resizes the col widths on app resize

test/app-interactions.test.tsx

@@ -65,25 +65,19 @@ describe('Pass on to Agent', () => {
 })
 
 describe('Stage + commit', () => {
-  it('stages a file, commits with a message, and toasts', async () => {
+  it('stages a file and commits via Shift+Enter (no commit button)', async () => {
     const c = renderApp()
     const row = await waitFor(() => {
       const r = find(c, '.git-row', 'UserController.php')
       if (!r) throw new Error('git not ready')
       return r
     })
-    const stageBtn = row.querySelector<HTMLButtonElement>('button[title="Stage changes"]')!
-    fireEvent.click(stageBtn)
-
-    // commit button reflects the staged count once a file is staged
-    await waitFor(() => expect(find(c, '.commit-btn', 'Commit')?.textContent).toMatch(/Commit\s*\d/))
-
+    fireEvent.click(row.querySelector<HTMLButtonElement>('button[title="Stage changes"]')!)
+    // the commit button is intentionally gone — committing is keyboard-only
+    expect(c.querySelector('.commit-btn')).toBeNull()
     const msg = c.querySelector<HTMLTextAreaElement>('.commit-input')!
     fireEvent.change(msg, { target: { value: 'wire up balance' } })
-    const commitBtn = find(c, '.commit-btn', 'Commit') as HTMLButtonElement
-    expect(commitBtn.disabled).toBe(false)
-    fireEvent.click(commitBtn)
-
+    fireEvent.keyDown(msg, { key: 'Enter', shiftKey: true })
     await waitFor(() => expect(find(c, '.toast', 'Committed')).toBeTruthy())
   })
 })