Add Claude context window selection support - #1422

Bugbot Analysis Progress (6m 40s elapsed)

✅ Gathered PR context (2s)
✅ Completed bug detection (6m 30s)
✅ Posted analysis results (9s)

Final Result: Bugbot completed review - no new issues found. 1 previously reported issue remain unresolved.

Request ID: serverGenReqId_8541cbd2-6fd4-4c15-8cf4-ed51dabb95a0