Add Prettier and ESLint tooling (Refs #77)

README.md

@@ -7,7 +7,7 @@ a small Python agent.
 
 ![Fleet overview showing sample T5 and T6 lobbies, player counts, and match rounds](docs/assets/fleet.png)
 
-*Fleet overview with sample data.*
+_Fleet overview with sample data._
 
 ## Features
 
@@ -58,7 +58,7 @@ doesn't need a Docker socket or direct access to your game-server files.
 ## Development
 
 The controller uses SvelteKit, TypeScript, and SQLite. The host agent uses the
-Python 3 standard library. For local development, install Node.js 22.12+ and Python 3:
+Python 3 standard library. For local development, install Node.js 22.13+ and Python 3:
 
 ```sh
 npm ci
@@ -72,8 +72,11 @@ database defaults to `./data/cherry.db`; keep it separate from production data.
 `npm run dev` packages the downloadable agent before starting the server.
 
 ```sh
+npm run lint
 npm run check
 npm test
 npm run test:agent
 npm run build
 ```
+
+Run `npm run format` to apply the repository's Prettier formatting.