For a ~1000x perf gain says ol' claudy, our boi who wrote this entire
patch! Bo
Introduce `GapAnnotations` in `.ui._annotate` for batch-rendering gap
rects/arrows instead of individual `QGraphicsItem` instances. Uses
upstream's `pyqtgraph.Qt.internals.PrimitiveArray` for rects and
a `QPainterPath` for arrows. This API-replicates our prior annotator's
in view shape-graphics but now using (what we're dubbing)
"single-array-multiple-graphics" tech much like our `.ui._curve`
extensions to `pg` B)
Impl deats,
- batch draw ~1000 gaps in single paint call vs 1000 items
- arrows render in scene coords to maintain pixel size on zoom
- add vectorized timestamp-to-index lookup for repositioning
- cache bounding rect, rebuild on `reposition()` calls
- match `SelectRect` + `ArrowItem` visual style/colors
- skip reposition when timeframe doesn't match gap's period
Other,
- fix typo in `LevelMarker` docstring: "graphich" -> "graphic"
- reflow docstring in `qgo_draw_markers()` to 67 char limit
(this patch was generated in some part by [`claude-code`][claude-code-gh])
[claude-code-gh]: https://github.com/anthropics/claude-code
Gud Boi
95b097e0f0