When switching terminal sessions in fullscreen mode, the viewport
shrank cumulatively because .terminal-wrapper uses
grid-template-rows: auto 1fr. With showControls=false, the single
child (.terminal-container) landed in the auto track instead of 1fr,
creating a feedback loop with xterm fit().
- Add .terminal-wrapper.no-controls with grid-template-rows: 1fr
so the container fills the wrapper when the header is hidden.
- Apply no-controls class in TerminalComponent when showControls=false.
- Replace setTimeout(50) with double requestAnimationFrame in
TerminalPage for more reliable fit() timing after tab switches.
Quality gates: tsc --noEmit (clean), pytest (208 passed, 6 pre-existing)
Alex Blank
f728011b2a