Add repo Playwright smoke setup

README.md

@@ -70,7 +70,10 @@ Gameplay capabilities now include:
 
 - .NET SDK 10.0+
 - PowerShell 7+
+- Node.js 22+
 - Run `dotnet tool restore` once to enable the repo-local `dotnet-ef` command.
+- Run `npm ci` once to install the repo-local Playwright toolchain.
+- Run `npm exec playwright install chromium` once to install the browser used by local smoke tests.
 
 ## Local Development
 
@@ -84,6 +87,21 @@ Gameplay capabilities now include:
    ```
 3. Open `http://localhost:5000` (or the port shown in the console).
 
+Playwright helpers:
+
+- Install/update browser dependencies:
+  ```powershell
+  npm exec playwright install chromium
+  ```
+- Run the checked-in smoke test against an isolated temp SQLite database:
+  ```powershell
+  pwsh ./scripts/run-playwright.ps1
+  ```
+- Run the Playwright suite directly when the app is already running:
+  ```powershell
+  npm run e2e
+  ```
+
 VS Code F5 debug profiles are available in `.vscode/launch.json`:
 
 - `RpgRoller: Server`