diff --git a/app/package-lock.json b/app/package-lock.json
index 8a51968..436d500 100644
--- a/app/package-lock.json
+++ b/app/package-lock.json
@@ -27,6 +27,7 @@
 				"@sveltejs/adapter-cloudflare": "^5.0.3",
 				"@sveltejs/kit": "^2.16.0",
 				"@sveltejs/vite-plugin-svelte": "^5.0.0",
+				"@vitest/coverage-v8": "^3.0.5",
 				"autoprefixer": "^10.4.20",
 				"daisyui": "^4.12.23",
 				"eslint": "^9.18.0",
@@ -95,6 +96,16 @@
 				"node": ">=6.9.0"
 			}
 		},
+		"node_modules/@babel/helper-string-parser": {
+			"version": "7.25.9",
+			"resolved": "https://registry.npmjs.org/@babel/helper-string-parser/-/helper-string-parser-7.25.9.tgz",
+			"integrity": "sha512-4A/SCr/2KLd5jrtOMFzaKjVtAei3+2r/NChoBNoZ3EyP/+GlhoaEGoWOZUmFmoITP7zOJyHIMm+DYRd8o3PvHA==",
+			"dev": true,
+			"license": "MIT",
+			"engines": {
+				"node": ">=6.9.0"
+			}
+		},
 		"node_modules/@babel/helper-validator-identifier": {
 			"version": "7.25.9",
 			"resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.25.9.tgz",
@@ -105,6 +116,22 @@
 				"node": ">=6.9.0"
 			}
 		},
+		"node_modules/@babel/parser": {
+			"version": "7.26.9",
+			"resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.26.9.tgz",
+			"integrity": "sha512-81NWa1njQblgZbQHxWHpxxCzNsa3ZwvFqpUg7P+NNUU6f3UU2jBEg4OlF/J6rl8+PQGh1q6/zWScd001YwcA5A==",
+			"dev": true,
+			"license": "MIT",
+			"dependencies": {
+				"@babel/types": "^7.26.9"
+			},
+			"bin": {
+				"parser": "bin/babel-parser.js"
+			},
+			"engines": {
+				"node": ">=6.0.0"
+			}
+		},
 		"node_modules/@babel/runtime": {
 			"version": "7.26.9",
 			"resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.26.9.tgz",
@@ -118,6 +145,30 @@
 				"node": ">=6.9.0"
 			}
 		},
+		"node_modules/@babel/types": {
+			"version": "7.26.9",
+			"resolved": "https://registry.npmjs.org/@babel/types/-/types-7.26.9.tgz",
+			"integrity": "sha512-Y3IR1cRnOxOCDvMmNiym7XpXQ93iGDDPHx+Zj+NM+rg0fBaShfQLkg+hKPaZCEvg5N/LeCo4+Rj/i3FuJsIQaw==",
+			"dev": true,
+			"license": "MIT",
+			"dependencies": {
+				"@babel/helper-string-parser": "^7.25.9",
+				"@babel/helper-validator-identifier": "^7.25.9"
+			},
+			"engines": {
+				"node": ">=6.9.0"
+			}
+		},
+		"node_modules/@bcoe/v8-coverage": {
+			"version": "1.0.2",
+			"resolved": "https://registry.npmjs.org/@bcoe/v8-coverage/-/v8-coverage-1.0.2.tgz",
+			"integrity": "sha512-6zABk/ECA/QYSCQ1NGiVwwbQerUCZ+TQbp64Q3AgmfNvurHH0j8TtXa1qbShXA6qqkpAj4V5W8pP6mLe1mcMqA==",
+			"dev": true,
+			"license": "MIT",
+			"engines": {
+				"node": ">=18"
+			}
+		},
 		"node_modules/@chromatic-com/storybook": {
 			"version": "3.2.4",
 			"resolved": "https://registry.npmjs.org/@chromatic-com/storybook/-/storybook-3.2.4.tgz",
@@ -1677,6 +1728,16 @@
 				"node": ">=12"
 			}
 		},
+		"node_modules/@istanbuljs/schema": {
+			"version": "0.1.3",
+			"resolved": "https://registry.npmjs.org/@istanbuljs/schema/-/schema-0.1.3.tgz",
+			"integrity": "sha512-ZXRY4jNvVgSVQ8DL3LTcakaAtXwTVUxE81hslsyD2AtoXW/wVob10HkOJ1X/pAlcI7D+2YoZKg5do8G/w6RYgA==",
+			"dev": true,
+			"license": "MIT",
+			"engines": {
+				"node": ">=8"
+			}
+		},
 		"node_modules/@jridgewell/gen-mapping": {
 			"version": "0.3.8",
 			"resolved": "https://registry.npmjs.org/@jridgewell/gen-mapping/-/gen-mapping-0.3.8.tgz",
@@ -3777,6 +3838,49 @@
 				"url": "https://opencollective.com/typescript-eslint"
 			}
 		},
+		"node_modules/@vitest/coverage-v8": {
+			"version": "3.0.5",
+			"resolved": "https://registry.npmjs.org/@vitest/coverage-v8/-/coverage-v8-3.0.5.tgz",
+			"integrity": "sha512-zOOWIsj5fHh3jjGwQg+P+J1FW3s4jBu1Zqga0qW60yutsBtqEqNEJKWYh7cYn1yGD+1bdPsPdC/eL4eVK56xMg==",
+			"dev": true,
+			"license": "MIT",
+			"dependencies": {
+				"@ampproject/remapping": "^2.3.0",
+				"@bcoe/v8-coverage": "^1.0.2",
+				"debug": "^4.4.0",
+				"istanbul-lib-coverage": "^3.2.2",
+				"istanbul-lib-report": "^3.0.1",
+				"istanbul-lib-source-maps": "^5.0.6",
+				"istanbul-reports": "^3.1.7",
+				"magic-string": "^0.30.17",
+				"magicast": "^0.3.5",
+				"std-env": "^3.8.0",
+				"test-exclude": "^7.0.1",
+				"tinyrainbow": "^2.0.0"
+			},
+			"funding": {
+				"url": "https://opencollective.com/vitest"
+			},
+			"peerDependencies": {
+				"@vitest/browser": "3.0.5",
+				"vitest": "3.0.5"
+			},
+			"peerDependenciesMeta": {
+				"@vitest/browser": {
+					"optional": true
+				}
+			}
+		},
+		"node_modules/@vitest/coverage-v8/node_modules/tinyrainbow": {
+			"version": "2.0.0",
+			"resolved": "https://registry.npmjs.org/tinyrainbow/-/tinyrainbow-2.0.0.tgz",
+			"integrity": "sha512-op4nsTR47R6p0vMUUoYl/a+ljLFVtlfaXkLQmqfLR1qHma1h/ysYk4hEXZ880bf2CYgTskvTa/e196Vd5dDQXw==",
+			"dev": true,
+			"license": "MIT",
+			"engines": {
+				"node": ">=14.0.0"
+			}
+		},
 		"node_modules/@vitest/expect": {
 			"version": "2.0.5",
 			"resolved": "https://registry.npmjs.org/@vitest/expect/-/expect-2.0.5.tgz",
@@ -6288,6 +6392,13 @@
 				"node": ">= 0.4"
 			}
 		},
+		"node_modules/html-escaper": {
+			"version": "2.0.2",
+			"resolved": "https://registry.npmjs.org/html-escaper/-/html-escaper-2.0.2.tgz",
+			"integrity": "sha512-H2iMtd0I4Mt5eYiapRdIDjp+XzelXQ0tFE4JS7YFwFevXXMmOp9myNrUvCg0D6ws8iqkRPBfKHgbwig1SmlLfg==",
+			"dev": true,
+			"license": "MIT"
+		},
 		"node_modules/htmlparser2-svelte": {
 			"version": "4.1.0",
 			"resolved": "https://registry.npmjs.org/htmlparser2-svelte/-/htmlparser2-svelte-4.1.0.tgz",
@@ -6583,6 +6694,60 @@
 			"dev": true,
 			"license": "ISC"
 		},
+		"node_modules/istanbul-lib-coverage": {
+			"version": "3.2.2",
+			"resolved": "https://registry.npmjs.org/istanbul-lib-coverage/-/istanbul-lib-coverage-3.2.2.tgz",
+			"integrity": "sha512-O8dpsF+r0WV/8MNRKfnmrtCWhuKjxrq2w+jpzBL5UZKTi2LeVWnWOmWRxFlesJONmc+wLAGvKQZEOanko0LFTg==",
+			"dev": true,
+			"license": "BSD-3-Clause",
+			"engines": {
+				"node": ">=8"
+			}
+		},
+		"node_modules/istanbul-lib-report": {
+			"version": "3.0.1",
+			"resolved": "https://registry.npmjs.org/istanbul-lib-report/-/istanbul-lib-report-3.0.1.tgz",
+			"integrity": "sha512-GCfE1mtsHGOELCU8e/Z7YWzpmybrx/+dSTfLrvY8qRmaY6zXTKWn6WQIjaAFw069icm6GVMNkgu0NzI4iPZUNw==",
+			"dev": true,
+			"license": "BSD-3-Clause",
+			"dependencies": {
+				"istanbul-lib-coverage": "^3.0.0",
+				"make-dir": "^4.0.0",
+				"supports-color": "^7.1.0"
+			},
+			"engines": {
+				"node": ">=10"
+			}
+		},
+		"node_modules/istanbul-lib-source-maps": {
+			"version": "5.0.6",
+			"resolved": "https://registry.npmjs.org/istanbul-lib-source-maps/-/istanbul-lib-source-maps-5.0.6.tgz",
+			"integrity": "sha512-yg2d+Em4KizZC5niWhQaIomgf5WlL4vOOjZ5xGCmF8SnPE/mDWWXgvRExdcpCgh9lLRRa1/fSYp2ymmbJ1pI+A==",
+			"dev": true,
+			"license": "BSD-3-Clause",
+			"dependencies": {
+				"@jridgewell/trace-mapping": "^0.3.23",
+				"debug": "^4.1.1",
+				"istanbul-lib-coverage": "^3.0.0"
+			},
+			"engines": {
+				"node": ">=10"
+			}
+		},
+		"node_modules/istanbul-reports": {
+			"version": "3.1.7",
+			"resolved": "https://registry.npmjs.org/istanbul-reports/-/istanbul-reports-3.1.7.tgz",
+			"integrity": "sha512-BewmUXImeuRk2YY0PVbxgKAysvhRPUQE0h5QRM++nVWyubKGV0l8qQ5op8+B2DOmwSe63Jivj0BjkPQVf8fP5g==",
+			"dev": true,
+			"license": "BSD-3-Clause",
+			"dependencies": {
+				"html-escaper": "^2.0.0",
+				"istanbul-lib-report": "^3.0.0"
+			},
+			"engines": {
+				"node": ">=8"
+			}
+		},
 		"node_modules/jackspeak": {
 			"version": "3.4.3",
 			"resolved": "https://registry.npmjs.org/jackspeak/-/jackspeak-3.4.3.tgz",
@@ -6908,6 +7073,34 @@
 				"@jridgewell/sourcemap-codec": "^1.5.0"
 			}
 		},
+		"node_modules/magicast": {
+			"version": "0.3.5",
+			"resolved": "https://registry.npmjs.org/magicast/-/magicast-0.3.5.tgz",
+			"integrity": "sha512-L0WhttDl+2BOsybvEOLK7fW3UA0OQ0IQ2d6Zl2x/a6vVRs3bAY0ECOSHHeL5jD+SbOpOCUEi0y1DgHEn9Qn1AQ==",
+			"dev": true,
+			"license": "MIT",
+			"dependencies": {
+				"@babel/parser": "^7.25.4",
+				"@babel/types": "^7.25.4",
+				"source-map-js": "^1.2.0"
+			}
+		},
+		"node_modules/make-dir": {
+			"version": "4.0.0",
+			"resolved": "https://registry.npmjs.org/make-dir/-/make-dir-4.0.0.tgz",
+			"integrity": "sha512-hXdUTZYIVOt1Ex//jAQi+wTZZpUpwBj/0QsOzqegb3rGMMeJiSEu5xLHnYfBrRV4RH2+OCSOO95Is/7x1WJ4bw==",
+			"dev": true,
+			"license": "MIT",
+			"dependencies": {
+				"semver": "^7.5.3"
+			},
+			"engines": {
+				"node": ">=10"
+			},
+			"funding": {
+				"url": "https://github.com/sponsors/sindresorhus"
+			}
+		},
 		"node_modules/map-or-similar": {
 			"version": "1.5.0",
 			"resolved": "https://registry.npmjs.org/map-or-similar/-/map-or-similar-1.5.0.tgz",
@@ -9514,6 +9707,68 @@
 				"node": ">=8.10.0"
 			}
 		},
+		"node_modules/test-exclude": {
+			"version": "7.0.1",
+			"resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-7.0.1.tgz",
+			"integrity": "sha512-pFYqmTw68LXVjeWJMST4+borgQP2AyMNbg1BpZh9LbyhUeNkeaPF9gzfPGUAnSMV3qPYdWUwDIjjCLiSDOl7vg==",
+			"dev": true,
+			"license": "ISC",
+			"dependencies": {
+				"@istanbuljs/schema": "^0.1.2",
+				"glob": "^10.4.1",
+				"minimatch": "^9.0.4"
+			},
+			"engines": {
+				"node": ">=18"
+			}
+		},
+		"node_modules/test-exclude/node_modules/brace-expansion": {
+			"version": "2.0.1",
+			"resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-2.0.1.tgz",
+			"integrity": "sha512-XnAIvQ8eM+kC6aULx6wuQiwVsnzsi9d3WxzV3FpWTGA19F621kwdbsAcFKXgKUHZWsy+mY6iL1sHTxWEFCytDA==",
+			"dev": true,
+			"license": "MIT",
+			"dependencies": {
+				"balanced-match": "^1.0.0"
+			}
+		},
+		"node_modules/test-exclude/node_modules/glob": {
+			"version": "10.4.5",
+			"resolved": "https://registry.npmjs.org/glob/-/glob-10.4.5.tgz",
+			"integrity": "sha512-7Bv8RF0k6xjo7d4A/PxYLbUCfb6c+Vpd2/mB2yRDlew7Jb5hEXiCD9ibfO7wpk8i4sevK6DFny9h7EYbM3/sHg==",
+			"dev": true,
+			"license": "ISC",
+			"dependencies": {
+				"foreground-child": "^3.1.0",
+				"jackspeak": "^3.1.2",
+				"minimatch": "^9.0.4",
+				"minipass": "^7.1.2",
+				"package-json-from-dist": "^1.0.0",
+				"path-scurry": "^1.11.1"
+			},
+			"bin": {
+				"glob": "dist/esm/bin.mjs"
+			},
+			"funding": {
+				"url": "https://github.com/sponsors/isaacs"
+			}
+		},
+		"node_modules/test-exclude/node_modules/minimatch": {
+			"version": "9.0.5",
+			"resolved": "https://registry.npmjs.org/minimatch/-/minimatch-9.0.5.tgz",
+			"integrity": "sha512-G6T0ZX48xgozx7587koeX9Ys2NYy6Gmv//P89sEte9V9whIapMNF4idKxnW2QtCcLiTWlb/wfCabAtAFWhhBow==",
+			"dev": true,
+			"license": "ISC",
+			"dependencies": {
+				"brace-expansion": "^2.0.1"
+			},
+			"engines": {
+				"node": ">=16 || 14 >=14.17"
+			},
+			"funding": {
+				"url": "https://github.com/sponsors/isaacs"
+			}
+		},
 		"node_modules/text-table": {
 			"version": "0.2.0",
 			"resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
diff --git a/app/package.json b/app/package.json
index 0a98502..469f4d0 100644
--- a/app/package.json
+++ b/app/package.json
@@ -35,6 +35,7 @@
 		"@sveltejs/adapter-cloudflare": "^5.0.3",
 		"@sveltejs/kit": "^2.16.0",
 		"@sveltejs/vite-plugin-svelte": "^5.0.0",
+		"@vitest/coverage-v8": "^3.0.5",
 		"autoprefixer": "^10.4.20",
 		"daisyui": "^4.12.23",
 		"eslint": "^9.18.0",