Prevent duplicate Paperclip projects: check existing before creating

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

web/paperclip_client.py

@@ -42,23 +42,39 @@ async def create_project(
     appeal_type: str = "רישוי",
     color: str = "#6366f1",
 ) -> dict:
-    """Create a project in the Paperclip embedded DB."""
+    """Create a project in the Paperclip embedded DB, or return existing one."""
     company_id = _get_company_id(appeal_type)
-    project_id = str(uuid.uuid4())
+    prefix = "CMP" if _get_company_id(appeal_type) == COMPANIES["licensing"] else "CMPA"
 
     conn = await asyncpg.connect(PAPERCLIP_DB_URL)
     try:
+        # Check for existing project with this case number
+        existing = await conn.fetchrow(
+            "SELECT id, name FROM projects WHERE name LIKE $1 AND company_id = $2::uuid",
+            f"%{case_number}%", company_id,
+        )
+        if existing:
+            return {
+                "id": str(existing["id"]),
+                "company_id": company_id,
+                "name": existing["name"],
+                "url": f"https://pc.nautilus.marcusgroup.org/{prefix}/projects/{existing['id']}/issues",
+                "existing": True,
+            }
+
+        project_id = str(uuid.uuid4())
+        project_name = f"ערר {case_number} — {title}"[:200]
         await conn.execute(
             """INSERT INTO projects (id, company_id, name, description, status, color)
-               VALUES ($1, $2::uuid, $3, $4, 'backlog', $5)
-               ON CONFLICT DO NOTHING""",
-            project_id, company_id, f"ערר {case_number} — {title}"[:200], description[:500] if description else "", color,
+               VALUES ($1, $2::uuid, $3, $4, 'backlog', $5)""",
+            project_id, company_id, project_name, description[:500] if description else "", color,
         )
         return {
             "id": project_id,
             "company_id": company_id,
-            "name": f"ערר {case_number} — {title}",
-            "url": f"https://pc.nautilus.marcusgroup.org/{'CMP' if 'licensing' in appeal_type or appeal_type == 'רישוי' else 'CMPA'}/projects/{project_id}/issues",
+            "name": project_name,
+            "url": f"https://pc.nautilus.marcusgroup.org/{prefix}/projects/{project_id}/issues",
+            "existing": False,
         }
     finally:
         await conn.close()