chore: remove knip, husky and lint-staged

Drop the unused knip dead-code check and the husky+lint-staged pre-commit hook pipeline. All checks remain covered by the CI workflow (lint, typecheck, i18n, tests).

package.json

@@ -14,7 +14,6 @@
 		"lint": "biome check .",
 		"biome:lint": "biome check .",
 		"format": "biome format --write .",
-		"knip": "knip --include files,dependencies,devDependencies,unlisted,binaries",
 		"diag:permissions": "tsx scripts/diagnose-permission-page.ts",
 		"jobs:worker": "node --conditions=react-server --import tsx scripts/jobs-worker.ts",
 		"test": "vitest run",
@@ -31,17 +30,12 @@
 		"gamedata:compress": "node scripts/compress-gamedata.mjs",
 		"hk:matrix:check": "tsx scripts/verify-housekeeping-matrix.ts",
 		"test:housekeeping": "vitest run --coverage.enabled=false src/features/housekeeping src/lib/admin-theme-source-audit.test.ts src/lib/admin/authorization-contract.test.ts",
-		"prepare": "node scripts/prepare-hooks.mjs",
 		"assets:editor": "node scripts/copy-editor-assets.mjs",
 		"deps:audit": "pnpm audit --audit-level=high",
 		"analyze": "next experimental-analyze",
 		"i18n:check": "node scripts/audit-cms-translations.mjs --check",
 		"i18n:audit": "node scripts/audit-cms-translations.mjs"
 	},
-	"lint-staged": {
-		"*.{js,ts,jsx,tsx,json}": "biome check --write --no-errors-on-unmatched",
-		"*.{ts,tsx}": "node scripts/check-admin-colors.mjs"
-	},
 	"dependencies": {
 		"@base-ui/react": "1.8.0",
 		"@dnd-kit/core": "6.3.1",
@@ -93,9 +87,6 @@
 		"@types/react-dom": "19.2.7",
 		"@vitest/coverage-v8": "5.0.0",
 		"drizzle-kit": "0.31.10",
-		"husky": "9.1.7",
-		"knip": "6.34.0",
-		"lint-staged": "17.4.1",
 		"pino-pretty": "13.1.3",
 		"postcss": "8.5.28",
 		"tailwindcss": "4.3.3",