refactor(tui): remove cli-highlight dependency

Remove direct cli-highlight usage from the TUI renderer and drop the now-unused root ownership record.

package.json

@@ -1594,7 +1594,6 @@
     "ajv": "^8.18.0",
     "chalk": "^5.6.2",
     "chokidar": "^5.0.0",
-    "cli-highlight": "^2.1.11",
     "commander": "^14.0.3",
     "croner": "^10.0.1",
     "dotenv": "^17.4.2",