chore: ignore local-only files

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Author: 23Kev

.gitignore

@@ -128,3 +128,5 @@ site/node_modules/
 docs/dashboard.json
 ka-local/register-task.ps1
 ka-local/update-and-launch.ps1
+ka-local/iracing-api.ts
+docs/GANTRY_LAP_GRAPH_PLAN.md