Added make reset-demo

Makefile

@@ -1,5 +1,7 @@
 .PHONY: help build migrate migrate-create start dev stop logs clean test lint format check-db reset-db shell
 
+PYTHON ?= backend/.venv/bin/python
+
 # Default target
 help: ## Show this help message
 	@echo "Available commands:"
@@ -53,6 +55,13 @@ reset-db: ## Reset database (remove and recreate)
 		echo "❌ Database reset cancelled."; \
 	fi
 
+reset-demo: ## Очистить демонстрационные данные (миссии, журнал, вложения)
+	@if [ ! -x "$(PYTHON)" ]; then \
+		echo "❌ Backend venv не найден. Выполните 'cd backend && python -m venv .venv && source .venv/bin/activate && pip install -r requirements-dev.txt'"; \
+		exit 1; \
+	fi
+	PYTHONPATH=$(PWD) $(PYTHON) -m scripts.reset_demo_data
+
 # Development commands
 start: migrate ## Run migrations and start all services
 	docker compose up -d

scripts/reset_demo_data.py

@@ -6,6 +6,7 @@ import shutil
 
 from pathlib import Path
 import sys
+import os
 
 from sqlalchemy.orm import Session
 
@@ -24,7 +25,12 @@ from app.models.user import User
 def reset() -> None:
     """Очищаем пользовательскую активность и загруженные документы."""
 
-    run_migrations()
+    original_cwd = Path.cwd()
+    try:
+        os.chdir(ROOT / 'backend')
+        run_migrations()
+    finally:
+        os.chdir(original_cwd)
 
     session: Session = SessionLocal()
     try: