- Engage's two DLC NSPs (…F001, …F002, 121 KB each) hold one empty marker file each (e0, h0); the content itself is already in update 2.0.0 (Fell Xenologue maps fld_e001–e006, the DLC Emblem room, Patch0–3). The host used to report no DLC and had no MountAddOnContent
- Host: aoc::CountAddOnContent / ListAddOnContent report the numbered folders under DM_AOC_DIR (index = title ID − base − 0x1000; hle_misc.c); fs::MountAddOnContent / QueryMountAddOnContentCacheSize mount DM_AOC_DIR/<index> read-only, a missing index answers fs 2-1002 (hle_fs.c). D2R keeps its fixed {1} without DM_AOC_DIR; DM_AOC_OWNED=0 still reports none
- Packing: nx_extract --aoc <dlc.nsp> <dir> writes a DLC's data NCA RomFS; build_ipa_from_nsp.py extracts every DLC NSP to <id>_build/aoc/<index>/ instead of skipping them; build_ipa.sh copies AOC (default $W/data/aoc) to <App>/aoc; the iOS app sets DM_AOC_DIR when it exists
- Verified on the Mac: Engage mounts e0 / h0 and DLCManager.RefreshHasList marks both contents owned (probe main+0x29f3c88: 2 of 2 with the folders, 0 without); nx_extract --aoc matches hactool; the script step tested on the user's NSP folder
- README games row and a bring-up catalogue entry
seedds
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