flterm v0.0.2

Breaking

• Theme colors move into ColorPalette: TerminalTheme no longer
  takes background, foreground, and ansiColors directly. Build a
  ColorPalette once and pass it in, so palettes are something you
  can share, swap, or copyWith on their own.
• Cursor and selection colors can adapt to the cell under them: the
  color fields take DynamicColor? now. Use
  DynamicColor.cellForeground() / .cellBackground() to follow the
  cell, or DynamicColor.fixed(c) for the old static behavior.
• selectedText is a method: call controller.selectedText() for
  plain text, or pass a FormatterFormat to get VT or HTML for
  rich-clipboard copy.
• Bold no longer switches to the bright palette by default: expect
  slightly different bold colors; set boldIsBright: true to restore
  the old behavior.

Added

• Kitty graphics: programs that emit images (previewers, image
  viewers, some editors) render inside the widget. Cap the cache via
  TerminalConfig.kittyImageStorageLimit; zero disables.
• Transparent background: TerminalTheme.backgroundOpacity makes
  the default background translucent so the terminal can compose over
  a translucent window or other widgets. backgroundOpacityCells
  extends it to cells with their own bg color.
• More theme knobs: CursorTheme.text (glyph color under a block
  cursor), TerminalTheme.boldColor (forced bold color), and
  SelectionTheme.foreground (selected-glyph tint).
• ColorPalette.generated(): derives indices 16–255 from your base
  16 plus background and foreground so the extended palette blends
  instead of clashing with the fixed xterm cube.

Changed

• Dirty-row rendering: frames rebuild only rows that changed, so
  idle terminals cost much less CPU.