Add preview pane feature to display full commands in TUI #331
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Summary
This PR adds an optional preview pane feature that displays the full command of the currently selected history entry, solving the issue where long commands are truncated in the table view.
Features
Ctrl+Okeybindingshow-preview-pane)hishtory config-set/config-get show-preview-paneImplementation
ShowPreviewPanefield toClientConfigTogglePreviewPanekeybinding (Ctrl+O by default)renderPreviewPane()andwrapText()helper functionsTesting
testTui_previewPaneOriginal PR: #328 by @danielsanchezaran