fix: use request.getfixturevalue for odoo_env and list API for generate_email

- odoo_env fixture: use request.getfixturevalue('env') instead of
  direct env parameter injection — pytest-bdd cannot inject pytest-odoo
  fixtures by name into conftest fixtures; getfixturevalue() bypasses
  this limitation
- generate_email: use list-based API generate_email([res_id]) returning
  {res_id: {field: value}} — Odoo 17 does not accept a bare int

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

addons/itsulu_blog_publisher/tests/test_blog_post_social.py

@@ -254,10 +254,10 @@ class TestNotificationEmail(TransactionCase):
 
         # ACT — render the template synchronously to check the subject
         template = self.env.ref('itsulu_blog_publisher.email_template_blog_published')
-        rendered = template.generate_email(log.id, fields=['subject'])
+        rendered = template.generate_email([log.id], fields=['subject'])
 
         # ASSERT
-        subject = rendered.get('subject', '')
+        subject = rendered[log.id].get('subject', '')
         self.assertTrue(subject, "Rendered email subject must be non-empty")
         self.assertIn('[ITSulu Insights] Blog Post Published:', subject,
                       f"Unexpected subject: {subject}")
@@ -300,8 +300,8 @@ class TestNotificationEmail(TransactionCase):
 
         # Verify template renders all platform copy in the body
         template = self.env.ref('itsulu_blog_publisher.email_template_blog_published')
-        rendered = template.generate_email(log.id, fields=['body_html'])
-        body = rendered.get('body_html', '')
+        rendered = template.generate_email([log.id], fields=['body_html'])
+        body = rendered[log.id].get('body_html', '')
         self.assertIn('Twitter A copy', body, "Body must contain Twitter copy")
         self.assertIn('LinkedIn copy', body, "Body must contain LinkedIn copy")
 
@@ -319,8 +319,8 @@ class TestNotificationEmail(TransactionCase):
 
         # ASSERT — render the template synchronously to check the URL appears in the body
         template = self.env.ref('itsulu_blog_publisher.email_template_blog_published')
-        rendered = template.generate_email(log.id, fields=['body_html'])
-        body = rendered.get('body_html', '')
+        rendered = template.generate_email([log.id], fields=['body_html'])
+        body = rendered[log.id].get('body_html', '')
         self.assertIn('itsulu.com', body, "Body must contain itsulu.com URL")
 
     def test_notification_email_is_not_sent_for_draft_posts(self):

conftest.py

@@ -8,9 +8,9 @@ import pytest
 
 
 @pytest.fixture
-def odoo_env(env):
+def odoo_env(request):
     """Re-export pytest-odoo's env fixture for use in pytest-bdd step definitions."""
-    return env
+    return request.getfixturevalue('env')
 
 
 print(">>> conftest.py loaded", file=sys.stderr)