iroh transport P2: cmux-iroh FFI packaging (crate + xcframework + CI toolchain) - #7813

Bugbot Analysis Progress (1m 41s elapsed)

✅ Gathered PR context (6s)
✅ Completed bug detection (1m 33s)
✅ Posted analysis results (2s)

Final Result: Bugbot completed review - no new issues found. 2 previously reported issues remain unresolved.

Request ID: serverGenReqId_215cd6f5-1221-4ff7-856a-f3dff751f28d