* Update project description

- Removed mention of "derivative" as this is implied.
- Similarly mention of longitudinal is not strictly necessary.

* Remove structural modules

* Add functional module

* Update project description

- Removed mention of "derivative" as this is implied.
- Similarly mention of longitudinal is not strictly necessary.

* Remove structural modules

* Add functional module

- Resolve merge conflicts (keep orchestration layer, discard old inline logic)
- Fix docstring paths in generate_bids_tools.py (#1)
- Remove redundant extension=Extension.NII_GZ in longitudinal export (#5)
- Clarify verbose docstring in RunnerConfig (#6)

Tissue masks (csf/gm/wm) were being warped into longitudinal template
space even though nothing downstream consumes them there; per Jason's
handover note #5 this is wasted work. Removes the fields from
`AnatomicalLongOutputs`, the `_xfm()` calls in `longitudinal_process`,
and the matching resolve/export entries under `space-longitudinal`.

Adds a unit test asserting the tissue masks are not produced, and trims
the three obsolete rows from `docs/data_dictionary.md`.

…314)

* Drop tissue-mask transforms from longitudinal anat (Stage 4 of #301)

Tissue masks (csf/gm/wm) were being warped into longitudinal template
space even though nothing downstream consumes them there; per Jason's
handover note #5 this is wasted work. Removes the fields from
`AnatomicalLongOutputs`, the `_xfm()` calls in `longitudinal_process`,
and the matching resolve/export entries under `space-longitudinal`.

Adds a unit test asserting the tissue masks are not produced, and trims
the three obsolete rows from `docs/data_dictionary.md`.

* Tighten Stage 4 tests (PR review fixups)

- Flag the xfm filename quirk (space-longitudinal + from-/to- is
  redundant) with a comment pointing at handover note #18, so the
  hard-coded expected names are not mistaken for a spec.
- Replace the Mock-based longitudinal anat outputs in the orchestration
  tests with a real AnatomicalLongOutputs NamedTuple so attribute typos
  fail loudly instead of silently returning a new Mock.
- Add resolve_longitudinal_anat unit tests covering the happy path,
  brain_mask optionality, and bids_safe_label round-trip for session
  labels with non-alphanumerics.

Renames tests/data/cpac_rbc_divergences.md to docs/cpac_comparison.md
and splits findings into Bugs (#4, #5) and Divergences (#1, #2, #3, #6)
to distinguish unambiguous numerical errors from defensible design
choices. Adds a new divergence about CPAC's duplicate motion correction.