perf(core,viewer): stop rebuilding wall geometry every frame - #556

Bugbot Analysis Progress (18m 50s elapsed)

✅ Gathered PR context (9s)
✅ Completed bug detection (18m 35s)
✅ Posted analysis results (5s)

Final Result: Bugbot completed review - no new issues found! ✅

Request ID: serverGenReqId_454f0317-f419-4ad7-93ab-49ce7550a544