Chunker Module

src/chunker.rs — Streaming chunk creation and reconstruction.

Implementation: Chunker — File Splitting IMPL-CHUNKER-001

status: implemented tags: chunker, pack, streaming release: v1.0 realizes: FR-TRANSFER-001

Streams source files and directories into fixed-size chunk_XXX.tar archives. Uses an 8 KiB read buffer to keep memory well under the 100 MB budget.

Implementation: Chunker — Stream to USB IMPL-CHUNKER-002

status: implemented tags: chunker, streaming release: v1.0 realizes: FR-TRANSFER-005

Data is written directly to the destination (USB) path without intermediate temp files — a streaming architecture.

Implementation: Chunker — Reconstruction IMPL-CHUNKER-003

status: implemented tags: chunker, unpack, streaming release: v1.0 realizes: FR-TRANSFER-009

untar_chunks extracts files from a series of tar chunks back into the original directory structure.

Implementation: Chunker — Place Files in Destination IMPL-CHUNKER-004

status: implemented tags: chunker, unpack release: v1.0 realizes: FR-TRANSFER-011

Reconstructed files are placed in the user-specified destination directory, recreating the original directory hierarchy.

Implementation: Chunker — Resume Pack IMPL-CHUNKER-005

status: implemented tags: chunker, resume release: v1.0 realizes: FR-TRANSFER-026

pack_to_chunks_with_callback accepts a resume_from index in its PackConfig. Chunks before that index are simulated (sizes tracked but not written), enabling efficient resume without re-processing.