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phantomptrandClaude Opus 5.5
0b6901fa53
A fresh single-file upload pre-sizes its .ps5up2-tmp to the full transfer (posix_fallocate); a resume reopened it with O_APPEND, so the resumed shards were written past the pre-sized end. A 1 GiB upload that dropped and resumed grew to 1 GiB + the unsent remainder and COMMIT refused it with size_mismatch (seen on the Android emulator). Resume now opens without appending and seeks to entry->bytes_received (the journal's acknowledged byte count). direct_open.h is header-only so the new host self-test drives the same code on a real file. Hardware (Phat 5.10): 1 GiB upload, engine killed at ~300 MB, resumed with the same tx id — before: size_mismatch at 1,879,048,192 bytes; after: committed at 1,073,741,824, SHA-256 identical to the source. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>