Declare the synthetic 4 KiB Mach-O slice alignment accurately while preserving the IDA thinning scenario. Share web cleanup aggregation and process-trace fixture facts instead of duplicating them across consumers and tests; keep the 3% duplication threshold unchanged.
Validation: npm run check:ci, test discovery, and 42 focused IDA, process-trace, web workflow and cleanup boundary tests. Duplication falls from 3.01% to 2.99%.