v2.0.0: Multi-user authentication with JWT

Features:
- User registration and login with JWT tokens
- All data is now user-specific (multi-tenancy)
- Profile page with integrations and logout
- Automatic migration of existing data to first user

Backend changes:
- Added users and refresh_tokens tables
- Added user_id to all data tables (projects, entries, nodes, dictionaries, words, progress, configs, telegram_integrations, weekly_goals)
- JWT authentication middleware
- claimOrphanedData() for data migration

Frontend changes:
- AuthContext for state management
- Login/Register forms
- Profile page (replaced Integrations)
- All API calls use authFetch with Bearer token

Migration notes:
- On first deploy, backend automatically adds user_id columns
- First user to login claims all existing data

play-life-web/src/components/TestConfigSelection.jsx

@@ -1,9 +1,11 @@
 import React, { useState, useEffect, useRef } from 'react'
+import { useAuth } from './auth/AuthContext'
 import './TestConfigSelection.css'
 
 const API_URL = '/api'
 
 function TestConfigSelection({ onNavigate, refreshTrigger = 0 }) {
+  const { authFetch } = useAuth()
   const [configs, setConfigs] = useState([])
   const [dictionaries, setDictionaries] = useState([])
   const [loading, setLoading] = useState(true)
@@ -38,7 +40,7 @@ function TestConfigSelection({ onNavigate, refreshTrigger = 0 }) {
         setLoading(true)
       }
       
-      const response = await fetch(`${API_URL}/test-configs-and-dictionaries`)
+      const response = await authFetch(`${API_URL}/test-configs-and-dictionaries`)
       if (!response.ok) {
         throw new Error('Ошибка при загрузке конфигураций и словарей')
       }
@@ -92,7 +94,7 @@ function TestConfigSelection({ onNavigate, refreshTrigger = 0 }) {
     if (!selectedDictionary) return
 
     try {
-      const response = await fetch(`${API_URL}/dictionaries/${selectedDictionary.id}`, {
+      const response = await authFetch(`${API_URL}/dictionaries/${selectedDictionary.id}`, {
         method: 'DELETE',
         headers: {
           'Content-Type': 'application/json',
@@ -119,7 +121,7 @@ function TestConfigSelection({ onNavigate, refreshTrigger = 0 }) {
     if (!selectedConfig) return
 
     try {
-      const response = await fetch(`${API_URL}/configs/${selectedConfig.id}`, {
+      const response = await authFetch(`${API_URL}/configs/${selectedConfig.id}`, {
         method: 'DELETE',
         headers: {
           'Content-Type': 'application/json',