Initial commit: KPI Management System Backend

Features:
- FastAPI backend with JWT authentication
- MySQL database with SQLAlchemy ORM
- KPI workflow: draft → pending → approved → evaluation → completed
- Ollama LLM API integration for AI features
- Gitea API integration for version control
- Complete API endpoints for KPI, dashboard, notifications

Tables: KPI_D_* prefix naming convention

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/services/__init__.py

@@ -0,0 +1,12 @@
+"""
+Business Logic Services
+"""
+from app.services.kpi_service import KPISheetService
+from app.services.notify_service import NotifyService
+from app.services.dashboard_service import DashboardService
+
+__all__ = [
+    "KPISheetService",
+    "NotifyService",
+    "DashboardService",
+]