test(session): name the wrapper pass-through assertion precisely

This case calls only liftToolResult; the native validator has separate coverage. Name the behavior actually asserted so the test title does not claim both paths are covered by one assertion. Assertions and production behavior are unchanged.

packages/session/session-format-v3-to-v4/tests/tool-role.spec.ts

@@ -157,7 +157,7 @@ describe('V4 tool-role view and lift', () => {
     expect(() => liftToolResult(row)).toThrow(/tool-result isError must be boolean/)
   })
 
-  it('passes non-tool rows through both transforms', () => {
+  it('passes non-tool rows through the wrapper conversion', () => {
     const row = event(0, 'user/message', { content: [], source: { kind: 'user' }, role: 'user', id: 'u' })
     expect(liftToolResult(row)).toBe(row)
   })