Initial commit: Tianpu Zero-Carbon EMS Platform

Full-stack energy management system for Tianpu Daxing campus.
- Frontend: React 19 + TypeScript + Ant Design + ECharts
- Backend: FastAPI + SQLAlchemy + PostgreSQL/TimescaleDB
- Features: PV monitoring, heat pump management, carbon tracking, alarms, reports

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend/app/core/config.py

@@ -0,0 +1,27 @@
+from pydantic_settings import BaseSettings
+from functools import lru_cache
+import os
+
+
+class Settings(BaseSettings):
+    APP_NAME: str = "TianpuEMS"
+    DEBUG: bool = True
+    API_V1_PREFIX: str = "/api/v1"
+
+    DATABASE_URL: str = "sqlite+aiosqlite:///./tianpu_ems.db"
+    DATABASE_URL_LOCAL: str = ""
+    DATABASE_URL_SYNC: str = "sqlite:///./tianpu_ems.db"
+    REDIS_URL: str = "redis://localhost:6379/0"
+
+    SECRET_KEY: str = "tianpu-ems-secret-key-change-in-production-2026"
+    ALGORITHM: str = "HS256"
+    ACCESS_TOKEN_EXPIRE_MINUTES: int = 480
+
+    class Config:
+        env_file = ".env"
+        extra = "ignore"
+
+
+@lru_cache
+def get_settings() -> Settings:
+    return Settings()