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Neil
ed1eaf55f1
Alt-screen agent TUIs (OpenCode/OpenTUI, Codex, grok) bracket every repaint in `?2026h … ?2026l`. Hiding a pane mid-bracket — which a worktree switch or cold-park lands on routinely, since these brackets are written many times a second — leaves xterm's `decPrivateModes.synchronizedOutput` latched. RenderService.refreshRows checks that latch *before* rendering, so while it holds, every repaint Orca owns is a no-op: the forced render-pause repaint, the plain `refresh()` fallback, and the shared glyph-atlas rebuild all render zero rows while the xterm buffer is perfectly correct. Release the latch at the two reveal repaint entry points so those repaints actually paint. Also adds an OpenCode-shaped alt-screen e2e fixture and spec. The existing inline-TUI convergence spec covers the normal-buffer shape (live block glued to the bottom, history scrolling into scrollback); this covers the full-screen alternate-buffer shape, where nothing scrolls and so no row ever self-heals through the scroll path. Scope note: xterm arms a 1s watchdog that clears this latch on its own, so this closes a bounded window rather than the whole STA-2694 report. The e2e spec passes with and without the production change for that reason; the unit tests are what pin the behavior. Refs STA-2694.