- de-Qt all 11 sources: markers/workarea lose QObject/signals (list
re-sort via direct resort() call, drawing moves to the app layer),
explicit unique_ptr ownership for marker lists and viewer's
workarea/markers
- timeline undo command families (split/pointer/ripple/general/track)
now hold oaknode C handles and do all graph work through the oaknode
C ABI (no adapter layer); gaps are attached to the project graph
before insertion, orphan handles tracked and freed
- fix the de-Qt severed Block->Track length-changed chain with a
direct block_length_changed() call (positions were stale after
split/trim)
- expand oaknode C API by ~20 functions needed by timeline
(copy_in_graph, block kind/casts, connect_element, input arrays,
tracklist family, marker/workarea borrowed outlets)
- pure C ABI in include/timeline (marker/workarea/edit, command
factories returning OakUndoCommand), oakcommon XML get_native
accessors
- oaknode<->oaktimeline resolve each other at runtime; standalone
drivers link both into test binaries
- tests: oaktimeline 117, regressions oakcommon 193 / oaknode 96 /
oakrender 42 / oakcodec 18 / oakaudio 36 all green