Daneel cd48418a3c v15.1: fix freeze on window split, C-n/C-p cursor tracking, new window detection ...

- Re-entrance guard (accessibilityUpdating) prevents infinite recursion
  when VoiceOver callbacks trigger redisplay during notification posting
- Detect window tree change via FRAME_ROOT_WINDOW comparison; rebuild
  tree BEFORE iterating elements (prevents accessing freed windows)
- Validate window+buffer pointers before posting notifications
- Dynamic direction (Previous/Next/Discontiguous) and granularity
  (Character/Line) in SelectedTextChanged notifications based on
  actual point movement — fixes C-n/C-p not moving VoiceOver cursor
- New windows (completions, splits) detected via lastRootWindow change

2026-02-26 13:43:34 +01:00

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