The control derives Cols/Rows from arranged-size / character-cell-size; without an
explicit monospace font (as the working spike set) the cell metrics are off and the
terminal miscomputes its size, so the child TUI renders into the wrong area. Match
the spike's font/BufferSize and stretch to fill the pane.
The custom Porta.Pty bypass (own read loop, key tunneling, resize sync) rendered
wrong, lagged, and dropped input. The spike proved TerminalControl.LaunchProcess()
renders correctly and stays responsive, so hand pty/input/render/resize/focus back
to the library. PtyTerminalSession shrinks to a thin wrapper: apply descriptor.Env
process-wide (Porta.Pty inherits the process env; no per-launch env seam), set
Process/Args/StartingDirectory, LaunchProcess(). Process="" still suppresses the
control's auto-launch so exactly one process starts.
Adds a self-contained terminal host: PtyTerminalSession drives a Porta.Pty child
directly (custom env) and pumps it through Iciclecreek's XTerm.NET renderer via
TerminalControl.Terminal, bypassing LaunchProcess() so a fully-populated
environment can be passed. InteractiveTerminalView/ViewModel host it with an
order-independent attach/start. Adds Iciclecreek.Avalonia.Terminal 2.0.3.
Sets Process="" to suppress the control's auto-launch of a stray shell.
mika kuns