Fix syntax errors in MapView.vue and improve backend production robustness (CORS, DB URL, auto-migrations, and seeding)

backend/app/core/config.py

@@ -42,5 +42,12 @@ class Settings(BaseSettings):
     )
 
 
-# Global settings instance
+    # Global settings instance
+    @property
+    def get_database_url(self) -> str:
+        url = self.database_url
+        if url.startswith("postgres://"):
+            url = url.replace("postgres://", "postgresql://", 1)
+        return url
+
 settings = Settings()

backend/app/core/database.py

@@ -8,7 +8,12 @@ from app.core.config import settings
 
 # Create database engine
 # Convert asyncpg URL to psycopg2 for synchronous operations
-database_url = settings.database_url.replace("+asyncpg", "+psycopg2")
+database_url = settings.get_database_url
+if "+asyncpg" in database_url:
+    database_url = database_url.replace("+asyncpg", "+psycopg2")
+elif "postgresql://" in database_url and "+psycopg2" not in database_url:
+    database_url = database_url.replace("postgresql://", "postgresql+psycopg2://")
+
 engine = create_engine(
     database_url,
     echo=settings.debug,