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Author corrections without baking them into motion

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Constant, ramp, and return offsets now append ordinary channel layers to a lane or cel in explicit owner frames. The inspector exposes the commands as one undoable transaction, shows conflicts, and offers removal or retry while preserving generated bases through regeneration.

Ordered-stack compatibility is shared by validation, conflict reporting, and regeneration, including adjacent replacement coverage. Cel-sheet gaps and headers select their lane, so commands cannot fall through to another column's stale selection.

437 tests, 5,804 assertions; both browser flows; 56 Django tests; optimized frontend build.
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Your Name 2026-09-30 22:00:48 -04:00
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24
docs/lane-model.md
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@ -2,8 +2,8 @@
Revised 2026-09-30. Target design. Cel ownership, source playback, the
content and cel commands, placement anywhere in a lane, overwrite, a one-row cel
strip, a frame-down cel sheet and the correction-layer evaluator are implemented;
the commands that produce a correction and the retiming commands are not.
strip, a frame-down cel sheet, correction evaluation, and correction authoring
for rotation and position are implemented. Retiming commands are not.
See the status note under
[Proof obligations](#proof-obligations-and-implementation-order).
@ -536,17 +536,23 @@ retime, and deleting reused content. A lane cannot hold AUDIO cels — `lane-pro
requires visual ones, though this document says a lane may hold either and
should reject only a mixture.
What is NOT implemented is a command that produces a layer — the doc's Constant
adjustment, Ramp and Return motion — and with it the question of how a view
offers those three over a selected range, and how it offers a conflict for
resolution. Slip source and retime are also not implemented; a refusal is the
current behavior where the model demands an explicit choice nobody has made yet.
`domain/correction.cljs` now produces Constant adjustment, Ramp, and Return
motion layers for rotation and position. The inspector exposes them on a selected
lane or cel using an explicit range in that owner's frames; this deliberately
leaves displayed-range dragging through nested or retimed owners for later. One
Apply is one undo step. Conflicted layers are listed, can be removed, and can be
retried when the complete ordered stack is compatible again. Validation,
conflict reporting, and regeneration share that ordered-stack rule, including
coverage by adjacent replacement layers. Slip source and retime are still not
implemented; a refusal is the current behavior where the model demands an
explicit choice nobody has made yet.
The cel sheet is the same projected cels and selection addresses with its axes
turned: frames down and lanes across, so commands selected there and in the
timeline have identical targets. The suite stands at 429 tests and 5,767
timeline have identical targets; a gap selects its column's lane rather than
retaining a stale selection from another column. The suite stands at 437 tests and 5,804
assertions, with `frontend/test/browser/lane.mjs` driving the editor through
create, hold, overflow, undo, reuse, make unique, duplicate, split, insert,
trim, move and blank. Rewrite tests that encode superseded
trim, move, blank, correction authoring, and two-lane sheet targeting. Rewrite tests that encode superseded
behavior rather than preserving behavior to keep them green.
Build small adversarial documents and test their domain operations before