Translation writes a raw generation, packing writes a second through the classifier's candidate-only drop set, verification reopens both, and only the packed one is published. Stages are one-way and publish rejects every earlier state.

Measured end to end on the wapp mirror at k=5: a fresh import publishes 7.0 MB where the unpacked baseline was 63 MB. zit verify on the result reports 944 artifacts and 0 faults, a second pack is a no-op, and a second import into the same destination refuses with DEST byte-identical.

The catastrophic mode this task introduces -- the 66 MB raw generation riding the whole-directory rename into DEST -- was guarded only by statement order, since .verified is both the pre- and post-discard stage. Two guards now: publish refuses while a raw generation is present, and a staging manifest requires exactly {.zit, .zit-checkout, .zit-import-map.jsonl, refs} immediately before the sync.

Also fixes a use-after-free introduced with the S-tree hints: the partition-key map borrowed an S card's filename, which every frame below the root frees on return. The key is owned now, pinned by a pack-level test that segfaults without it.

test 3471/3471, gate, e2e 716/716, git-import-e2e 11/11, git-import-cli 234/234, dst 6x1000. check-in: 8530aa1440 user: dmestas tags: sub-manifest