fix(cli): preserve two-space gaps in mosaic icon tiles

Extract gap string to const to prevent prettier from collapsing
the double-space literals between icon tiles.

packages/cli/src/tui/components/top-bar.tsx

@@ -31,22 +31,24 @@ function formatContextWindow(n: number): string {
  *   ··      pink  ··
  *   amber   ··    teal
  */
+// Two-space gap between tiles (extracted to avoid prettier collapse)
+const GAP = '  ';
+
 function MosaicIcon() {
   return (
     <Box flexDirection="column" marginRight={2}>
       <Text>
         <Text color="#2f80ff">██</Text>
-        <Text> </Text>
+        <Text>{GAP}</Text>
         <Text color="#8b5cf6">██</Text>
       </Text>
       <Text>
-        <Text> </Text>
+        <Text>{GAP}</Text>
         <Text color="#ec4899">██</Text>
-        <Text> </Text>
       </Text>
       <Text>
         <Text color="#f59e0b">██</Text>
-        <Text> </Text>
+        <Text>{GAP}</Text>
         <Text color="#14b8a6">██</Text>
       </Text>
     </Box>