feat(reject-history): fix Pareto datasources, multi-select filtering, and UX enhancements

- Fix dimension Pareto datasources: PJ_TYPE/PRODUCTLINENAME from DW_MES_CONTAINER,
  WORKFLOWNAME from DW_MES_LOTWIPHISTORY via WIPTRACKINGGROUPKEYID, EQUIPMENTNAME
  from LOTREJECTHISTORY only (no WIP fallback), workcenter dimension uses WORKCENTER_GROUP
- Add multi-select Pareto click filtering with chip display and detail list integration
- Add TOP 20 display scope selector for TYPE/WORKFLOW/機台 dimensions
- Pass Pareto selection (dimension + values) through to list/export endpoints
- Enable TRACE_WORKER_ENABLED=true by default in start_server.sh and .env.example
- Archive reject-history-pareto-datasource-fix and reject-history-pareto-ux-enhancements
- Update reject-history-api and reject-history-page specs with new Pareto behaviors

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

.env.example

@@ -197,7 +197,7 @@ EVENT_FETCHER_CACHE_SKIP_CID_THRESHOLD=10000
 # --- Async Job Queue (提案 2: trace-async-job-queue) ---
 # Enable RQ trace worker for async large query processing
 # Set to true and start the worker: rq worker trace-events
-TRACE_WORKER_ENABLED=false
+TRACE_WORKER_ENABLED=true
 
 # CID threshold for automatic async job routing (requires RQ worker).
 # Requests with CID count > threshold are queued instead of processed synchronously.