fix: also rename multilingual glossaries from 'Anglais' to 'Multilingue' in migration

The migration already sets target_language='multi' but the glossary name
in the DB still said 'Français → Anglais'. Now it renames them to
'Français → Multilingue' so users aren't confused when translating to
Persian, Arabic, etc.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

alembic/versions/b7c8d9e0f1a2_set_multilingual_target_language.py

@@ -44,6 +44,14 @@ def upgrade() -> None:
         )
     """)
 
+    # Also rename glossaries: replace "Anglais" with "Multilingue" in the name
+    op.execute("""
+        UPDATE glossaries
+        SET name = REPLACE(name, 'Anglais', 'Multilingue')
+        WHERE target_language = 'multi'
+          AND name LIKE '%%Anglais%%'
+    """)
+
 
 def downgrade() -> None:
     # Revert multilingual glossaries back to 'en'