Hardens ZIP processing:
- Compares PS5IMAGE and JSON geometry after all entries, eliminating ZIP-order dependence.
- Accepts empty deflate entries and ignores them during save-folder flattening.
- Bounds inflated output during decompression and adds native ZIP boundary tests.
Validated on PS5 with both conflicting orders, valid reordered metadata, empty deflate, legacy saves, 0x0404 fields, and SFO geometry recovery.