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/services/seed.py

@@ -0,0 +1,23 @@
+from sqlalchemy.orm import Session
+
+from app.models.user import Subject
+
+DEFAULT_SUBJECTS = [
+    "语文",
+    "数学",
+    "英语",
+    "物理",
+    "化学",
+    "生物",
+    "历史",
+    "地理",
+    "政治",
+]
+
+
+def seed_subjects(db: Session) -> None:
+    existing = {s.name for s in db.query(Subject).all()}
+    for name in DEFAULT_SUBJECTS:
+        if name not in existing:
+            db.add(Subject(name=name))
+    db.commit()