test(web): follow hero headline nesting and Tool definitions copy in e2e

apps/web/tests/built-boot.expected.e2e.ts

@@ -112,7 +112,7 @@ it('boots the built plugin graph and renders a fixture session end to end', asyn
   fireEvent.click(contextTrigger)
   const contextPanel = await screen.findByRole('dialog', { name: 'of context used' })
   within(contextPanel).getByText('System prompt')
-  within(contextPanel).getByText('Tools')
+  within(contextPanel).getByText('Tool definitions')
   within(contextPanel).getByText('Messages')
 
   // The write/edit turns render a real diff card through the assembled graph

apps/web/tests/startup-auto-selection.e2e.ts

@@ -42,7 +42,9 @@ describe('web e2e: startup auto-selection', () => {
     onTestFailed(() => saveFailureShot(page, 'web-e2e-first-workspace-stable-tree'))
     await page.locator(`${ROOT_PHASE}[data-phase="hero"]`).waitFor({ timeout: 15_000 })
     const headline = page.getByText('Into the Unknown', { exact: true })
-    const fishHitbox = headline.locator('xpath=preceding-sibling::span[1]')
+    // The headline text sits in its own span inside the title group; the fish
+    // hitbox precedes the group, not the text span.
+    const fishHitbox = headline.locator('xpath=../preceding-sibling::span[1]')
     const fish = fishHitbox.locator('svg')
     expect(await fish.evaluate(node => getComputedStyle(node).color))
       .toBe(await headline.evaluate(node => getComputedStyle(node).color))