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/migrate.py

@@ -0,0 +1,20 @@
+from sqlalchemy import inspect, text
+
+from app.core.database import engine
+
+
+def run_migrations() -> None:
+    """Apply lightweight schema updates for existing databases."""
+    inspector = inspect(engine)
+    if "students" not in inspector.get_table_names():
+        return
+
+    columns = {col["name"] for col in inspector.get_columns("students")}
+    if "school_level" not in columns:
+        with engine.begin() as conn:
+            conn.execute(
+                text(
+                    "ALTER TABLE students ADD COLUMN school_level VARCHAR(32) "
+                    "NOT NULL DEFAULT 'junior_high'"
+                )
+            )