refactor(core): remove shell description input (#32823)

packages/tui/test/cli/tui/__snapshots__/inline-tool-wrap-snapshot.test.tsx.snap

@@ -27,8 +27,6 @@ exports[`TUI inline tool wrapping snapshots expanded tool errors under the tool
 exports[`TUI inline tool wrapping keeps separation after a shell output block 1`] = `
 "
 
-  # List files
-
   $ ls
 
   file.ts

packages/tui/test/cli/tui/inline-tool-wrap-snapshot.test.tsx

@@ -62,7 +62,6 @@ function ShellOutput() {
       paddingLeft={2}
       gap={1}
     >
-      <text paddingLeft={3}># List files</text>
       <box gap={1}>
         <text>$ ls</text>
         <text>file.ts</text>