feat(phase-35): Jira + Tempo integration with internal worklogs

Full Jira/Tempo pipeline: link Aegis entities to Jira issues, auto-sync
status hourly, log time internally with integrity hashing, and optionally
push worklogs to Tempo.

- 1.1 JiraLink model + Worklog model: Alembic migration b020 with indexes,
  enums (jiralinkentitytype, jirasyncdirection), and integrity_hash column
- 1.2 Jira service: atlassian-python-api wrapper with lazy singleton client,
  search/create/sync operations, feature-flagged via JIRA_ENABLED
- 1.3 Jira router: CRUD endpoints for /jira/links, /jira/search,
  /jira/create-issue with audit logging and entity-to-issue auto-creation
- 1.4 Tempo service: worklog push via tempo-api-python-client, auto-log from
  test completions when TEMPO_ENABLED, graceful fallback on failure
- 1.5 Worklog service + router: immutable internal time records with SHA-256
  integrity hash, CRUD at /worklogs, /worklogs/{id}/verify endpoint
- 1.6 Frontend: JiraLinkPanel component (search, link, sync, unlink) and
  WorklogTimeline component (timeline view, manual log form) integrated into
  TestDetailPage sidebar, CampaignDetailPage grid, TechniqueDetailPage
- 1.7 Jira sync job: APScheduler hourly job syncs all links from Jira,
  registered in background scheduler alongside existing jobs

backend/app/main.py

@@ -32,6 +32,8 @@ from app.routers import scores as scores_router
 from app.routers import operational_metrics as operational_metrics_router
 from app.routers import compliance as compliance_router
 from app.routers import snapshots as snapshots_router
+from app.routers import jira as jira_router
+from app.routers import worklogs as worklogs_router
 from app.domain.exceptions import DomainException
 from app.middleware.error_handler import domain_exception_handler
 from app.storage import ensure_bucket_exists
@@ -110,6 +112,8 @@ app.include_router(scores_router.router, prefix="/api/v1")
 app.include_router(operational_metrics_router.router, prefix="/api/v1")
 app.include_router(compliance_router.router, prefix="/api/v1")
 app.include_router(snapshots_router.router, prefix="/api/v1")
+app.include_router(jira_router.router, prefix="/api/v1")
+app.include_router(worklogs_router.router, prefix="/api/v1")
 
 
 @app.get("/health", include_in_schema=False)