- Remove clawhdf5-types (empty 1-line stub crate; type defs already live in
clawhdf5-format). Update workspace Cargo.toml and CLAUDE.md accordingly.
- Implement HDF5 superblock v4 (page-buffer mode) read and write support in
clawhdf5-format: Superblock::parse_v4, page_size field, v4 serialize
branch, and FileWriter::with_page_size. This was the one task left
unimplemented from docs/superpowers/plans/2026-06-29-format-write-extensions.md.
- Reconcile the three docs/superpowers/plans/*.md docs (filter codecs,
format write extensions, MPI-IO VOL) against actual shipped code: they
were pre-work plans for d6c4d4f (2026-06-30) committed to git late on
2026-08-03 with all checkboxes still unchecked. Mark completed tasks done
and add a status note so they read as historical records, not open work.
- Refresh ROADMAP.md's "What's Next" section against current repo state.
Co-Authored-By: Claude Sonnet 5 <[email protected]>
