test: run the suite and benchmark with Bun's native test runner

Replace Vitest with bun test across the whole suite. A preload compiles
components through Angular's JIT transform with inlined templates, sets
up jsdom, TestBed and zoneless change detection, and a small shim covers
the Vitest APIs bun:test lacks. Files run isolated, real-worker specs
spawn the running Bun, and line coverage from lcov is converted to the
existing HTML and Cobertura reports. The CI benchmark replaces its heap
cap with a container memory limit. Vitest, Jest, Nx and their Vite
configuration are removed.

Refs #291

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

package.json

@@ -6,7 +6,7 @@
 		"start": "bun scripts/generate-langs.js && ng serve",
 		"build": "bun scripts/generate-langs.js && ng build",
 		"watch": "bun scripts/generate-langs.js && ng build --watch --configuration development",
-		"test": "bun scripts/generate-langs.js && ng test",
+		"test": "bun scripts/generate-langs.js && bun test --isolate",
 		"serve:ssr:vac-optimizer": "bun dist/vac-optimizer/server/server.mjs",
 		"lint": "bun scripts/generate-langs.js && eslint \"src/**/*.ts\"",
 		"lint:fix": "bun scripts/generate-langs.js && eslint \"src/**/*.ts\" --fix",
@@ -46,33 +46,25 @@
 		"tslib": "^2.8.1"
 	},
 	"devDependencies": {
-		"@analogjs/platform": "^2.7.5",
 		"@analogjs/vite-plugin-angular": "^2.7.5",
-		"@analogjs/vitest-angular": "^2.7.5",
 		"@angular/build": "22.2.2",
 		"@angular/cli": "22.2.2",
 		"@angular/compiler-cli": "22.2.1",
 		"@eslint/js": "^10.0.1",
-		"@nx/devkit": "^23.0.0",
-		"@nx/vite": "^23.0.0",
+		"@types/bun": "1.4.3",
 		"@types/express": "^5.0.6",
-		"@types/jest": "^30.0.0",
+		"@types/jsdom": "^21.1.7",
 		"@types/node": "^26.0.0",
-		"@vitest/coverage-istanbul": "^5.0.0",
-		"@vitest/coverage-v8": "^5.0.0",
-		"@vitest/ui": "^5.0.0",
 		"eslint": "^10.4.1",
 		"eslint-config-prettier": "^10.1.8",
 		"eslint-plugin-prettier": "^5.5.6",
 		"fast-check": "4.10.2",
-		"jest": "^30.4.2",
-		"jest-preset-angular": "^17.0.0",
+		"istanbul-lib-coverage": "^3.2.2",
+		"istanbul-lib-report": "^3.0.1",
+		"istanbul-reports": "^3.2.0",
 		"jsdom": "^30.0.0",
 		"prettier": "^3.8.3",
 		"typescript": "~6.0.3",
-		"typescript-eslint": "^8.60.0",
-		"vite": "^8.0.0",
-		"vite-tsconfig-paths": "^6.0.0",
-		"vitest": "^5.0.0"
+		"typescript-eslint": "^8.60.0"
 	}
 }