refactor: add session and environment relationships to scenario run

- add sessionId optional column to ScenarioRunEntity
- add ManyToOne relationship to EnvironmentEntity (with eager loading)
- add ManyToOne relationship to SessionEntity (optional)
- update ScenarioRun client types to include session and environment data
- add environment name and session link to RunDetailPage
- update UI to display save session, environment, and session info

client/src/api/types.ts

@@ -98,8 +98,11 @@ export interface ScenarioRun {
   id: string;
   scenarioId: string;
   environmentId: string;
+  sessionId?: string | null;
   saveSession: boolean;
   scenario?: Pick<Scenario, 'id' | 'name'>;
+  environment?: Pick<Environment, 'id' | 'name'>;
+  session?: { id: string; sessionName: string };
   status: ScenarioRunStatus;
   stepRuns?: ScenarioRunStep[];
   createdAt: string;