🎨 Palette: Prevent sidebar layout overflow for long text and lists

[google-labs-jules]

💡 What: Added truncation (wrap="truncate") and dynamic display limits (maxVisible = 5) for the changed files and mission tasks in the CLI sidebar.
🎯 Why: To prevent the terminal layout from overflowing or breaking when encountering long lists of tasks/files or exceptionally long strings, improving general UX and situational awareness by displaying the count of hidden items.
📸 Before/After: N/A (CLI change)
♿ Accessibility: Ensures text properly wraps and provides explicit textual feedback when lists exceed terminal display heights.

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PR created automatically by Jules for task 11678623828648037702 started by @YoungSx

[google-labs-jules]

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