fix(native-chat): give a rollout-transcript shell row the terminal glyph

`exec` and `local_shell` are what the Codex rollout transcript names a
shell call — `native-chat-edit-normalize` already treats those three
words as the command tools — but the activity set the glyph vocabulary
reuses carries neither, so both rows headed a real command with the
generic-tool wrench.

Named in the vocabulary rather than in that activity set, because that
set also picks the running row's copy and this is only about the glyph.

src/shared/native-chat-tool-icon.test.ts

@@ -104,8 +104,13 @@ describe('native chat tool icons', () => {
   })
 
   it('keeps the terminal glyph for a row that really ran a command', () => {
-    for (const name of ['shell', 'bash', 'run_terminal_cmd']) {
+    // `exec` and `local_shell` are how the Codex rollout transcript names a
+    // shell call; `native-chat-edit-normalize` already calls the three command
+    // tools by those words, so a wrench on one would deny a command that ran.
+    for (const name of ['shell', 'bash', 'run_terminal_cmd', 'exec', 'local_shell']) {
+      expect(nativeChatToolCategory(name)).toBe('unknown')
       expect(nativeChatToolIconName(name)).toBe('square-terminal')
+      expect(isShellActivityToolRow(name)).toBe(true)
     }
   })
 

src/shared/native-chat-tool-icon.ts

@@ -65,6 +65,11 @@ const CATEGORY_BY_ROW_WORD = new Map<string, NativeChatToolCategory>([
   ['read', 'read'],
   ['search', 'search'],
   ['list', 'listFiles'],
+  // Codex's rollout-transcript names for a shell call, which the activity set
+  // below does not carry: `isCommandToolName` also picks the running row's copy,
+  // and this vocabulary only picks a glyph.
+  ['exec', 'unknown'],
+  ['local_shell', 'unknown'],
   // Every Codex file change projects as a `Diff` call, and the edit set below
   // names the tools that carry the edit in their input, not that projection.
   ['diff', 'fileChange'],