VoiceTerm v1.2.8

Fixed

• HUD repaints no longer override the scroll region the wrapped CLI declared.
  Codex pins its composer by setting a small scroll region around its history
  scrolls; VoiceTerm's bar repaint reset the region to the whole child viewport,
  so Codex's next scroll moved the entire viewport and wiped or displaced its own
  UI until a resize made it redraw. The writer now tracks the child's declared
  region (including declarations split across output chunks) and restores it,
  clamped to the child viewport, after every repaint. When the child declares
  none or resets it, VoiceTerm confines scrolling to the child viewport as
  before. JetBrains terminals, where VoiceTerm sets no scroll region, are
  unchanged.
• Covered by writer tests that capture the exact bytes a repaint emits, plus a
  tracker test suite for split, reset, private-mode, and invalid declarations.