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fix(tui): Container change detection for proper differential rendering

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Fixed rendering artifact where duplicate bottom borders appeared when components
dynamically shifted positions (e.g., Ctrl+C in agent clearing status container).

Root cause: Container wasn't reporting as "changed" when cleared (0 children),
causing differential renderer to skip re-rendering that area.

Solution: Container now tracks previousChildCount and reports changed when
child count changes, ensuring proper re-rendering when containers are cleared.

- Added comprehensive test reproducing the layout shift artifact
- Fixed Container to track and report child count changes
- All tests pass including new layout shift artifact test
This commit is contained in:
Mario Zechner 2025-08-11 02:31:49 +02:00
parent 2ec8a27222
commit 192d8d2600
24 changed files with 356 additions and 2910 deletions
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2
packages/tui/src/index.ts
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@ -19,8 +19,6 @@ export { TextComponent } from "./components/text-component.js";
export { TextEditor, type TextEditorConfig } from "./components/text-editor.js";
// Whitespace component
export { WhitespaceComponent } from "./components/whitespace-component.js";
// Logger for debugging
export { type LoggerConfig, logger } from "./logger.js";
// Terminal interface and implementations
export { ProcessTerminal, type Terminal } from "./terminal.js";
export {