a96c3d9473
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ExportDataMounts lives in delete.go, which reads as a destructive path. IT IS NOT: its single production caller is the .fab export adapter, and nothing deletes based on its result. The delete path's own guard, ProtectedHDDPaths, is layout-agnostic by construction -- it protects BOTH <hdd>/... and <hdd>/felhom-data/... -- so deletion was never affected by the namespace-root defect. That scope note is now in the function's doc comment, because the file placement will mislead the next reader exactly as it misled the spec for this change. Separated into its own commit anyway, so a change to a function whose filename says "delete" is reviewable on its own. An empty nsRoot falls back to hddPath -- the pre-R-203 shape -- so any caller not yet updated keeps working on enrolled drives. Tests cover both drive kinds and assert the NEGATIVE: no emitted path lies outside the app's own data roots. Red-proof: leaving the site bare fails the system-drive row, emitting /mnt/sys_drive/userdata where the canonical root is /mnt/sys_drive/felhom-data/userdata.