* fix(qa): ISSUE-001 — misleading empty state message in ScreeningPanel
When API returns 0 results, show '未找到符合条件的股票' instead of
'请先选择筛选模式并刷新' which implied no filtering had been done.
Issue found by /qa on main branch
* feat(web-dashboard): connect frontend to real backend API
Phase 1: Stabilize dashboard by connecting mock data to real backend.
Backend:
- Add GET /api/analysis/tasks endpoint for BatchManager
- Fix subprocess cancellation (poll() → returncode)
- Use sys.executable instead of hardcoded env312 path
- Move API key validation before storing task state (no phantom tasks)
Frontend:
- ScreeningPanel: handleStartAnalysis calls POST /api/analysis/start
- AnalysisMonitor: real WebSocket connection via useSearchParams + useRef
- BatchManager: polls GET /api/analysis/tasks, fixed retry button
- All mock data removed
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Shaojie