fix(examples): wait for reCAPTCHA score to render before screenshot (#374)

networkidle raced the async scoring and the dead button-click never ran.
Wait on the rendered result instead. Verified 4/4 in Docker.

examples/recaptcha_score.py

@@ -5,7 +5,7 @@ Expected: 0.9 (human-level) with cloakbrowser.
 Default Playwright typically scores 0.1-0.3.
 """
 
-import time
+import re
 
 from cloakbrowser import launch
 
@@ -13,19 +13,20 @@ print("Launching stealth browser...", flush=True)
 browser = launch(headless=True)
 page = browser.new_page()
 
-# Google's official reCAPTCHA v3 demo
+# Google's official reCAPTCHA v3 demo — scores automatically on page load.
 page.goto("https://recaptcha-demo.appspot.com/recaptcha-v3-request-scores.php")
-page.wait_for_load_state("networkidle")
 
-# Click to trigger reCAPTCHA scoring
-button = page.query_selector("button")
-if button:
-    button.click()
-    time.sleep(3)
+# The score renders only after an async token + backend-verify round-trip,
+# which can finish *after* "networkidle". Wait for the actual result text
+# instead of a proxy signal, or the screenshot races the scoring.
+page.wait_for_function(
+    "() => document.body.innerText.includes('Received response from our backend')",
+    timeout=20000,
+)
 
-# Extract score from page
-content = page.content()
-print("Page loaded. Check the score in the response.")
+# Extract score from the rendered response
+match = re.search(r'"score":\s*([0-9.]+)', page.inner_text("body"))
+print(f"reCAPTCHA v3 score: {match.group(1) if match else 'not found'}")
 print(f"URL: {page.url}")
 
 # Take screenshot as proof