Add authentication system with login, password reset, and member area

server/data/members.json

@@ -0,0 +1,12 @@
+[
+  {
+    "id": "1",
+    "name": "Admin",
+    "email": "admin@harheimertc.de",
+    "phone": "069-12345678",
+    "role": "admin",
+    "memberSince": "2020-01-01",
+    "active": true
+  }
+]
+

server/data/sessions.json

@@ -0,0 +1,2 @@
+[]
+

server/data/users.json

@@ -0,0 +1,13 @@
+[
+  {
+    "id": "1",
+    "email": "admin@harheimertc.de",
+    "password": "$2a$10$rKqW8x3k5vJ8pZ7mN9qL1OXxYzQ2wF3bH4cT6nR8sV9kL0mP1qW2e",
+    "name": "Admin",
+    "role": "admin",
+    "phone": "",
+    "created": "2025-10-21T00:00:00.000Z",
+    "lastLogin": null
+  }
+]
+