refactor: Replace Rollup with Vite (#2656)

This is a high risk change: every byte the card ships is emitted by a
different bundler, minified by a different minifier, and every
stylesheet is compiled by a different sass. The intent is that the
card's behaviour is unchanged.

**Significant development win**: Build time drops from 24s to 1.1s 🎉 

Also adds a test suite ('dist') that runs against the built bundle.

package.json

@@ -55,13 +55,6 @@
     "@eslint/eslintrc": "^3.3.6",
     "@eslint/js": "^9.24.0",
     "@ianvs/prettier-plugin-sort-imports": "^4.7.1",
-    "@rollup/plugin-commonjs": "^26.0.1",
-    "@rollup/plugin-image": "^3.0.3",
-    "@rollup/plugin-json": "^6.1.0",
-    "@rollup/plugin-node-resolve": "^15.2.3",
-    "@rollup/plugin-replace": "^5.0.7",
-    "@rollup/plugin-terser": "^0.4.4",
-    "@rollup/plugin-typescript": "^11.1.6",
     "@semantic-release/github": "^10.3.3",
     "@types/js-yaml": "^4",
     "@types/lodash-es": "^4.17.12",
@@ -80,15 +73,13 @@
     "msw": "^2.15.0",
     "playwright": "1.62.0",
     "prettier": "^3.3.2",
-    "rollup": "^3.29.4",
-    "rollup-plugin-serve": "^1.1.1",
-    "rollup-plugin-styler": "^1.8.0",
     "rollup-plugin-visualizer": "^5.12.0",
-    "sass": "patch:sass@npm%3A1.77.4#~/.yarn/patches/sass-npm-1.77.4-13b6910aea.patch",
+    "sass-embedded": "^1.100.0",
     "semantic-release": "^24.1.1",
     "semantic-release-export-data": "^1.1.0",
     "type-fest": "^4.41.0",
     "typescript": "^5.8.3",
+    "vite": "^8.1.5",
     "vitest": "^4.1.10",
     "vitest-mock-extended": "^5.1.0"
   },
@@ -177,9 +168,10 @@
     ]
   },
   "scripts": {
-    "start": "rollup -c --watch",
+    "start": "vite build --watch --mode development",
+    "preview": "vite preview",
     "deployment-update": "./scripts/deployment-update-symlink.sh",
-    "build": "yarn run lint && yarn run rollup",
+    "build": "vite build",
     "docs": "docsify serve ./docs",
     "docs-check-links": "docker run --init --rm -v \"$(pwd):/input\" -w /input lycheeverse/lychee --config lychee.toml \"./docs/\"",
     "docs-update-images": "./scripts/docs-update-images.sh",
@@ -189,7 +181,6 @@
     "typecheck": "tsc --noEmit -p tsconfig.json",
     "format": "prettier --write .",
     "format-check": "prettier --check .",
-    "rollup": "rollup -c",
     "prune": "knip",
     "test": "vitest run",
     "test:browser": "vitest run --config vitest.browser.config.ts",