Use the active DiffState, native FilePicker and existing diff input,
layout, focus, source navigation and scrolling paths for Resolution.
Delete separate resolver filtering, file-list rendering and scroll APIs.
Keep projections, source choices, History and guarded jj saves distinct.
Verify native parity for picker remaps, current-file selection, excerpt
initialization, folded search, wheel focus, layouts, buffer transitions
and per-file viewports. All 932 tests pass; actual terminal smoke covers
Space-e explorer, Down/Enter file selection and guarded confirmed save.
Clippy completes with existing warnings only.
Size exception: 1197 implementation added/deleted lines excluding tests
and docs; input routing, native buffer lifecycle and rendering are kept
as one coherent cutover, without a parallel legacy resolver path.
Replace the marker-filled three-pane resolver with a marker-free native
Draft versus frozen Alternative projected from current working text.
Preserve preexisting outside edits, native undo, dirty-save guards, all
sides/bases, and draft caret/viewports across separate History views.
Reuse DiffState alignment/highlighting/excerpts for Resolution and merge
its base-aligned rows for readonly three-way History. Hide explorer and
source-selector chrome by default.
Verified 926 tests plus actual terminal projection, History highlighting,
hunk choice, optional explorer, and guarded jj-confirmed save workflows.
Clippy completes with pre-existing warnings only. Smoke fixtures stay
unresolved in this ancestry; remove that ancestry before publication.
Size exception: approximately 1650 implementation added/deleted lines,
excluding tests/docs, kept coherent because native draft lifecycle and
aligned rendering must change together without parallel legacy modes.