feat: extract handicap score calculation logic into a new module and add unit tests

.github/workflows/ci.yml

@@ -0,0 +1,72 @@
+name: CI
+
+on:
+  push:
+    branches: [ main, master ]
+  pull_request:
+    branches: [ main, master ]
+
+jobs:
+  frontend:
+    name: Frontend CI
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: frontend
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Sync SvelteKit
+        run: npx svelte-kit sync
+
+      - name: Check Types
+        run: npm run check
+
+      - name: Lint
+        run: npm run lint
+
+      - name: Unit Tests
+        run: npm run test:unit
+
+      - name: Install Playwright Browsers
+        run: npx playwright install --with-deps
+
+      - name: E2E Tests
+        run: npm run test:e2e
+
+      - name: Build
+        run: npm run build
+
+  worker:
+    name: Worker CI
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: worker
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: worker/package-lock.json
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build
+        run: npx wrangler deploy --dry-run --outdir=dist

README.md

@@ -12,8 +12,8 @@ This repository now contains two main pieces:
 - `frontend/` — A SvelteKit (TypeScript) frontend scaffold. The home page (`src/routes/+page.svelte`) contains tiles that link to individual tools (e.g. `/handicap`).
 - `worker/` — A Cloudflare Worker scaffold (TypeScript) using `Hono` for lightweight API endpoints. It exposes `/api/handicap` and `/api/health` handlers.
 
-Quick start (local)
--
+## Quick start (local)
+
 Prereqs: Node 18+, npm, and `wrangler` for Cloudflare Workers.
 
 1. Frontend
@@ -32,11 +32,36 @@ npm install
 npx wrangler dev
 ```
 
-Deploy notes
+## Running Tests
+The frontend includes both end-to-end tests (Playwright) and unit tests (Vitest).
+
+```bash
+cd frontend
+```
+
+### Unit Tests
+```bash
+npm run test:unit
+```
+
+### End-to-End Tests
+```bash
+# Install Playwright browsers (first time only)
+npx playwright install
+# Run tests
+npm run test:e2e
+```
+
+### Run all tests
+```bash
+npm run test
+```
+
+### Deploy notes
 - Frontend: build with `npm run build` in `frontend/` and deploy to Cloudflare Pages. SvelteKit supports the Cloudflare adapter for Pages/Workers.
 - Worker: publish with `npx wrangler publish` (fill `account_id` in `worker/wrangler.toml`).
 
-Next steps
+### Next steps
 - Wire the frontend to the Worker API endpoints health endpoint
 - Implement availability tracker
 

frontend/eslint.config.js

@@ -19,8 +19,10 @@ export default defineConfig(
 			globals: { ...globals.browser, ...globals.node }
 		},
 		rules: { // typescript-eslint strongly recommend that you do not use the no-undef lint rule on TypeScript projects.
-		// see: https://typescript-eslint.io/troubleshooting/faqs/eslint/#i-get-errors-from-the-no-undef-rule-about-global-variables-not-being-defined-even-though-there-are-no-typescript-errors
-		"no-undef": 'off' }
+			// see: https://typescript-eslint.io/troubleshooting/faqs/eslint/#i-get-errors-from-the-no-undef-rule-about-global-variables-not-being-defined-even-though-there-are-no-typescript-errors
+			"no-undef": 'off',
+			"svelte/no-navigation-without-resolve": "off"
+		}
 	},
 	{
 		files: [