] 5.3 Update app.css — remove Bootstrap-specific styles, keep custom styles that still apply

## 6. Verify

- [x] 6.1 Run `dotnet build` on the solution to confirm no errors
- [ ] 6.2 Manually verify: chat page loads at `/`, messages display correctly, hardcoded response works