fix(permissions): validate network access flow

crates/infrastructure/src/assistant/mod.rs

@@ -314,7 +314,11 @@ impl StructuredSessionEnvironmentPreparer for TicketAssistantEnvironmentPreparer
             .await?;
         self.materialise_mcp(project, profile, &spec.cwd, requester, &mut env)
             .await?;
-        Ok(StructuredSessionEnvironment { cwd: spec.cwd, env })
+        Ok(StructuredSessionEnvironment {
+            cwd: spec.cwd,
+            env,
+            structured_policy: None,
+        })
     }
 }