diff --git a/.claude/settings.local.json b/.claude/settings.local.json
index b50544d..dc4fa3e 100644
--- a/.claude/settings.local.json
+++ b/.claude/settings.local.json
@@ -30,7 +30,10 @@
       "Bash(python -c \"import openpyxl; print\\('openpyxl OK'\\)\")",
       "Bash(python -c \"import docx; print\\('python-docx OK'\\)\")",
       "Bash(npx tsc *)",
-      "Bash(.venv/Scripts/python.exe _bmad/scripts/resolve_customization.py --skill .claude/skills/bmad-quick-dev --key workflow)"
+      "Bash(.venv/Scripts/python.exe _bmad/scripts/resolve_customization.py --skill .claude/skills/bmad-quick-dev --key workflow)",
+      "mcp__zai-mcp-server__analyze_image",
+      "Bash(git add *)",
+      "Bash(git commit -m 'fix: delete all old FR→EN glossaries and deduplicate multilingual ones *)"
     ]
   }
 }
diff --git a/alembic/versions/d0e1f2a3b4c5_cleanup_duplicate_glossaries.py b/alembic/versions/d0e1f2a3b4c5_cleanup_duplicate_glossaries.py
new file mode 100644
index 0000000..e627ab6
--- /dev/null
+++ b/alembic/versions/d0e1f2a3b4c5_cleanup_duplicate_glossaries.py
@@ -0,0 +1,57 @@
+"""Delete old FR→EN glossaries and deduplicate multilingual ones
+
+Revision ID: d0e1f2a3b4c5
+Revises: c8d9e0f1a2b3
+Create Date: 2026-05-31
+
+Users imported templates multiple times creating duplicates. Also old
+FR→EN glossaries (before multilingual enrichment) are still present.
+This migration cleans everything up.
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+
+# revision identifiers
+revision = "d0e1f2a3b4c5"
+down_revision = "c8d9e0f1a2b3"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # Step 1: Delete ALL glossaries with target_language='en' (old stale imports)
+    op.execute("DELETE FROM glossary_terms WHERE glossary_id IN (SELECT id FROM glossaries WHERE target_language = 'en')")
+    op.execute("DELETE FROM glossaries WHERE target_language = 'en'")
+
+    # Step 2: Deduplicate multilingual glossaries — keep only the newest per name
+    # Delete terms for duplicates first, then the duplicates themselves
+    op.execute("""
+        DELETE FROM glossary_terms
+        WHERE glossary_id IN (
+            SELECT g.id
+            FROM glossaries g
+            WHERE g.target_language = 'multi'
+              AND g.id NOT IN (
+                SELECT DISTINCT ON (g2.name) g2.id
+                FROM glossaries g2
+                WHERE g2.target_language = 'multi'
+                ORDER BY g2.name, g2.created_at DESC
+              )
+        )
+    """)
+    op.execute("""
+        DELETE FROM glossaries
+        WHERE target_language = 'multi'
+          AND id NOT IN (
+            SELECT DISTINCT ON (g2.name) g2.id
+            FROM glossaries g2
+            WHERE g2.target_language = 'multi'
+            ORDER BY g2.name, g2.created_at DESC
+          )
+    """)
+
+
+def downgrade() -> None:
+    pass  # Cannot restore deleted data