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/pages/run/RunDetailPage.tsx

@@ -1,5 +1,5 @@
 import { useEffect, useRef, useState } from 'react';
-import { useNavigate, useParams } from 'react-router-dom';
+import { useNavigate, useParams, Link } from 'react-router-dom';
 import { useTranslation } from 'react-i18next';
 import { runs } from '../../api';
 import type {
@@ -324,6 +324,14 @@ export function RunDetailPage() {
                 },
                 { term: t('runs.field_created'), detail: <Timestamp value={run.createdAt} /> },
                 { term: t('runs.field_updated'), detail: <Timestamp value={run.updatedAt} /> },
+                ...(run.environment ? [{
+                  term: 'Environment',
+                  detail: <span style={{ color: 'var(--color-link)', cursor: 'pointer' }}>{run.environment.name}</span>,
+                }] : []),
+                ...(run.session ? [{
+                  term: 'Session',
+                  detail: <Link to={`/sessions/${run.session.id}`} style={{ color: 'var(--color-link)' }}>{run.session.sessionName}</Link>,
+                }] : []),
               ]}
             />
           </Card>