Initial commit: secondary school grade archive system.

Add FastAPI/React app with Docker deployment, Ubuntu one-click install, and docs for junior/senior high score tracking and mistake bank.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/core/config.py

@@ -0,0 +1,21 @@
+from pydantic_settings import BaseSettings
+
+
+class Settings(BaseSettings):
+    DATABASE_URL: str = "postgresql://postgres:postgres@localhost:5432/student_archive"
+    SECRET_KEY: str = "change-me-in-production-use-a-long-random-string"
+    ACCESS_TOKEN_EXPIRE_MINUTES: int = 60 * 24
+    REFRESH_TOKEN_EXPIRE_DAYS: int = 7
+    ALGORITHM: str = "HS256"
+    UPLOAD_DIR: str = "uploads"
+    MAX_UPLOAD_SIZE: int = 10 * 1024 * 1024
+    OLLAMA_BASE_URL: str = "http://host.docker.internal:11434"
+    OLLAMA_MODEL: str = "qwen2.5:7b"
+    FLUCTUATION_THRESHOLD: float = 0.08
+    CORS_ORIGINS: str = "http://localhost:5173,http://localhost:3000,http://localhost"
+
+    class Config:
+        env_file = ".env"
+
+
+settings = Settings()