fix(tui): clean up stream row density — drop ID, fix newline leak, align margins

ID cluttered rows and caused wrapping on long entries. Body newlines
leaked into stream rendering extra unindented lines. Cursor glyph
shifted selected rows 1 col right of unselected.

Remove ID from all row renderers (detail pane already shows it),
collapse multiline body to first line, cap tags to 2 in stream,
and reserve cursor column on unselected rows for consistent alignment.

internal/tui/styles.go

@@ -17,7 +17,7 @@ var (
 			PaddingLeft(1)
 
 	listItemStyle = lipgloss.NewStyle().
-			PaddingLeft(2)
+			PaddingLeft(4)
 
 	selectedItemStyle = lipgloss.NewStyle().
 				PaddingLeft(1).