feat: v2.9.6 — free-first NUX, cookie extraction, quality scoring

Setup wizard with consent-first cookie extraction (Chrome/Firefox/Safari),
yt-dlp auto-install, ScrapeCreators push, quality scoring (5 core sources),
status banner redesign, honest Reddit labeling, inline YouTube transcripts,
Exa free web search, Reddit public fallback, and post-research quality nudge.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tests/test_env_project.py

@@ -223,7 +223,9 @@ class TestXSourceSelection(unittest.TestCase):
             'can_install': False,
         }
 
-        with patch('lib.bird_x.get_bird_status', return_value=bird_status):
+        with patch('lib.bird_x.get_bird_status', return_value=bird_status), \
+             patch('lib.bird_x.is_bird_installed', return_value=True), \
+             patch('lib.bird_x.is_bird_authenticated', return_value=None):
             status = env.get_x_source_status(config)
 
         self.assertIsNone(status['source'])