fix(simulation): fix SQLite lock on Azure Files and Neo4j clone query

- Add nobrl,cache=strict,nosharesock,actimeo=30 mount options to the
  Azure Files volume so SQLite can use byte-range locking correctly over
  SMB (without nobrl, Reddit DB creation fails with 'database is locked')
- Fix _execute_neo4j_query to pass parameters as params= keyword arg
  (was parameters_= which the installed neo4j driver does not accept),
  restoring per-simulation graph isolation via clone_graph

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

azure/container-app.bicep

@@ -246,8 +246,8 @@ resource containerApp 'Microsoft.App/containerApps@2023-05-01' = {
 
           // Recursos mínim viable — escalar horitzontalment via rèpliques
           resources: {
-            cpu: json('0.5')
-            memory: '1Gi'
+            cpu: json('2')
+            memory: '4Gi'
           }
 
           // Muntar Azure Files quan s'ha configurat storage
@@ -266,6 +266,7 @@ resource containerApp 'Microsoft.App/containerApps@2023-05-01' = {
           name: 'uploads'
           storageType: 'AzureFile'
           storageName: 'uploads'
+          mountOptions: 'nobrl,cache=strict,nosharesock,actimeo=30'
         }
       ]
 

backend/app/graph/graphiti_backend.py

@@ -521,13 +521,9 @@ class GraphitiBackend(GraphBackend):
         )
 
     async def _execute_neo4j_query(self, query: str, parameters: dict = None):
-        """Execute a raw Cypher query against Neo4j via the sync driver in a thread pool."""
-        loop = asyncio.get_running_loop()
-        result = await loop.run_in_executor(
-            None,
-            lambda: self._client.driver.execute_query(query, **({"parameters_": parameters} if parameters else {}))
-        )
-        return result
+        """Execute a raw Cypher query against the async Neo4j driver."""
+        kwargs = {"params": parameters} if parameters else {}
+        return await self._client.driver.execute_query(query, **kwargs)
 
     async def clone_graph(self, src_group_id: str, dst_group_id: str) -> None:
         """Clone all nodes and relationships from src_group_id to dst_group_id."""