chore: archive bug 397, create story 399, fix platform-specific npm deps

- Archive completed bug 397
- Create story 399 (CLI port flag)
- Remove @biomejs/cli-darwin-arm64 and @rollup/rollup-darwin-arm64
  from package.json (breaks Docker builds on Linux)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/package.json

@@ -25,9 +25,7 @@
 	},
 	"devDependencies": {
 		"@biomejs/biome": "^2.4.2",
-		"@biomejs/cli-darwin-arm64": "^2.4.9",
 		"@playwright/test": "^1.47.2",
-		"@rollup/rollup-darwin-arm64": "^4.60.0",
 		"@testing-library/jest-dom": "^6.0.0",
 		"@testing-library/react": "^16.0.0",
 		"@testing-library/user-event": "^14.4.3",